期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 43, 期 20, 页码 7671-7675出版社
AMER CHEMICAL SOC
DOI: 10.1021/es901469t
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资金
- National Science Foundation CREST program [HRD-0317772]
- National Institute of Health RIMI program [1P20MD001824-01]
- National Institute of Health SCORE program [5S06 08101, 5SC3GM08368202]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0755567] Funding Source: National Science Foundation
- Division Of Human Resource Development
- Direct For Education and Human Resources [0932421] Funding Source: National Science Foundation
Little is known about the prebiotic mechanisms that initiated the bioavailability of phosphorus, an element essential to life. A better understanding of phosphorus speciation in modern earth environments representative of early earth may help to elucidate the origins of bioavailable phosphorus, This paper presents the first quantitative measurements of phosphite in a pristine geothermal pool representative of early earth. Phosphite and phosphate were initially identified and quantified in geothermal pool and stream samples at Hot Creek Gorge near Mammoth Lakes, California, using suppressed conductivity ion chromatography. Results confirmed the presence of 0.06 +/- 0.021 mu M of phosphite and 0.05 +/- 0.01 mu M of phosphate in a geothermal pool. In the stream, phosphite concentrations were below detection limit (0.04 mu M) and phosphate was measured at 1.06 +/- 0.36 uM. The presence of phosphite in the geothermal pool was confirmed using both chemical oxidation and ion chromatography/mass spectrometry.
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