Microfluidics in environmental monitoring: liquid microsamples by an in-torch vaporization: microplasma device (ITV-MPD)

Kara E. Johnson; William Vander Wilp; Vassili Karanassios

doi:10.1117/12.417467

26 February 2001 Microfluidics in environmental monitoring: liquid microsamples by an in-torch vaporization: microplasma device (ITV-MPD)

Kara E. Johnson, William Vander Wilp, Vassili Karanassios

Author Affiliations +

Proceedings Volume 4205, Advanced Environmental and Chemical Sensing Technology; (2001) https://doi.org/10.1117/12.417467
Event: Environmental and Industrial Sensing, 2000, Boston, MA, United States

Abstract

Among other advantages over their traditional, full-size counterparts, micro-plasmas present the possibility of cost savings due to a reduction in the flow-rate of expensive plasma support gases such as argon or helium. Despite their advantages, micro-plasmas are not often used because they cannot handle the relatively large sample loads produced by the traditional pneumatic nebulization sample introduction systems typically used in full-size plasmas when analyzing liquid samples. This paper describes steps taken to couple an in-torch vaporization (ITV) "dry" sample introduction system to a dc micro-plasma (which has been designed around a micro-fluidics micro-channel) for use in environmental analysis of liquid micro-samples by atomic emission spectrometry (AES).

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Kara E. Johnson, William Vander Wilp, and Vassili Karanassios "Microfluidics in environmental monitoring: liquid microsamples by an in-torch vaporization: microplasma device (ITV-MPD)", Proc. SPIE 4205, Advanced Environmental and Chemical Sensing Technology, (26 February 2001); https://doi.org/10.1117/12.417467

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