GOST 22519.0-77
GOST 22519.0−77 Thallium. General requirements for methods of analysis (with Amendments No. 1, 2, 3)
GOST 22519.0−77
Group B59
STATE STANDARD OF THE USSR
THALLIUM
General requirements for methods of analysis
THALLIUM. General requirements for the methods of analysis
AXTU 1709
Date of introduction 1978−01−01
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of nonferrous metallurgy of the USSR
DEVELOPERS
A. P. Sychev, M. G. Sun, V. I. Lysenko, I. A. Romanenko, V. A. Kolesnikov
2. APPROVED AND promulgated by the Decree of the State Committee of standards of the USSR Council of Ministers
Change No. 3 adopted by the Interstate Council for standardization, Metrology and certification (Protocol No. 4 dated 21.10.93)
The adoption voted:
| The name of the state |
The name of the national authority for standardization |
| The Republic Of Armenia |
Armastajad |
| The Republic Of Belarus |
Gosstandart Of Belarus |
| The Republic Of Kazakhstan |
Gosstandart Of The Republic Of Kazakhstan |
| The Republic Of Moldova |
Moldovastandart |
| Russian Federation |
Gosstandart Of Russia |
| The Republic Of Turkmenistan |
The main state inspection of Turkmenistan |
| The Republic Of Uzbekistan |
Standards |
| Ukraine |
Gosstandart Of Ukraine |
3. INTRODUCED FOR THE FIRST TIME
4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS
| The designation of the reference document referenced |
Item number |
| GOST 3−88 |
11.15 |
| GOST 8.010−90* |
11.10 |
| GOST 8.001−80 |
11.9 |
| GOST 12.0.004−90 |
11.17 |
| GOST 12.0.005−84 |
11.10 |
| GOST 12.1.004−91 |
11.5.3, 11.12 |
| GOST 12.1.005−88 |
11.10 |
| GOST 12.2.003−91 |
11.6 |
| GOST |
11.9 |
| GOST 12.1.016−79 |
11.11 |
| GOST 12.1.019−79 |
11.9 |
| GOST 12.4.009−83 |
11.6 |
| GOST 12.4.011−89 |
11.15 |
| GOST 12.4.013−85 |
11.15 |
| GOST 12.4.021−75 |
11.6 |
| GOST 12.4.028−76 |
11.15 |
| GOST 12.4.131−83 |
11.15 |
| GOST 12.4.132−83 |
11.15 |
| GOST 20997.2−81, GOST 20997.5−81 |
12 |
| GOST 18337−80 |
13 |
| GOST 22519.1−77 — GOST 22519.7−77 |
12 |
| GOST 25086−87 |
Introduction, 12 |
| GOST 22306−77 |
Chapeau |
________________
* On the territory of the Russian Federation GOST R 8.563−96.
5. Limitation of actions taken on the Protocol, the Interstate Council for standardization, Metrology and certification (ICS 2−93)
6. REPRINT (February 1998) with Amendments No. 1, 2, 3, approved in January 1983, March 1987-June 1996 (IUS 5−83, 6−87, 9−96)
1. This standard establishes General requirements for methods of analysis of thallium (if the mass fraction of thallium 99,98-of 99.9995%).
2. General requirements for methods of analysis of thallium brands TL1 and TL0 — GOST 25086, brands Tl00, Tl000 — GOST 22306 with the additions specified in this standard.
(Changed edition, Rev. N 3).
3. The analysis of thallium with a mass fraction of thallium 99,98−99,99% is used bidistillated water and reagents qualification not lower than H. h., with a mass fraction of 99.999-of 99.9995% — bidistillated water and high purity reagents brand. In the absence of the latter allowed to use the reagent H. h. after additional purification from impurities determined. All reagents for the determination of silver must be checked for absence of chlorine.
4. When determining the mass fraction of impurities in thallium (with a mass fraction of thallium 99,98−99,99%) is allowed to apply a heat-resistant bowl, in the analysis of thallium (with a mass fraction of thallium 99,999-of 99.9995%) should apply utensils made of quartz glass or fluoroplastic — 4.
5. Determination of impurities in thallium is produced in two parallel batches with simultaneous carrying out two control experiments to make the results of the analysis of the relevant amendment for contamination of reagents.
