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【求助】汞形态分析吸收液配制
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| 采用安大略方法分析汞形态时使用的H2SO4-KMnO4溶液怎么配制？急求配制详细过程。 |
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3楼2009-05-09 09:47:57
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郭芙蓉(金币+2,VIP+0):不错的主意 5-9 12:34
郭芙蓉(金币+2,VIP+0):不错的主意 5-9 12:34
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H2SO4–KMnO4 Absorbing Solution (4 %W/V KMnO4,10 %V/V H2SO4)—Mix carefully, with stirring, 100 mL of concentrated H2SO4 into approximately 800 mL of water. When mixing, be sure to follow standard acid to water addition procedures and safety precautions associated with strong acids. Then add water, with stirring, to make 1 L. This solution is 10 %V/V H2SO4. Dissolve, with stirring, 40 g of KMnO4 into 10 %V/V H2SO4, and add 10 %V/V H2SO3, with stirring, to make 1 L. To prevent autocatalytic decomposition of the permanganate solution, filter the solution through filter paper. (Warning—See 9.1.1). H2SO4–KMnO4 absorbing Solution must be made daily. |
2楼2009-05-08 09:13:15