吖啶红与铬（VI）的高灵敏度荧光反应及其应用
[Highly sensitive fluorescent reaction of acridine red with chromium (VI) and its application].
作者信息
Ye Cun-Ling, Wang Xin-Ming, Fan Jing, Feng Su-Ling
机构信息
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
出版信息
Guang Pu Xue Yu Guang Pu Fen Xi. 2006 Jul;26(7):1294-7.
A simple and highly sensitive fluorimetric method for the determination of Cr(VI) was developed in the present paper. The method is based on the fluorescence enhancement of acridine red with Cr(VI) in the sulfuric acid medium. The effects of some experimental conditions on the determination of Cr(VI) were investigated in detail. The detection limit for Cr(VI) is 0.6 microg x L(-1), and the linear range of the determination is 2.0-32 microg x L(-1). The relative standard deviation of 11 replicate measurements is less than 2.0%. The proposed method has been successfully used to determine Cr(VI) in electroplating solution, waste chromic acid mixture, and alloy steel samples. The results obtained were compared with the certified values of Cr(VI) in standard samples and those provided by 1, 5-diphenylcarbazide method with satisfaction.
本文建立了一种简单且高灵敏度的荧光分析法用于测定Cr(VI)。该方法基于在硫酸介质中，吖啶红与Cr(VI)之间的荧光增强作用。详细研究了一些实验条件对Cr(VI)测定的影响。Cr(VI)的检出限为0.6 μg·L⁻¹，测定的线性范围为2.0 - 32 μg·L⁻¹。11次重复测量的相对标准偏差小于2.0%。所提出的方法已成功用于测定电镀液、废铬酸混合物和合金钢样品中的Cr(VI)。将获得的结果与标准样品中Cr(VI)的认定值以及由二苯卡巴肼法提供的值进行比较，结果令人满意。
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