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北京石油化工学院2026年研究生招生接收调剂公告
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cat2115

[交流] 【求助】汞形态分析吸收液配制

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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yscjr

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郭芙蓉(金币+1,VIP+0):不错的主意 5-9 12:34
10 %V/V H2SO4 是体积分数,4 %W/V KMnO4是质量分数,KMnO4最好买优级纯的。溶液需要搅拌很久,冬天做的时候,KMnO4不一定能都溶解了。
3楼2009-05-09 09:47:57
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fairyliu8288

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郭芙蓉(金币+2,VIP+0):不错的主意 5-9 12:34
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
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