【摘要】 本文研究了用国产001^#强酸性阳离子交换树脂,201×7^#强碱性阴离子交换树脂,分别对水中的 Cr（Ⅲ）和 Cr（Ⅵ）进行交换吸着,在 Na₂SO₄,存在下,用火焰原子吸收直接测定交换后溶液中的 Cr（Ⅵ）、Cr（Ⅲ）。方法简便快速,灵敏度为0.038μg/ml 1％吸收。相对标准偏差2.6％,回收率99～102％。更多还原

【Abstract】 The exchange adsorption of Cr(Ⅲ) and Cr(Ⅵ) in water was studied with 001 str- ong acidic cation and 201×7-strong basic anion exchange resin.In the Presence of sodi- um sulfate,Cr(Ⅵ) and Cr(Ⅲ) in the filtrate were directly detected.The method is simple and rapid.The sensitivity of 0.038μg/ml (1% absorption),relative standard devia- tion of 2.6%,and recovery rate of 98.8～102% are obtained respectively.更多还原