ISO 6503-1984 色漆和清漆 铅总含量的测定 火焰原子吸收光谱法

标准号：ISO 6503-1984
中文标准名称：色漆和清漆 铅总含量的测定 火焰原子吸收光谱法
英文标准名称：Paints and varnishes; Determination of total lead; Flame atomic absorption spectrometric method
标准类型：G50
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G50
国际标准分类号：87.040
适用范围：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.