| NaOH-Na_2CO_3混合消解测定铬渣中六价铬 |
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| 引用本文： | 魏松,李瑾,肖亚琼.NaOH-Na_2CO_3混合消解测定铬渣中六价铬[J].环境科学与管理,2011,36(5):152-153,161. |
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| 作者姓名： | 魏松 李瑾 肖亚琼 |
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| 作者单位： | 湖南省环境保护科学研究院;水污染控制技术湖南省重点实验室; |
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| 摘 要： | 采用NaOH-Na2CO3、MgCl2和H3PO4缓冲溶液混合消解体系对铬渣进行处理,建立了铬渣中六价铬的测定方法。结果表明,此方法在0 mg/L~0.200 mg/L范围内线性良好,检出限为0.15 mg/kg(以0.5 g样品计),铬渣样品的RSD为5.5%,加标回收率为91.7%~106.3%。方法操作较为简便,精密度与准确度均符合要求。
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| 关 键 词： | 铬渣 六价铬测定 混合消解体系 |
Determination of Hexavalent Chromium in Chromium Residue Using the NaOH-Na_2CO_3 Mixed Digestion System |
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| Wei Song,Li Jin,Xiao Yaqiong.Determination of Hexavalent Chromium in Chromium Residue Using the NaOH-Na_2CO_3 Mixed Digestion System[J].Environmental Science and Management,2011,36(5):152-153,161. |
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| Authors: | Wei Song Li Jin Xiao Yaqiong |
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| Institution: | Wei Song1,2,Li Jin1,Xiao Yaqiong1,2(1.Hunan Research Academy of Environment Science,Changsha 410004,China,2.Hunan Key Laboratory of Water Pollution Control Technology,Changsha,410004,China) |
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| Abstract: | By proceeding chromium residue using the NaOH-Na2CO3,MgCl2 and H3PO4 buffer solution mixed digestion system;we established the determination of hexavalent chromium in chromium residue.Results showed that this method suggested a good linear relationship in the range of 0 mg/L~0.200 mg/L,detection limit is 0.15 mg/kg(taking 0.5g samples into account).The sample RSD was 5.5% and the recovery rate is 91.7%~106.3%.This method is relatively simple,with its precision and accuracy fulfilled the requirements. |
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| Keywords: | chromium residue determination of hexavalent chromium mixed digestion system |
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