Simultaneous detection of zinc dimethyldithiocarbamate and zinc ethylenebisdithiocarbamate in cabbage leaves by capillary electrophoresis with inductively coupled plasma mass spectrometry

Abstract

We report a simple and highly sensitive method for the simultaneous detection of trace zinc dimethyldithiocarbamate and zinc ethylenebisdithiocarbamate by capillary electrophoresis with inductively coupled plasma mass spectrometry. Zinc dimethyldithiocarbamate and zinc ethylenebisdithiocarbamate were chelated with trans-1,2-diaminocyclohexane-N,N,N',N'-tetraacetic acid to form a macromolecule complex. Then, these two compounds were separated by α-cyclodextrin-modified capillary electrophoresis within 12 min at a separation voltage of 15 kV and measured by inductively coupled plasma mass spectrometry. The developed method is sensitive with detection limit of 1.9 and 3.0 ng Zn/mL for zinc dimethyldithiocarbamate and zinc ethylenebisdithiocarbamate, respectively. By means of ultrasound-assisted extraction methods, zinc dimethyldithiocarbamate and zinc ethylenebisdithiocarbamate spiked into cabbage leaves were successfully extracted and determined with a relative standard deviation (n = 5) ≤ 6% and a recovery of 95-107%.

Recent advances in capillary electrophoresis‐mass spectrometry: Instrumentation, methodology and applications

“…In this way, improved resolution and close to zero dead volume could be achieved. Based on their previous results, the same group improved interface settings for the quantification of zinc‐based fungicides by CZE‐ICP‐MS . An alternative interface concept was introduced by Shuai et al.…”

Electroanalytical Determination of Ziram by Differential Pulse Voltammetry with Reduced Graphene Oxide/Gold Nanoparticles Modified Glassy Carbon Electrode

“…It's also linked to skin allergies, asthma, Parkinson's disease risk, and inflammation of the eyes and respiratory tract. [27][28][29][30][31][32] Several analytical instruments, such as high-performance liquid chromatography followed by atomic absorption spectrometry (HPLC-AAS ),33 liquid chromatography-mass spectrometry (LC-MS/MS), 34 and gas chromatography-mass spectrometry (GC-MS), 35 gas chromatography-electron capture detector (GC-ECD), 36 inductively coupled plasma mass spectrometry 37 are widely used in monitoring environmental contaminants such as ziram in agricultural products. Electrochemical detection [38][39][40][41][42][43] and immunoassays 44 are some of the other rapid methods for detecting trace compounds that have been proposed.…”

Atomic Spectrometry Update – a review of advances in environmental analysis

“…cultures. A method for the simultaneous detection of trace Zn dimethyldithiocarbamate andZn ethylenebisdithiocarbamate by CE and ICP-MS involved160 chelation of the compounds with trans-1,2-diaminocyclohexane-N,N,N′,N′-tetraacetic acid to form a macromolecular complex. The two chelates were separated by α-cyclodextrin-modified CE at a separation voltage of 15 kV for 12 minutes.…”