| 溴化物与氯化物对废水中CODCr测定的协同干扰效应及机理 |
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| 引用本文： | 王荟,赵敏敏,吴仲夏.溴化物与氯化物对废水中CODCr测定的协同干扰效应及机理[J].中国环境监测,2024,40(3):222-227. |
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| 作者姓名： | 王荟 赵敏敏 吴仲夏 |
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| 作者单位： | 江苏省环境监测中心, 国家环境保护地表水环境有机污染物监测分析重点实验室, 江苏 南京 210019 |
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| 基金项目： | 江苏省环境监测科研基金项目(2005) |
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| 摘 要： | 针对溴化物对CODCr产生正干扰的现象,通过测定和比较只含有氯化物或溴化物以及同时含有氯化物与溴化物混合物的CODCr标准溶液,考察了溶液中只含有氯离子或溴离子以及同时含有氯离子与溴离子对CODCr测定的干扰规律,探明溴化物以及氯化物、溴化物共存对CODCr测定的协同干扰效应及干扰机理,提出消除干扰的措施,即在低浓度测定模式下扣除1/10溴离子浓度,得到样品真实的CODCr值。
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| 关 键 词： | 溴化物 CODCr 干扰效应 干扰机理 |
| 收稿时间： | 2022/11/11 0:00:00 |
| 修稿时间： | 2023/8/22 0:00:00 |
Study on Synergistic Interference Effect and Interference Mechanism of Bromide and Chloride on the Determination of CODCr in Wastewater |
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| WANG Hui,ZHAO Minmin,WU Zhongxia.Study on Synergistic Interference Effect and Interference Mechanism of Bromide and Chloride on the Determination of CODCr in Wastewater[J].Environmental Monitoring in China,2024,40(3):222-227. |
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| Authors: | WANG Hui ZHAO Minmin WU Zhongxia |
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| Institution: | State Environmental Protection Key Laboratory of Monitoring and Analysis for Organic Pollutants in Surface Water, Jiangsu Provincial Environmental Monitoring Center, Nanjing 210019, China |
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| Abstract: | In view of the phenomenon that bromides produce positive interference to CODCr, the CODCr standard solutions containing chlorides, bromides and mixtures of chlorides and bromides were determined and comparedThe interference rule of chlorine ion,bromine ion and the cooperation of chlorine ion and bromine ion on the determination of CODCr was investigated,and the synergistic interference effect and interference mechanism of bromide and the coexistence of chloride and bromine on the determination of CODCr were studied. The measures to eliminate the interference of bromide were put forward. The real CODCr value of the sample was obtained by using the low concentration determination model and deducting 1/10 bromine ion concentration. |
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| Keywords: | bromide CODCr interference effect interference mechanism |
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