| 硝酸汞滴定法测定磷矿石中氯离子含量 |
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| 引用本文： | 郭然,汤丽敏,李莉,王新梅,杨玉荣. 硝酸汞滴定法测定磷矿石中氯离子含量[J]. 中氮肥, 2013, 0(4): 59-61 |
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| 作者姓名： | 郭然 汤丽敏 李莉 王新梅 杨玉荣 |
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| 作者单位： | 河南晋开化工投资控股集团有限责任公司 |
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| 摘 要： | 根据磷矿石原料的特殊性,建立了测定其中氯离子含量的方法.磷矿石用稀硝酸溶解,提取出的氯离子在pH2.5 ～ pH3.5的乙醇环境中,与硝酸汞反应生成难电离的氯化汞,过量的汞离子与二苯偶氮碳酰肼生成蓝紫色的汞配合物以指示终点.加标回收率在97.1％～101.4％,相对标准偏差为1.5％～1.8％.
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| 关 键 词： | 磷矿石 提取 氯离子 硝酸汞滴定法 |
Determine Chlorion Level in Phosphoric Ore by Mercury Nitrate Titration |
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| GUO Ran,TANG Limin,LI Li,WANG Xinmei,YANG Yurong. Determine Chlorion Level in Phosphoric Ore by Mercury Nitrate Titration[J]. M-Sized Nitrogenous Fertilizer Progress, 2013, 0(4): 59-61 |
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| Authors: | GUO Ran TANG Limin LI Li WANG Xinmei YANG Yurong |
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| Affiliation: | (Henan Jinkai Chemical Industry Investment Holding Group Co.,Ltd,Kaifeng 475002,China) |
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| Abstract: | The determination method for chlorion ore＇s characteristics. The operation procedure was level in phosphoric ore was established on the basis of the followed by solving phosphoric ore into the nitric acid, then putting it in ethanol environment of pH2.5 - pH3.5, reacted with mercury nitrate to form mercuric chloride which is hard to be ionized. The redundant mercury ion reacted with diphenylcarbazone, generated bluish vio- let mercury complexes indicating test end. The recovery was between 97. 1% and 101.4%, and the relative standard deviation was between 1.5% and 1.8%. |
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| Keywords: | phosphoric ore extract chloric ion mercury nitrate titration |
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