标准摘要
[中文适用范围]： AAS 方法的原理是将测试溶液吸入乙炔/空气火焰中。 测量由铅空心阴极或铅放电灯发出的选定光谱线在 283.3 nm 区域的吸收率。 双硫腙法的原理是用双硫腙的 1,1,1-三氯乙烷溶液从测试溶液中萃取铅。 在约 520 nm 波长处对二硫代铅的红色进行分光光度测量。 [外文原描述]： 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.
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