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引用本文:   于竞翔, 刘国宏, 任丽君, 刘萌, 黄志平, 李建, 李丹萍, 肖艳华. 新型便携式RGB色度传感器定量检测水中路易氏剂. 分析化学, 2020, 48(7): 962-968. doi:  10.19756/j.issn.0253-3820.191431 [复制]

Citation:   YU Jing-Xiang , LIU Guo-Hong , REN Li-Jun , LIU Meng , HUANG Zhi-Ping , LI Jian , LI Dan-Ping , XIAO Yan-Hua . A New Portable RGB Chromaticity Sensor for Quantitative Determination of Lewisite in Water. Chinese Journal of Analytical Chemistry, 2020, 48(7): 962-968. doi: 10.19756/j.issn.0253-3820.191431 [复制]

新型便携式RGB色度传感器定量检测水中路易氏剂

通讯作者:  刘国宏, liugh01@163.com

收稿日期: 2019-07-22

基金项目: 本文系国家重点研发计划项目(No.2017YFA0207102)资助

A New Portable RGB Chromaticity Sensor for Quantitative Determination of Lewisite in Water

Corresponding author:  LIU Guo-Hong , liugh01@163.com

Received Date:  2019-07-22

Fund Project:  This work was supported by the National Key Research and Development Program of China (No. 2017YFA0207102).

基于路易氏剂及其水解产物在碱性条件下与亚铜离子反应,溶液呈红色的原理,构建了定量检测水中路易氏剂的新型便携式RGB色度传感器。对增溶剂、还原剂的种类、还原剂浓度、CuCl2浓度、NaOH浓度、乙酸用量、反应温度、反应时间等因素进行优化,得到最优反应条件:增溶剂为明胶,还原剂为盐酸羟胺,盐酸羟胺浓度为0.32 mol/L,CuCl2浓度为0.15 mol/L,NaOH浓度为30%(m/m),36%(m/m)乙酸用量为30 μL,反应温度为室温,反应时间为5 min。在检测中采用源于归一化RGB系统的RGB(红绿蓝)色度法,克服了基于RGB模型的由于光强变化会导致3个刺激值的变化的问题。在最优条件下,色度值与路易氏剂浓度的标准曲线的线性范围为0.40~10.05 mg/L。本方法对R值和B值的理论检出限为0.389 mg/L和0.391 mg/L,实际检出限为0.40 mg/L。将本方法应用于人工水样中路易氏剂的测定,回收率为96.9%~106.9%。本方法具有较高的选择性、灵敏度和较好的重复性。

关键词:   RGB色度传感器, 路易氏剂,
Key words:   RGB chromaticity sensor, Lewisite, Water
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新型便携式RGB色度传感器定量检测水中路易氏剂

于竞翔, 刘国宏, 任丽君, 刘萌, 黄志平, 李建, 李丹萍, 肖艳华

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