| 总铬自动在线检测仪测定水样中总铬含量 |
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| 引用本文： | 欧朝凤,徐文华,冯鹏飞,陈斌,陆晶,孙浩淼.总铬自动在线检测仪测定水样中总铬含量[J].化工环保,2015,35(2):214-218. |
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| 作者姓名： | 欧朝凤 徐文华 冯鹏飞 陈斌 陆晶 孙浩淼 |
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| 作者单位： | 浙江环茂自控科技有限公司,浙江 杭州 310052 |
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| 摘 要： | 采用总铬自动在线检测仪测定水样中的总铬含量。测定5 m L水样的最佳实验条件为:过硫酸钾质量浓度为2.0 g/L的过硫酸钾溶液加入量1.0 m L,浓度为0.01 mol/L的硫酸加入量1.0 m L,二苯碳酰二肼质量浓度为2 g/L的显色剂加入量1.0 m L。该方法的检测范围为0.01~2.50 mg/L,检出限为0.01 mg/L。方法的加标回收率为97.5%~103.8%,相对标准偏差为1.17%~1.27%。
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| 关 键 词： | 重金属污染 铬 在线检测 分光光度法 二苯碳酰二肼 分析方法 |
| 收稿时间： | 2015-04-22 |
Determination of Total Chromium in Water by Automatic On-Line Analyzer |
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| Ou Chaofeng,Xu Wenhua,Feng Pengfei,Chen Bin,Lu Jing,Sun Haomiao.Determination of Total Chromium in Water by Automatic On-Line Analyzer[J].Environmental Protection of Chemical Industry,2015,35(2):214-218. |
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| Authors: | Ou Chaofeng Xu Wenhua Feng Pengfei Chen Bin Lu Jing Sun Haomiao |
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| Affiliation: | Zhejiang Huanmao Auto-Control Technology Co. Ltd.,Hangzhou Zhejiang 310052,China |
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| Abstract: | The total chromium content in water was determined by an automatic on-line analyzer. The optimum experimental conditions for 5 mL water sample are as follows：the dosage of 2.0 g/L potassium persulfate solution 1.0 mL,the dosage of 0.01 mol/L sulphuric acid 1.0 mL and the dosage of chromogenic agent with 2 g/L of diphenyl hydrazine mass concentration 1.0 mL. The linear range is 0.01-2.50 mg/L and the detection limit is 0.01 mg/L. The standard addition recoveries of the method are 97.5%-103.8% and the relative standard deviations are 1.17%-1.27%. |
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| Keywords: | heavy metal pollution chromium on-line determination spectrophotometry diphenylcarbazide analysis method |
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