| 顺序注射光度法测定水体中正磷酸盐 |
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| 引用本文： | 张尚正,魏福祥,何 礼,许 嫔. 顺序注射光度法测定水体中正磷酸盐[J]. 河北工业科技, 2014, 31(2): 124-128 |
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| 作者姓名： | 张尚正 魏福祥 何 礼 许 嫔 |
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| 作者单位： | 河北科技大学环境科学与工程学院;河北省污染防治生物技术实验室; |
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| 基金项目： | 国家863计划(2007AA09210109) |
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| 摘 要： | 应用FIAlab-3500顺序注射分析仪,采用钼锑抗分光光度法测定水中的正磷酸盐,对实验参数进行了优化。实验结果表明,正磷酸盐质量浓度在0~5 mg/L范围内与吸光度呈良好线性关系,方程为y=0.112 8x-0.005 1(R2=0.999 2),空白相对标准偏差(RSD)为1.2%,方法的检出限为0.009 3 mg/L。利用该法测定某管网水中正磷酸盐,测得其加标回收率为96%~105%。
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| 关 键 词： | 顺序注射(SIA) 正磷酸盐 分光光度法 |
| 收稿时间： | 2013-10-14 |
| 修稿时间： | 2013-11-29 |
Determination of orthophosphate in water by sequential injection analysis and spectrophotometry |
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| ZHANG Shangzheng,WEI Fuxiang,HE Li and XU Pin. Determination of orthophosphate in water by sequential injection analysis and spectrophotometry[J]. Hebei Journal of Industrial Science & Technology, 2014, 31(2): 124-128 |
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| Authors: | ZHANG Shangzheng WEI Fuxiang HE Li XU Pin |
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| Abstract: | By using ammonium molybdate spectrophotometric method,orthophosphate in water was determinated by FIAlab-3500 sequential injection analysis system,and the experimental parameters were optimized. The results show that orthophosphate concentration is in the range of 0 ~ 5 mg / L and the absorbance is linear. The linear equation is y = 0. 112 8x- 0. 005 1(R2= 0. 999 2),and blank relative standard deviation(RSD) is 1. 2%. The limit of detection is 0. 009 3 mg / L. The orthophosphate in pipe network water is analyzed and the recovery of standard addition is 96% ~ 105%. |
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| Keywords: | sequential injection analysis(SIA) orthophosphate spectrophotometry |
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