ISO 3856-1:1984 色漆和清漆."可溶性”金属含量的测定.第1部分：铅含量的测定.火焰原子吸收光谱测定法和双硫腙分光光度法

标准编号：ISO 3856-1:1984

中文名称：色漆和清漆."可溶性”金属含量的测定.第1部分：铅含量的测定.火焰原子吸收光谱测定法和双硫腙分光光度法

英文名称：Paints and varnishes — Determination of "soluble" metal content — Part 1: Determination of lead content — Flame atomic absorption spectrometric method and dithizone spectrophotometric method

发布日期：1984-12

标准范围

AAS法的原理是将试验溶液吸入乙炔/空气火焰中。测量由铅空心阴极或铅放电灯发射的选定光谱线在283,3 nm范围内的吸收。双硫腙法的原理是用1,1,1-三氯乙烷中的双硫腙溶液从试验溶液中提取铅。在约520 nm波长下分光光度法测量双硫氰酸铅的红色。

The principle of the AAS method consists in aspiration of the test solution into an acetylen/air flame. Measurement of the absorption of the selected spectral line, emitted by a lead hollow-cathode or lead discharge lamp, in the region of 283,3 nm. The principle of the dithizone method consists in extraction of the lead from the test solution with an solution of dithizone in 1,1,1-trichloroethane. Spectrophotometric measurement of the red colour of the lead dithizonate at a wavelength of about 520 nm.

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