| 磷矿石中有机碳的测定 |
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| 引用本文： | 李张胜,吴吉玲. 磷矿石中有机碳的测定[J]. 云南化工, 2008, 35(4) |
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| 作者姓名： | 李张胜 吴吉玲 |
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| 作者单位： | 云南云天化国际化工股份有限公司富瑞分公司,云南,安宁,650309 |
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| 摘 要： | 利用H2SO4-K2Cr2O7混合标准溶液作为氧化剂,将磷矿石在沸水浴中加热回流氧化其中的有机碳,用硫酸亚铁铵标准滴定溶液回滴过量的H2SO4-K2Cr2O7溶液,测定磷矿石中有机碳的含量。结果表明,本方法的SD<0.002,CV<3.2,加标回收率在95.3%~108.0%。
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| 关 键 词： | 磷矿石 沸水浴 硫酸-重铬酸钾 混合标准溶液 有机碳 |
Determination of Organic Carbon from Phosphate Ore |
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| LI Zhang-sheng,WU JI-ling. Determination of Organic Carbon from Phosphate Ore[J]. Yunnan Chemical Technology, 2008, 35(4) |
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| Authors: | LI Zhang-sheng WU JI-ling |
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| Abstract: | Organic carbon from phosphate ore was oxidized by sulfuric acid-potassium dichromate standard solution on boiling water bath,and then titrated on the excessive sulfuric acid-potassium dichromate by ammonium ferrous sulphate standard solution.The content of organic carbon was calculated,and the SD and CV was lower than 0.002 and 3.2% respectively with the recovery of 95.3~108.0%. |
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| Keywords: | phosphate ore boiling water bath sulfuric acid-potassium dichromate standard solution organic carbon |
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