摘要
研究了在ｐＨ＝２～３的条件下，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对水中Ｃｒ（Ⅲ）和Ｃｒ（Ⅵ）进行交换吸附，在Ｎａ２ＳＯ４存在下，用火焰原子吸收法直接测定交换后溶液中的Ｃｒ（Ⅵ）和Ｃｒ（Ⅲ）。方法简便易行，快速，特征质量为０．０７２μｇ／ｍＬ，相对标准偏差为２．７％，回收率为９５％～１０６％
The exchange absorption of Cr (Ⅲ) and Cr (Ⅵ) in water was studied with 001strong acidic cation and 201×7strong basic anion exchange resin.In the presance of sodium sulfate,Cr (Ⅵ) and Cr (Ⅲ) in the filtrate were directly detected.The method is simple and rapid.The sensitivity of 0.072 uglml (1% absortion),relatire standard deviation of 2.7% and recovery rate of 95%-106% are obtained respectively.
