Rapid and simultaneous detection of cadmium and mercury in foods based on solid sampling integrated electrothermal vaporization technique

文献类型： 外文期刊

第一作者： Jia, Hongyu

作者： Jia, Hongyu;Lan, Guanyu;Li, Xue;Chen, Lin;Mao, Xuefei;Jia, Hongyu;Lan, Guanyu;Li, Xue;Chen, Lin;Mao, Xuefei;Feng, Li

作者机构：

关键词： Solid sampling; Cadmium; Mercury; Foods; Integrated electrothermal vaporization; Rapid and simultaneous detection

期刊名称：FOOD CHEMISTRY （ 影响因子：8.5； 五年影响因子：8.2 ）

ISSN： 0308-8146

年卷期： 2024 年 457 卷

页码：

收录情况： SCI

摘要： This work presents an innovative solid sampling (SS) integrated electrothermal vaporization (ETV) approach for simultaneous determination of Cd and Hg based on differentiated elemental vaporization and transportation behavior characteristics. A miniature N-2/H-2 generator, only consuming electricity and H2O, was utilized to yield reducing atmosphere for Cd vaporization; MgO filler was modified to absorb matrix interferent and keep Hg and Cd transportation via 1(st) catalytic pyrolysis furnace (CPF); and a gearing was employed to move 2(nd) CPF to receive and trap (amalgamation) the vaporized Hg from ETV and then thermo-release them for simultaneous detection. Under optimized conditions, the limits of detection of Cd and Hg reached 0.02-0.04 ng/g using 0.4 g sample size. The linearities (R-2) exceeded 0.998 and recoveries were 85.0-111.9%, indicating favorable analysis precision and accuracy within similar to 3 min without sample digestion process. The proposed HgCd analyzer is suitable for rapid monitoring food with simplicity, green and safety.

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