Portable smartphone-based device for on-site detection of Hg2+ in water samples

文献类型： 外文期刊

第一作者： Zhao, Xiaofang

作者： Zhao, Xiaofang;Zhao, Xiaofang;Jiao, Zhe;Liu, Yipian;Shu, Bao;Guo, Zongning;Huang, Xuelin;Song, Chao;Song, Chao;Jiao, Zhe

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关键词： Hg2+; smartphone; rhodaminespirolactam-based derivative; on-site analysis

期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY （ 影响因子：2.826； 五年影响因子：2.215 ）

ISSN： 0306-7319

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页码：

收录情况： SCI

摘要： In this paper, a smartphone-based portable device was designed for on-site and real-time detection of Hg2+ concentration levels in water samples. A rhodaminespirolactam-based derivative3MODIFIER LETTER PRIME,6MODIFIER LETTER PRIME-bis(diethylamino)-2-((3,4,5-trimethoxybenzylidene)amino)spiro[isoindoline-1,9MODIFIER LETTER PRIME-xanthen]-3-one, which had selective response to Hg2+,was used as Off-On fluorescent probe. The enhanced emission was observed by a high-pixel camera integrated on the smartphone. The grey value was analysed by an android/apple application 'Detection', and showed good linearly with Hg2+ concentration ranged from 0.01 to 0.1 mu g/ml. The limit of detection (LODs) was found at 0.9 mu g/l, which was sensitive enough to detect Hg2+ in industrial wastewater and drinking water. The accuracy of the proposed method was validated by reference Hg2+ solution, and the result was in good agreement with the certified value. Compared with cold vapour atomic fluorescence spectrophotometry, atomic absorption spectrophotometry methods and fluorescence method, etc., the developed platform is simpler, cost-less and portable for on-site and real-time application, and can be used for sharing of in-field sensing data from any remote location to the central water quality monitoring station.

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