Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 111, Issue 20, Pages 7208-7211Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1403175111
Keywords
water contamination; fluorescence spectroscopy; femtomolar detection
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Funding
- National Science Foundation [ECCS-1250360, DBI-1250361, CBET-125063, PHY-1241032, EEC-0540832]
- Robert A. Welch Foundation [A-1261]
- Herman F. Heep and Minnie Belle Heep Texas A&M University Endowed Fund
- Direct For Mathematical & Physical Scien
- Division Of Physics [1241032] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1250363] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1250360] Funding Source: National Science Foundation
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Clean water is paramount to human health. In this article, we present a technique for detection of trace amounts of human or animal waste products in water using fluorescence emission cavity-enhanced spectroscopy. The detection of femtomolar concentrations of urobilin, a metabolic byproduct of heme metabolism that is excreted in both human and animal waste in water, was achieved through the use of an integrating cavity. This technique could allow for real-time assessment of water quality without the need for expensive laboratory equipment.
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