| 分光光度法测定余氯的线性范围探讨 |
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| 引用本文： | 余一群,徐威毅. 分光光度法测定余氯的线性范围探讨[J]. 上海环境科学, 2000, 19(10): 495-496,499 |
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| 作者姓名： | 余一群 徐威毅 |
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| 作者单位： | 余一群（上海市徐汇区环境监测站，上海200032）;徐威毅（上海市徐汇区环境监测站，上海 200032） |
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| 摘 要： | 用分光光度法测定水样中的余氯，按照国际GB11898－89中的要求，整个浓度范围内（余氯0－5.00mg/L)所制得的标准曲线的相关系数在0.99-0.999之间。经对其标准曲线的线性范围进行探讨发现，当余氯的浓度范围为0－1.00mg/L时，标准曲线的线性较好，相关系数＞0．999；当余氯的浓度＞1.00mg/L，所绘制的标准曲线呈负偏离现象，相关系数＜0．999。
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| 关 键 词： | 分光光度法 余氯测定 线性范围 水质监测 |
Approach on Linear Range in Determination of Residual Chlorineby Spectrophotometry |
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| Yu Yiqun,Xu Weiyi. Approach on Linear Range in Determination of Residual Chlorineby Spectrophotometry[J]. Shanghai Environmental Science, 2000, 19(10): 495-496,499 |
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| Authors: | Yu Yiqun Xu Weiyi |
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| Abstract: | According to the state-standard GB11898-89, to determine the residual chlorine in water by spectro-photometry, the correlative coefficient of calibration curve during whole concentration range (residual chlorine 0 ~ 5.00mg/l)was within 0.99 ~ 0.999. Approaching on the linear range of calibration curve, it was found that the linear was better, and the correlative coefficient was >0.999 when the concentration range of residual chlorine was among 0 ~ 1.00mg/1; the calibration curve has negative deviation and the correlative coefficient was <0.999 when the concentration range of residual chlorine was >1.00mg/l. |
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| Keywords: | Spectrophotometry Residual chlorine Calibration curve Linear range correlative coefficient |
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