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邓霞霞

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[求助] 土壤对铜的吸附实验

我做的土壤对铜的吸附实验中,PH=5.5,铜离子浓度为40,60,80,100,120mg/L,原子吸收测定的吸光值很小且不成梯度,吸光值分别为0.0013,0.0012,0.0004,0.0044,-0.0001,但是PH=2.5的那一组的实验结果就很好吸光值分别为0.0647,0.0796,0.1260,0.1898,0.3043.请帮忙分析一下为什么会出现这种情况,谢谢
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