| 流动注射-荧光熄灭法测定水中的铜 |
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| 引用本文： | 张敬东.流动注射-荧光熄灭法测定水中的铜[J].环境工程,2002,20(1):62-63. |
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| 作者姓名： | 张敬东 |
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| 作者单位： | 1. 武汉大学环境工程系,湖北,430072
2. 慕尼黑工业大学水环境研究所,德国D-81377 |
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| 摘 要： | 采用单通道流动注射 -新试铜灵荧光熄灭法测定水环境中重金属离子Cu(Ⅱ )。在新试铜灵的浓度为 2 5×10 - 5mol L ,激发波长为 2 81nm ,发射波长为 419nm下 ,Cu(Ⅱ )浓度为 0 12 5～ 5mg L范围内 ,荧光强度与Cu(Ⅱ )浓度呈线性关系 ,检出限 0 0 76mg L ,进样速率 90次 min ,对 3mg L的Cu(Ⅱ ) 10次测定的相对标准偏差为 0 32 %～ 2 97% ,河水和矿井水中加标回收率为 95 %～ 10 5 %。该方法选择性好 ,适合于水环境大批量样品中微量铜的快速测定
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| 关 键 词： | 流动注射 荧光熄灭 新试铜灵 铜(Ⅱ) |
DETERMINATION OF TRACE COPPER IN WATE USING FLOW INJECTION ANALYSIS-FLUO-RESCENCE QUENCHING |
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| Reinhard Niessner.DETERMINATION OF TRACE COPPER IN WATE USING FLOW INJECTION ANALYSIS-FLUO-RESCENCE QUENCHING[J].Environmental Engineering,2002,20(1):62-63. |
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| Authors: | Reinhard Niessner |
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| Institution: | Zhang Jingdong |
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| Abstract: | This paper presents a method for determination trace copper(Ⅱ) in water using neocuproin fluorescence quenching coupled with FIA.A linear calibration curve is obtained in range 0.125 mg/L～5 mg/L of copper(Ⅱ) with a detection limit of 0.076 mg/L.For the 10 determinations of 3 mg/L copper(Ⅱ),the RSD is 0.25～2.97%.The recovery for the determination of copper (Ⅱ) in river water and mine water is 95～105%.The sampling rate is 90 samples/min. |
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| Keywords: | flow injection analysis fluoresence quenching neocuproin and copper (Ⅱ) |
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