| Literature DB >> 19895074 |
Grady Hanrahan1, Tina K Fan, Melanie Kantor, Keith Clark, Steven Cardenas, Darrell W Guillaume, Crist S Khachikian.
Abstract
The design and development of an automated flow injection instrument for the determination of arsenite [As(III)] and arsenate [As(V)] in natural waters is described. The instrument incorporates solenoid activated self-priming micropumps and electronic switching valves for controlling the fluidics of the system and a miniature charge-coupled device spectrometer operating in a graphical programming environment. The limits of detection were found to be 0.79 and 0.98 microM for As(III) and As(V), respectively, with linear range of 1-50 microM. Spiked ultrapure water samples were analyzed and recoveries were found to be 97%-101% for As(III) and 95%-99% for As(V), respectively. Future directions in terms of automation, optimization, and field deployment are discussed.Entities:
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Year: 2009 PMID： 19895074 PMCID： PMC2852450 DOI： 10.1063/1.3202083
Source DB: PubMed Journal: Rev Sci Instrum ISSN： 0034-6748 Impact factor: 1.523