کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4425965 1309117 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Occurrence and potential toxicity of pyrethroids and other insecticides in bed sediments of urban streams in central Texas
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Occurrence and potential toxicity of pyrethroids and other insecticides in bed sediments of urban streams in central Texas
چکیده انگلیسی

Despite heavy insecticide usage in urban areas, only a few studies have investigated the impact of current-use insecticides on benthic invertebrates in urban streams. The objective of this study was to measure the presence and concentration of current-use pesticides in sediments of residential streams in central Texas. Additionally, toxicity of these sediments to Hyalella azteca was evaluated. Sediment samples were collected from several sites in urban streams over the course of a year, of which, 66% had greater than one toxic unit (TU) of insecticide. Bifenthrin was the greatest contributor accounting for 65% of the TUs, and sediment toxicity to H. azteca correlated with the magnitude of total insecticides and bifenthrin TUs. The results of this study further raise concerns over the environmental consequences posed by many current-use insecticides, especially pyrethroids, in urban settings.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 157, Issue 1, January 2009, Pages 110–116
نویسندگان
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