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Application of Colorimetric Solid Phase Extraction (C-SPE) to Monitoring Nickel(II) and Lead(II) in Spacecraft Water Supplies
Technical Paper
2004-01-2539
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Archived water samples collected on the International Space Station (ISS) and returned to Earth for analysis have, in a few instances, contained trace levels of heavy metals. Building on our previous advances using Colorimetric Solid Phase Extraction (C-SPE) as a biocide monitoring technique [1, 2], we are devising methods for the low level monitoring of nickel(II), lead(II) and other heavy metals. C-SPE is a sorption-spectrophotometric platform based on the extraction of analytes onto a membrane impregnated with a colorimetric reagent that are then quantified on the surface of the membrane using a diffuse reflectance spectrophotometer. Along these lines, we have analyzed nickel(II) via complexation with dimethylglyoxime (DMG) and begun to examine the analysis of lead(II) by its reaction with 2,5-dimercapto-1, 3, 4-thiadiazole (DMTD) and 4-(2-pyridylazo)-resorcinol (PAR). These developments are also extending a new variant of C-SPE in which immobilized reagents are being incorporated into this methodology in order to optimize sample reaction conditions and to introduce the colorimetric reagent. This paper describes the status of our development of these two new methods.
Authors
- Neil C. Dias - Ames Laboratory - U.S.D.O.E. Department of Chemistry, Iowa State University
- Daniel B. Gazda - Ames Laboratory - U.S.D.O.E. Department of Chemistry, Iowa State University
- James S. Fritz - Ames Laboratory - U.S.D.O.E. Department of Chemistry, Iowa State University
- Marc D. Porter - Ames Laboratory - U.S.D.O.E. Department of Chemistry, Iowa State University
- Jeff Rutz - Wyle Laboratories
- Paul Mudgett - Wyle Laboratories
- John Schultz - Wyle Laboratories
Topic
Citation
Dias, N., Gazda, D., Fritz, J., Porter, M. et al., "Application of Colorimetric Solid Phase Extraction (C-SPE) to Monitoring Nickel(II) and Lead(II) in Spacecraft Water Supplies," SAE Technical Paper 2004-01-2539, 2004, https://doi.org/10.4271/2004-01-2539.Also In
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