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Battery-Operated Portable High-Throughput Solution Cathode Glow Discharge Optical Emission Spectrometry for Environmental Metal Detection

Abstract

In this study, a miniaturized optical emission spectrometry (OES) based on solution cathode glow discharge (SCGD) was developed for the determination of metal elements in samples. By redesigning and integrating the entire device, it can be controlled at the computer end to achieve automatic detection and analysis with battery power. The detection process does not require complex pretreatment of the liquid sample, thereby enabling analysis in an environmentally friendly manner. A series of parameters affecting the analysis process were investigated. Without any separation or enrichment of the analyte, the proposed SCGD-OES instrument could analyze Cd, Hg and Pb simultaneously, with the detection limits (DLs) in the range of 33–253 µg∙L-1 (flow injection mode) and 7–92 µg∙L-1 (continuous flow mode). The calibration curves for Cd, Hg and Pb were linear in the concentration range of 2–50 µg∙mL-1. The instrument was successfully applied for certified reference materials (CRMs), tap water, and seawater samples. The experimental results demonstrated the accuracy and practicality of the instrument.

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Publication details

The article was received on 31 Oct 2018, accepted on 03 Dec 2018 and first published on 03 Dec 2018


Article type: Technical Note
DOI: 10.1039/C8JA00369F
Citation: J. Anal. At. Spectrom., 2018, Accepted Manuscript
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    Battery-Operated Portable High-Throughput Solution Cathode Glow Discharge Optical Emission Spectrometry for Environmental Metal Detection

    X. Peng, X. Guo, F. Ge and Z. Wang, J. Anal. At. Spectrom., 2018, Accepted Manuscript , DOI: 10.1039/C8JA00369F

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