Chromium speciation using large scale plasmas in a lab and towards field deployable speciation by employing a battery-operated microplasma-on-a-chip and optical emission spectrometry

Jenisse German; Vassili Karanassios

doi:10.1117/12.2177511

14 May 2015 Chromium speciation using large scale plasmas in a lab and towards field deployable speciation by employing a battery-operated microplasma-on-a-chip and optical emission spectrometry

Jenisse German, Vassili Karanassios

Author Affiliations +

Proceedings Volume 9482, Next-Generation Spectroscopic Technologies VIII; 948203 (2015) https://doi.org/10.1117/12.2177511
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

Chemical speciation is defined as the determination of the concentration of an analyte (e.g., Chromium or Cr) in the oxidation state in which it exists in the environment (e.g., sea water). Determinations of the concentration of different Cr-species is important due to toxicity differences of the different oxidation states of Cr. For example, Cr(III) is regarded as generally non-toxic and is considered as an essential micro-nutrient. But Cr(VI) is considered as carcinogenic. In this paper, speciation methods for Cr in sea water samples using large scale plasmas, such as an ICP (Inductively Coupled Plasma) and steps taken toward using a microplasma are described.

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Jenisse German and Vassili Karanassios "Chromium speciation using large scale plasmas in a lab and towards field deployable speciation by employing a battery-operated microplasma-on-a-chip and optical emission spectrometry", Proc. SPIE 9482, Next-Generation Spectroscopic Technologies VIII, 948203 (14 May 2015); https://doi.org/10.1117/12.2177511

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