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近年来痕量银的测定方法不断有报道,将银离子用巯基棉分离富集后用石墨炉原子吸收法可测定1.3×10~(-7)7mol·L~(-1)的银,用X-射线荧光法测定银为1.2×10~(-6)mol·L~(-1),用玻璃电极阳极溶出伏安法测定铅中1.0×10~(-6)～1.5×10~(-9)mol·L~(-1)的银和电影洗印污水中9.3×10~(-5)～4.6×10~(-5)mol·L~(-1)的银,利用Ag(Ⅰ)-明胶的相互作用吸光光度法可测定9.3×10~(-5)～9.3×10~(-7)mol·L~(-1)的银,利用溴甲酚绿作指示剂的催化体系,用微机处理试验数据可测定1.9×10~(-7)～4.6×10~(-9)mol·L~(-1)的银
In recent years, the determination of trace silver has been reported continuously, the silver ions were separated and enriched with mercaptan cotton graphite furnace atomic absorption spectrometry determination of 1.3 × 10 ~ (7) 7mol·L -1 silver, with The silver was determined to be 1.2 × 10 -6 mol·L -1 by X-ray fluorescence spectrometry. The anodic stripping voltammetry of glass was used to determine the contents of 1.0 × 10 -6 -6.5 × 10 -6 9.3 × 10 ~ (-5) ~ 4.6 × 10 ~ (-5) mol·L ~ (-1) silver in silver and cinem printing wastes by using Ag (Ⅰ) - ) - gelatin interaction spectrophotometry can be used to determine the silver content of 9.3 × 10 -5 ~ 9.3 × 10 -7 mol·L -1, and the catalytic system using bromocresol green as indicator , The data of the computer processing can be measured 1.9 × 10 ~ (-7) ~ 4.6 × 10 ~ (-9) mol·L -1 of silver