GOST R ISO 7523-2016
GOST R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization
GOST R ISO 7523−2016
NATIONAL STANDARD OF THE RUSSIAN FEDERATION
NICKEL
Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization
Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents. Electrothermal atomic absorption spectrometric method
OKS 77.120.40*
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* According to the official website of Rosstandart
OKS 77.080.20, here and hereafter. -
Note the manufacturer’s database.
Date of introduction 2016−11−01
Preface
1 PREPARED by the Federal state unitary enterprise «Central research Institute of ferrous metallurgy them.And.P.Bardin," on the basis of their own translations into Russian language the English language version of the standard specified in paragraph 4
2 SUBMITTED by the Technical Committee for standardization TC 145 «monitoring Methods of steel products»
3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology dated 3 March 2016 N 114 St
4 this standard is identical to international standard ISO 7523:1985* «Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization» (ISO 7523:1985 «Nickel — Determination of silver, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium contents — Electrothermal atomic absorption spectrometric method», IDT).
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* Access to international and foreign documents referred to here and hereinafter, can be obtained by clicking on the link to the site shop.cntd.ru. — Note the manufacturer’s database.
In applying this standard it is recommended to use instead of the referenced international standards corresponding national and international standards, details of which are given in Appendix YES
5 INTRODUCED FOR THE FIRST TIME
Application rules of this standard are established in GOST R 1.0−2012 (section 8). Information about the changes to this standard is published in the annual (as of January 1 of the current year) reference index «National standards» and the official text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the upcoming issue of the monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet (www.gost.ru)
1 Scope
This standard establishes the atomic absorption with electrothermal atomization spectrometric (AAS) method for the determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium in high-purity, refined, wrought and cast Nickel within the ranges presented in table 1. The method is applicable to an independent determination of any (one or more items listed) without determining all the elements present in the standard solutions.
Table 1 — Ranges of the contents of the designated elements
Item
The ranges of contents*, (µg/g)**
Ag — silver
From 0.1 to 10
As — arsenic
From 1 to 20
Bi — bismuth
From 0.5 to 15
Cd — cadmium
From 0.1 to 2
Pb — lead
From 0.1 to 10
Sb — antimony
From 1 to 10
Se — selenium
From 1 to 10
Sn — tin
From 1 to 5
Te — tellurium
From 0.2 to 10
Tl — thallium
From 0.5 to 10
* Other ranges of impurity contents given in standard ISO 6283.
** 1 µg/g=1 g/t.
A note About the possible effects and cautions, refer to section 9.
2 Normative references
The present standard features references to the following standards*:
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* The table of conformity of national standards international see the link. — Note the manufacturer’s database.
ISO 385−1, Laboratory glassware — Burettes — Part 1: General requirements (laboratory Glassware glass. Burette. Part 1. General requirements)
ISO 648, Laboratory glassware — One-mark pipettes (laboratory Glassware glass. Pipette with one mark)
ISO 1042, Laboratory glassware — One-mark volumetric flasks (laboratory Glassware glass. Volumetric flasks one mark)
ISO 5725, Precision of test methods — Determination of repeatability and reproducibility by inter-laboratory tests (Precision of test methods. Determination of repeatability and reproducibility of the method by interlaboratory trials)
3 the essence of the method
This method is based on dissolving the sample the investigated sample in nitric acid, diluted to the desired volume and the introduction of a certain volume of solution in electrothermal atomizer atomic absorption spectrometer with subsequent measurement of the values of absorption of resonance radiation emitted by the lamp with hollow cathode, the free atoms of each element.
The obtained value of absorption compared with the absorption values of the calibration solutions of the element prepared on the background of the selected matrix of Nickel. The absorbance measured, using a background corrector.
4 Reagents
In the analysis, unless otherwise specified, use reagents of known analytical grade and only deionized water or water of equivalent purity.
4.1 Nitric acid (HNOГОСТ R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization), GOST R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal атомизацией1,41 g/smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization
In all analysis procedures should be used the same batch of nitric acid.
Note — If necessary, if you get the high value of blank the experience as nitric acid, purified by additional distillation.
4.2 Nitric acid (HNOГОСТ R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization), GOST R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal атомизацией1,41 g/smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, dilute 1:19
In all analysis procedures should be used the same batch of nitric acid.
