INORGANICCHEMICALSINDUSTRY ›› 2012, Vol. 44 ›› Issue (6): 52-.
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Yang Pei1,Fan Guoqiang1,Bai Ying1,Guo Yongxin1,Li Wenhao2
Published:
Abstract: There are disadvantages for the use of the orignial chemical industry standard(HG/T 3584—1999 Potassium Borohydride) to determine the content of potassium borohydride, such as:1)The addition of potassium iodide reagent(5 g) is too much resulting in wasting;2)The sampling weight of potassium borohydride is 0.2 g,accurately up to 0.000 2 g,but the determined content of potassium borohydride will be decreased when the sampling weight is larger.In allusion to above problems,the original potassium borohydride determination method(HG/T 3584—1999 Potassium Borohydride)was improved: 1)The potassium iodide addition is reduced to 2.5 g from 5 g so as to save the reagent consumption;2)According to the potassium borohydride′s deoxidization characteristics, the sampling weight is limited within a specific range.Experiment results were satisfied.
Key words: potassium borohydride, potassium iodide, sampling weight
CLC Number:
O655
YANG Pei, FAN Guo-Qiang, BAI Ying, GUO Yong-Xin, LI Wen-Hao. Improvement on analytical method for potassium borohydride[J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(6): 52-.
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