用N-（1-萘基）乙二胺高灵敏度荧光光谱法测定痕量亚硝酸盐
[Highly sensitive spectrofluorimetric determination of trace amounts of nitrite with N-(1-naphthyl) ethylenediamine].
作者信息
Zhou Yun-You, She Shi-Ke, Lu Qin, Zhu Chang-Qing, Wang Lun
机构信息
College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, China.
出版信息
Guang Pu Xue Yu Guang Pu Fen Xi. 2005 Aug;25(8):1318-21.
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 microg x L(-1) with a 3sigma detection limit of 0.069 microg x L(-1) under the optimum experimental conditions. This proposed method has been applied to the determination of trace amounts of NO2- in tap water and lake water without extraction.
建立了一种简单灵敏的荧光猝灭法测定痕量亚硝酸盐。该方法基于NED与亚硝酸盐在酸性介质中反应形成一种新的化合物，该化合物具有弱荧光。在最佳实验条件下，线性范围为1.07 - 214.0 μg·L⁻¹，3σ检测限为0.069 μg·L⁻¹。该方法已应用于自来水和湖水中痕量NO₂⁻的测定，无需萃取。
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