کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9451502 | 1307825 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Screening 31 endocrine-disrupting pesticides in water and surface sediment samples from Beijing Guanting reservoir
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Screening 31 endocrine-disrupting pesticides in water and surface sediment samples from Beijing Guanting reservoir Screening 31 endocrine-disrupting pesticides in water and surface sediment samples from Beijing Guanting reservoir](/preview/png/9451502.png)
چکیده انگلیسی
For screening 31 potential or suspected endocrine-disrupting pesticides in water and surface sediments, a multiresidue analysis method based on gas chromatography with electron capture detection (GC/ECD) was developed. Solid phase extraction (SPE) technology with Oasis® HLB cartridge was also applied in sample extraction. The relevant mean recoveries were 70-103% and 71-103% for water and sediment, respectively. Relative standard deviations (RSD) are 2.0-7.0%, 4.0-8.0% for water and sediment, respectively. Thirty one pesticides (α-HCH, β-HCH, γ-HCH, δ-HCH, hexachlorobenzene (HCB), aldrin, heptachlor, endosulfan I & II, p,pâ²-DDD, o,pâ²-DDT, p,pâ²-DDT, p,pâ²-DDE, endrin aldehyde, endosulfan sulphate, methoxychlor, hepachlor epoxide, α-chlordane, γ-chlordane, dieldrin, endrin, dicofol, acetochlor, alachlor, metolachlor, chlorpyriphos, nitrofen, trifluralin, cypermethrin, fenvalerate, deltamethrin) in water and surface sediment samples from Beijing Guanting reservoir were analyzed. Concentrations of pesticides ranged from 7.59 to 36.0 ng gâ1 on a dry wt. basis for sediment samples, from 279.3 to 2740 ng lâ1 for pore waters and from 48.8 to 890 ng lâ1 for water samples, respectively, with a mean concentration of 10.7 ng gâ1 in sediment, 735 ng lâ1 in pore water and 295 ng lâ1 in water, respectively. The data obtained provides information on the levels and sources of endocrine-disrupting pesticides in Guanting reservoir. These results underscore the need to improved environmental protection measures in order to reduce the exposure of the population and aquatic biota to these endocrine-disrupting compounds.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 61, Issue 11, December 2005, Pages 1594-1606
Journal: Chemosphere - Volume 61, Issue 11, December 2005, Pages 1594-1606
نویسندگان
Nandong Xue, Xiaobai Xu, Zuliang Jin,