| 光谱学与光谱分析 |
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| Highly Sensitive Spectrofluorimetric Determination of Trace Amounts of Nitrite with N-(1-Naphthyl) Ethylenediamine |
| ZHOU Yun-you，SHE Shi-ke，LU Qin，ZHU Chang-qing，WANG Lun* |
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Abstract A simple and sensitive fluorescence quenching method for the determination of trace nitrite was developed.The method is based on the reaction of NED with nitrite in acidic medium to form a new compound, which has weak fluorescence.The linear range was 1.07-214.0 μg·L-1 with a 3σ detection limit of 0.069 μg·L-1 under the optimum experimental conditions.This proposed method has been applied to the determination of trace amounts of NO-2 in tap water and lake water without extraction.
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Received: 2004-04-16
Accepted: 2004-08-26
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Corresponding Authors:
WANG Lun
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