Лаки и краски. Определение содержания общего свинца спектрометрическим методом атомной абсорбции в пламени
Название (англ.):
Paints and varnishes; Determination of total lead; Flame atomic absorption spectrometric method
Описание (англ.):
The method is principle to coating materials having lead contents in the range of about 0,01 % (m/m) to 2 % (m/m), may also be applicable to products with a total lead content of more than 2 % (m/m)when the requirements of precision does not exceed the specified values. two methods are given. The principle of the dry ashing method consists in evaporation of a test portion to dryness and ashing at 475 C and extraction of any lead in the residue with hydrochloric acid; that of the wet oxidation method consists in wet oxidation of a test portion with a mixture of sulfuric acid and hydrogen peroxide or with sulfuric acid and nitric acid and extraction of any lead in the residue with EDTA and ammonia solution.
Дата регистрации:
01.10.84
Дата введения:
01.10.84
Код КГС:
Л29
Код ОКСТУ:
2310;2309
Код ОКС(МКС):
87.040
Код ОКП:
2310;2309
Нормативные ссылки:
BS 3900 PART B4-1986, EQV*DIN ISO 6503-1985, EQV*NF T30-201-1981, EQV*NP-3905(/IPQ), EQV
Ключевые слова:
ATOMIC ABSORPTION SPECTROPHOTOMETRY CHEMICAL ANALYSIS CHEMICAL ANALYSIS AND TESTING CONTENT DETERMINATION OF CONTENT LACQUERS LEAD PAINTS TESTING VARNISHES ATOMIC ABSO CHEMICAL ANALYSIS AND TESTIN