Journal
ANALYTICAL CHEMISTRY
Volume 89, Issue 4, Pages 2205-2210Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.6b03523
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Funding
- Fundamental Research Funds for the Central Universities [HIT.NSRIF.201710]
- National Natural Science Foundation of China [21245005]
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This paper describes the first demonstration of a portable dielectric barrier discharge-atomic emission spectrometer (DBD-AES). The instrument primarily consists of a miniature electro-thermal vaporizer (ETV), DBD, and optical signal acquisition units. It weighs only 4.5 kg and is powered by a 24 V DC battery with a maximum power consumption of 37 W. The accompanying software can be operated on a laptop computer. A specially designed quartz tube integrates the ETV unit with the DBD chamber. The effects of experimental parameters were investigated. The limit of detection (LOD) for mercury was 0.4 mu g L-1 (1.2 pg) with a sampling volume of 3 mu L. The instrument is applicable for multielement analysis, and the LODs ranged from 0.16 to 11.65 mu g L-1 for Zn, Pb, Ag, Cd, Au, Cu, Mn, Fe, Cr, and As. The instrument was also validated by in-field analysis of seawater samples. The experimental results reliability, and practicality of the instrument.
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