| DPD分光光度法测定水质中余氯的方法研究 |
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| 作者姓名： | 张吉喆 张倩 |
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| 作者单位： | 大连市环境监测中心; |
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| 摘 要： | 采用行业标准DPD分光光度法(HJ 568-2010)测定水中的游离余氯,验证了去掉第一点的低浓度曲线的有效性。分别比较不同的显色时间对吸光度的影响,结果表明显色时间应控制在10min以内。
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| 关 键 词： | DPD分光光度法 余氯 低浓度曲线 显色时间 |
Discussion on Determining Residual Chlorine in Water with DPD Photometry |
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| Institution: | ZhangJizhe( Dalian Environment Monitoring Center Dalian Liaoning 116023 ) |
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| Abstract: | DPD photometry （ HJ 568 -2010 ） was applied to determine residual chlorine in water. It was shown that the low concentration curve was still available while the first point was deleted. Influences of differ-ent color time on absorbance was compared, it was shown that color time should be within ten minutes. |
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| Keywords: | DPD photometry Residual chlorine Low concentration curve Color time |
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