Journal article
Occurrence and concentration of caffeine in Oregon coastal waters
Marine pollution bulletin, Vol.64(7), pp.1417-1424
07/2012
Handle:
https://hdl.handle.net/2376/102658
PMID: 22647644
Abstract
► Caffeine was detected in Oregon coastal ocean waters measuring up to 44.7ng/L. ► Caffeine concentration did not correspond with human population density and pollution sources. ► Caffeine concentrations corresponded with storm event occurrence. ► Caffeine concentrations in rivers and estuaries draining to the coast measured up to 152.2ng/L.
Caffeine, a biologically active drug, is recognized as a contaminant of freshwater and marine systems. We quantified caffeine concentrations in Oregon’s coastal ocean to determine whether levels correlated with proximity to caffeine pollution sources. Caffeine was analyzed at 14 coastal locations, stratified between populated areas with sources of caffeine pollution and sparsely populated areas with no major caffeine pollution sources. Caffeine concentrations were measured in major water bodies discharging near sampling locations. Caffeine in seawater ranged from below the reporting limit (8.5ng/L) to 44.7ng/L. Caffeine occurrence and concentrations in seawater did not correspond with pollution threats from population density and point and non-point sources, but did correspond with storm event occurrence. Caffeine concentrations in rivers and estuaries draining to the coast ranged from below the reporting limit to 152.2ng/L. This study establishes the occurrence of caffeine in Oregon’s coastal waters, yet relative importance of sources, seasonal variability, and processes affecting caffeine transport into the coastal ocean require further research.
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Details
- Title
- Occurrence and concentration of caffeine in Oregon coastal waters
- Creators
- Zoe Rodriguez del Rey - Environmental Science and Management, Portland State University, P.O. Box 751, Portland, OR 97207, United StatesElise F Granek - Environmental Science and Management, Portland State University, P.O. Box 751, Portland, OR 97207, United StatesSteve Sylvester - School of Molecular Biosciences, Washington State University, Vancouver, 14204 NE Salmon Creek Avenue, Vancouver, WA 98686, United States
- Publication Details
- Marine pollution bulletin, Vol.64(7), pp.1417-1424
- Academic Unit
- Molecular Biosciences, School of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900546663401842
- Language
- English
- Resource Type
- Journal article