Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305, USA.
Mar Pollut Bull. 2010 Aug;60(8):1376-82. doi: 10.1016/j.marpolbul.2010.04.019. Epub 2010 Jun 16.
Caffeine has been associated with wastewater pollution in temperate and subtropical locations, but environmental caffeine concentrations in tropical locations have not been reported. The objectives of this study were to measure caffeine and agricultural pesticide (carbaryl, metalaxyl, and metribuzin) concentrations in environmental waters on the tropical north shore of Kauai (Hawaii, USA) and assess whether patterns in caffeine concentration were consistent with a wastewater caffeine source. Groundwater, river, stream and coastal ocean samples were collected in August 2006 and February 2007. Caffeine was detected in all August 2006 samples and in 33% of February 2007 samples at concentrations up to 88ngL(-1). Metribuzin was detected in five samples collected in February 2007. Carbaryl and metalaxyl were not detected in any sample. Caffeine was not detected in offshore ocean samples or river samples upstream of human development. A positive correlation between caffeine and enterococci suggested a possible wastewater caffeine source.
咖啡因已与温带和亚热带地区的废水污染有关，但热带地区的环境咖啡因浓度尚未报道。本研究的目的是测量考艾岛（美国夏威夷州）热带北岸环境水中的咖啡因和农业杀虫剂（西玛津、甲霜灵和噻虫嗪）浓度，并评估咖啡因浓度的模式是否与废水咖啡因源一致。2006 年 8 月和 2007 年 2 月采集了地下水、河水、溪流和近岸海域样本。在 2006 年 8 月的所有样本中都检测到了咖啡因，在 2007 年 2 月的 33%的样本中检测到咖啡因，浓度高达 88ng/L。在 2007 年 2 月采集的五个样本中检测到西玛津。在任何样本中都未检测到甲霜灵和噻虫嗪。在近海海域样本或人类开发上游的河流样本中未检测到咖啡因。咖啡因与肠球菌呈正相关，表明可能存在废水咖啡因源。
