Hyphenated liquid electrode glow discharge-dielectric barrier discharge molecular emission spectrometry for determination of dithiocarbamates
文献类型： 外文期刊
作者： Tian, Qiaoxia 1 ; Wang, Meiran 1 ; Li, Haoyue 1 ; Huan, Zhibo 1 ; Wang, MingYue 1 ; Lin, Jingling 1 ; Li, Bei 2 ; Han, Bingjun 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Hainan Prov Key Lab Qual & Safety Trop Fruits & V, Key Lab Trop Fruits & Vegetables Qual & Safety St, Anal & Test Ctr,Minist Agr & Rural Affairs, Haikou 571101, Hainan, Peoples R China
2.Hainan Inst Food Control, Haikou 570314, Hainan, Peoples R China
3.Huazhong Agr Univ, Coll Plant Sci & Technol, Wuhan 430070, Hubei, Peoples R China
关键词： Dithiocarbamate; Carbon disulfide; Liquid electrode glow discharge; Dielectric barrier discharge; Hyphenated detector; Molecular emission spectrometry
期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）
ISSN： 0308-8146
年卷期： 2023 年 429 卷
页码：
收录情况： SCI
摘要： A hyphenated liquid electrode glow discharge (LEGD)-dielectric barrier discharge (DBD) molecular emission spectrometer was constructed and used as a novel liquid chromatography (LC) detector for dithiocarbamates (DTC) determination. The LEGD was used as an acidolysis reactor for the in-situ transformation of DTCs into CS2 with high efficiencies of 74.11-97.98%. The DBD was used to excite CS2 gas to generate a specific molecular emission at 257.94 nm. The linear correlation coefficient of the method was > 0.99 from 1 to 200 mu g mL(-1). The detection limits ranged from 0.1 to 0.3 mu g mL(-1) with 76-119% recovery and relative standard deviations of 0.2-8.5%. Moreover, the hyphenated microplasma spectrometer achieved low power consumption, low temperature, immediate acidolysis, and high transformational efficiency, and can detect each DTC when combined with LC.
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