6−9. (Deleted, Rev. N 3).
10. For the results analysis be the arithmetic mean of results of two parallel measurements.
The absolute values of the differences between the results of two parallel measurements (rate of convergence) and the results of the two tests (index of reproducibility) with confidence probability of 0.95 should not exceed the values permitted discrepancies listed in the relevant tables of standards.
(Changed edition, Rev. N 3).
11. Safety requirements.
(Added, Rev. N 1).
11.1. Aerosols of thallium and its compounds are highly toxic and are substances of the I class of danger. Maximum permissible concentration (MPC) of thallium (iodide, bromide) in the air of working zone 0.01 mg/m. Thallium and its compounds can enter the human body through respiratory organs, gastrointestinal tract and intact skin. Thallium and its compounds are striking in the Central and peripheral nervous system, gastrointestinal tract and kidneys.
11.2. In the analysis of thallium using the following reagents, with harmful effects on the human body: mercury, lead, cadmium, bromine, carbon tetrachloride, hydrazine dihydrochloride, barium chloride, salts of beryllium, dialogically ether, isobutylketone, hydrochloric, nitric, sulfuric, bromatologia, perchloric and acetic acid. When you work with them it is necessary to observe the basic rules of safe work in a chemical laboratory*.
________________
* On the territory of the Russian Federation the document is not valid. Acts PND f 12.13.1−03. — Note the manufacturer’s database.
11.1, 11.2. (Changed edition, Rev. N 3).
11.3. A sample of the metal thallium must be received at the analysis in armored plastic packaging with a label and stored in a plastic tray in a closed metal Cabinet. At the end of the analysis of the remains, samples of thallium are returned to the manufacturer.
(Added, Rev. N 1).
11.4. Chemicals must be stored in specially designated for each of the cabinets are equipped with ventilation, in closed containers, jars or other vessels. Each package of reagent must be label with the exact name of the substance and its characteristics. Poisonous substances must be stored in accordance with the provisional rules of storage of highly toxic substances.
(Changed edition, Rev. N 3).
11.5. When working with thallium, compounds and other chemical reagents necessary to observe security requirements outlined in the normative-technical documentation on their production and application.
11.5.1. All operations of grinding and weighing of the metal thallium must be conducted in boxes or cupboards with ventilation.
11.5.2. Used solutions and extractants thallium should be drained into separate collections.
11.5.3. Laboratory facilities in which to conduct analysis of samples of metallic thallium, belong to the category of industries with flammable fluids, and fire safety requirements they need to meet the requirements of GOST
11.6. Room chemical laboratory, its lighting, heating, water supply and Sewerage system must comply with the SN 245−71 and SNiP II-4−79**. Ventilation must comply with GOST
________________
* Resolution of the Chief state sanitary doctor of Russia from
** Replaced with SNiP 23−05−95. — Note the manufacturer’s database.
11.5−11.6. (Added, Rev. N 1).
11.7. In the analysis of thallium chemical laboratory should be provided with special premises and devices according to SNiP 2.09.04−87.
(Changed edition, Rev. N 3).
11.8. Not allowed to take write, store food, smoke in the room where the work is being carried out with thallium.
(Added, Rev. N 1).
11.9. All electrical installations and electrical equipment used in the tests shall meet the requirements of the rules for electrical installations approved by Glavgosenergonadzora, and GOST
Conditions electrical safety in workplaces must comply with GOST 12.1.019, rules of technical operation of installations of consumers and safety at operation of electroinstallations of consumers, approved by the Glavgosenergonadzora. All used devices must pass state tests in accordance with GOST 8.001*.
________________
* On the territory of the Russian Federation there are PR 50.2.009−94. — Note the manufacturer’s database.
(Changed edition, Rev. N 2, 3).
11.10. Control of content of harmful substances in the air of working zone shall conform to the requirements of GOST
Control of parameters of dangerous and harmful production factors is performed by methods of measurement, standardized and certified in accordance with the requirements of GOST 8.010*.
________________
* On the territory of the Russian Federation GOST R 8.563−96.