4.3 Mixed analyte standard solutions
4.3.1 standard solutions of the analyte corresponding to the content 1 g/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization Ag, As, Bi, Cd, Pb, Sb, Se, Sn, Te, Tl
The solution is prepared individually for each metal.
4.3.1.1 Weighed 0,100 g, weighed with accuracy to 0.0001 g, each of high-purity metals [not less than 99.9% (mass.)] — silver, arsenic, bismuth, cadmium, lead, selenium and tellurium is placed in a beaker with a capacity of 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization and dissolved in 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid diluted 1:1. Was heated until complete dissolution of the sample, boil gently to remove oxides of nitrogen, cool and quantitatively transfer the solution into a volumetric flask with a capacity of 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization containing 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid diluted 1:1. Bring to mark with water and mix.
The solutions were stored in glass vessels.
4.3.1.2 Antimony
The exact linkage, 0,274 g of semi-aquatic animeillustrated potassium [K (SbO)SHOST R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomizations R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization·½НГОСТ R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal, atomization] is placed in a volumetric flask with one mark capacity 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, is dissolved in water, adjusted to the mark with water and mix. This solution is prepared before use, because pre-cooked solutions formed mold. More dilute acidified solutions are stable.
4.3.1.3 Thallium
The exact linkage, 0,112 g of oxide of thallium (III), TlГОСТ R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, is placed in a beaker with a capacity of 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization and dissolved in 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of hot nitric acid (4.1). The solution was transferred into volumetric flask with one mark capacity 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, adjusted to the mark with water and mix, store in a glass jar.
4.3.1.4 Tin
A portion 0,250 g, weighed with accuracy to 0.001 g, high purity [not less than 99.9% (mass.)] tin metal is placed in a plastic beaker with a capacity of 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization and dissolved in 7.5 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of the mixture, prepared in equal volume parts of a 48% (wt.) hydrofluoric acid (GOST R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal атомизацией1,13 g/smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization), nitric acid (4.1) and water. Was heated until complete dissolution of the sample, boil gently to remove oxides of nitrogen, cool the solution and quantitatively transfer it into a plastic volumetric flask with a capacity of 250 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization. Bring to mark with water and mix.
Solution store in a plastic container.
4.3.2 Mixed analyte standard solution A containing 1.0 mg/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization As, Bi, Pb, Sb, Se, Sn, Te, Tl
4.3.2.1 Pipette take 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization each of the standard solution (4.3.1.1) containing 1,000 g/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization As, Bi, Pb, Sb, Se, Sn, Te, Tl in volumetric flask with one mark capacity 1000 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization containing 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid diluted 1:1. Bring to mark with water and mix.
Solution store in a glass jar (5.6).
4.3.2.2 pipetted 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of the solution (4.3.2.1) volumetric flask with one mark capacity 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization containing 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid diluted 1:1. Bring to mark with water and mix.
Solution store in a glass jar (5.6).
4.3.3 Mixed analyte standard solution containing 0.1 mg/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of Ag and Cd
4.3.3.1 Pipette take 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of a standard solution (4.3.1.1) volumetric flask with one mark capacity 1000 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization containing 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid diluted 1:1. Bring to mark with water and mix.
Solution store in a glass jar (5.6).
4.3.3.2 Pipette take 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of a standard solution (4.3.3.1) volumetric flask with one mark capacity 1000 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization containing 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid diluted 1:1. Bring to mark with water and mix.
This solution is not stable and should be prepared immediately before use.
4.4 Nickel nitrate, primary standard solution, 40 g/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization Nickel
4.4.1 Suspension, 4.00 g, high-purity Nickel metal (containing less than 5 ppm iron and less than 1 g/t of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium), weighed with accuracy to 0.0001 g, placed in a beaker with a capacity of 400 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization. Add 50 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of water and 28 simhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid (4.1), set aside, not stirring the contents of the Cup until, while most of the metal dissolved as the reaction proceeds very rapidly. Was heated until complete dissolution of the sample, boil gently to remove oxides of nitrogen, and cooled.
4.4.2 Filter the solution through a dense filter paper, previously washed with nitric acid diluted 1:1. The filtrate is again passed through a filter for collecting fine carbon particles, which usually fall into the first filtrate. The second filtrate is collected in the volumetric flask with one mark capacity 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, the filter washed with water. Bring to the mark with water and mix the solution. The solution contains approximately 0.8 mol/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization free HNOГОСТ R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization [5% vol.].
