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本文研究了银在活性炭上的吸附行为,提出了以硫酸、硝酸反复交替炭化,消化彻底分解破坏活性炭的处理技术。建立了活性炭富集火焰原子吸收测定天然水中亚μg/L水平银的分析方法。本法对8份平行样品测定的相对标准偏差为4.8%。样品加标回收率为92～112%。对水样的最低检出浓度为0.1μg/L。可用于天然水中痕量银的测定。
In this paper, the adsorption behavior of silver on activated carbon was studied, and the treatment technology of alternating carbonization with sulfuric acid and nitric acid and disintegrating activated carbon by digestion and thorough decomposition was proposed. A method for the determination of silver in natural water by flame atomic absorption spectrometry was established. The relative standard deviation of this method for eight parallel samples was 4.8%. Sample spike recovery was 92 ~ 112%. The minimum detectable concentration of water samples was 0.1μg / L. Can be used for determination of trace silver in natural water.