Basic provisions and requirements for the organization and carrying out of works on metrological support in the field of occupational safety — according to GOST
11.11. Analysis of air samples the concentration of thallium and other harmful substances in the working area should carry out according to the methods of determination of harmful substances in the air, developed in accordance with GOST 12.1.016 and approved by the Ministry of health.
11.10, 11.11. (Changed edition, Rev. N 3).
11.12. Thallium pozharovzryvobezopasnost — according to GOST
(Added, Rev. N 1).
11.13. The recycling and disposal of thallium compounds as follows. In a separating funnel with a capacity of 500 cmis placed not more than 250 cm
dihloretilaminovogo extract, 100 CC
5% sodium hydroxide solution, are added 1 g of sodium semitecolo and moderately shaken for 2 min. the Aqueous layer was separated in a beaker with a capacity of 600 cm
, neutralized with 10% solution of sulfuric acid to slightly acid reaction, poured a 5% solution of potassium permanganate up to its crimson colouring, add (per 1 g of thallium) 20 cm
10%strength solution of manganese sulfate and heated to 70−80 °C. Then pour 1 cm of
5% sodium hydroxide solution and continue to heat for 1 h. the Precipitate of hydroxides of manganese and thallium filtered on a paper filter (not washed). Similarly, thallium is isolated from the ammonium-ammonia solutions. For disposal of thallium from acidic solutions poured the above quantity of sulphate of manganese, neutralized by 5% alkali solution until slightly acid reaction, add a few drops of bromine until the yellow color 1cm
5% sodium hydroxide solution and heated for 1 h. Next do as stated above. Filter the precipitate of hydroxides of thallium and manganese, placed in a plastic bag and sent to the manufacturer for recycling.
(Changed edition, Rev. N 2)
.
11.14. To prevent contamination of wastewater and air by toxic substances, recycling, disposal and destruction of waste analyses performed in accordance with the documentation approved in the established order and agreed with the sanitary-epidemiological service of Ministry of health of the USSR.
(Added, Rev. N 1).
11.15. All work on the analyses of thallium must be performed in a dry working clothes and safety devices (cotton Bathrobe 12.4.131 according to GOST and GOST 12.4.132, rubber gloves according to GOST 3, safety glasses according to GOST 12.4.013,* respirator type «Petal D») according to GOST
______________
* On the territory of the Russian Federation GOST
(Changed edition, Rev. N 2).
11.16. Overalls and means of protection should be used according to the instructions on the procedure of issuing, storage and use of protective clothing, footwear and safety devices approved by the state Committee for labour and social Affairs.
(Added, Rev. N 1).
11.17. Persons under the age of 18 are not permitted to work on the analysis of thallium. Re-entered the work as well as working with thallium should undergo initial and periodic medical examinations according to the instructions of the USSR Ministry of health, special safety instructions with the corresponding record in the prescribed manner according to GOST 12.0.004, advanced training in safe working methods with thallium and rules for the treatment of protective equipment.
(Changed edition, Rev. N 2).
11.18. Persons employed in the analysis of thallium should be provided healthful and dietary meals according to the list of productions, professions and positions, work in which entitles you to free treatment-and-prophylactic food in connection with especially harmful working conditions. It should be guided by the methodological recommendations for health and Wellness activities during work with thallium and its compounds.
11.19. Upon detection of signs of poisoning (pain when swallowing, sudden swelling of the legs, pain in legs, skin peeling, headache, an unpleasant tingling feeling in the soles of the feet), you should immediately remove person from the work space, provide fresh air, rest and seek medical advice.
11.18−11.19. (Added, Rev. N 1).
12. Control of the correctness of the results of the analysis carried out according to GOST 25086 method additives or by comparing the results of the analysis of the same samples obtained by the methods 22519.1 GOST — GOST 22519.7, with analysis results obtained according to the methods GOST 20997.2 — GOST 20997.5.
Control of the correctness of the results of the analysis carried out at least once a month, and also when replacing reagents and solutions after long interruptions and other changes that affect the result of the analysis.
(Changed edition, Rev. N 3).
13. The selection and preparation of samples is carried out according to GOST 18337*.
______________
* On the territory of the Russian Federation GOST 18337−95. — Note the manufacturer’s database.
(Added, Rev. N 2).