Note — Details concerning alternative method of preparation and purification of the solution, see Appendix A.
5 Instrument
Use conventional laboratory equipment and the following equipment.
5.1 Atomic absorption spectrometer with THIS
5.1.1 Atomic absorption spectrometer used in this method must be equipped with a background corrector and high-speed recorder or a computer reader.
5.1.2 Spectrometer needs to be adapted to the use of single-element lamps hollow cathode or electrodeless discharge lamps operating at currents recommended by the manufacturer of lamps and equipment.
5.2 Burette volume of 5 and 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, graduated with divisions of 0.01 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization in accordance with ISO 385.1, class A.
5.3 Pipettes of 10 and 25 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization in accordance with ISO 648, class A.
5.4 volumetric Flasks with a capacity of (10, 100, 200, 250 and 1000) smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization in accordance with ISO 1042, class A.
5.5 Pipettes with volume from 5 to 25 µl.
5.6 Glass vessels for storing.
Glass vessels for storage of standard solutions mixed analyte should be thoroughly cleaned, by aging for several days with nitric acid (4.2) and then thoroughly rinsed with water.
6 Sampling and samples for analysis
6.1 Sampling and preparation of laboratory samples must be carried out in accordance with normal established procedures. In the event of a dispute use the appropriate international standard.
6.2 common laboratory sample is prepared in the form of powder, granules, chips obtained by milling or drilling, in the quantity necessary to perform the analysis.
6.3 If milling or drilling in the laboratory the sample is contaminated with oil or grease, clean the sample by rinsing with high-purity acetone and air dry.
6.4 If the laboratory sample contains a significantly different size particles, the sample should be collected after pre-shredding of large particles.
7 analysis
7.1 Preparation of the test solution
A portion of the analytical sample in the range from 0.9 to 1.1 g accurate to 0.01 g, placed in a clean beaker with a capacity of 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization. Add 30 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of water, 12 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid (4.1) wait out a violent reaction. Then heated until complete dissolution of the sample, boil gently to remove oxides of nitrogen, then cooled the solution and quantitatively transferred into volumetric flask with one mark capacity 100 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, adjusted to the mark with water and mix.
Note — the lifetime of the graphite tube can be increased, using to dissolve the sample is not 12 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, and 5 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of nitric acid.
7.2 Blank
As the blank experience is a null-solution in series of the calibration solutions (7.3), prepared using the same batch of nitric acid, which was used for the preparation of a standard solution of Nickel and solutions of analyzed samples. If it is not possible to use nitric acid from the same batch, it is necessary to prepare a second solution for a single experience, using the same quantities of high-purity Nickel metal. This solution blanks experience is compared with the zero solution and, if necessary, introduce necessary amendments.
7.3 Preparation of calibration solutions
7.3.1 Series solutions And
7.3.1.1 This series of solutions corresponds to the content (0; 0,005; 0,010; 0,05; 0,07; 0,1; 0,15; 0,25 and of 0.30) mg/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of each of the elements: As, Bi, Pb, Sb, Se, Sn, Te and Tl (table 2) and used at levels of analyte in the product of 0.5 to 30.0 g/ton. All the solutions were prepared in a background matrix of Nickel with a Nickel content of 10 g/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization.
Table 2 — Series calibration solutions And
The volume of the mixed analyte, smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization. Standard solution A (4.3.2)
The concentration of analyte, mg/dbhost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization
As, Bi, Pb, Sb, Se, Sn, Te, Tl
0
0 (zero solution)
0,05
0,005
0,1
0,010
0,2
0,02
0,5
0,05
0,7
0,07
1,0
0,1
1,5
0,15
2,0
0,20
2,5
0,25
3,0
0,30
7.3.1.2 11 volumetric flasks with one mark capacity 10 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of the burette contribute 2.50 smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization of the basic solution of Nickel nitrate (4.4). Then in the flask add from burette appropriate volumes of mixed-analyte (0; 0,05; 0,1; 0,2; 0,5; 0,7; 1,0; 1,5; 2,0; 2,5; 3,0) smost R ISO 7523−2016 Nickel. Determination of silver, arsenic, bismuth, cadmium, lead, antimony, selenium, tin, tellurium and thallium. Spectrometric method of atomic absorption with electrothermal atomization, standard solution And (4.4.2) are presented in table 2. Bring to mark with nitric acid (4.2) diluted (1:19) and stirred.
