کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6312237 | 1618963 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Analysis of HCHs and DDTs in a sediment core from the Old Yellow River Estuary, China
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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: Analysis of HCHs and DDTs in a sediment core from the Old Yellow River Estuary, China Analysis of HCHs and DDTs in a sediment core from the Old Yellow River Estuary, China](/preview/png/6312237.png)
چکیده انگلیسی
The present study analyzed the distribution of HCHs and DDTs in a sediment core from the Old Yellow River Estuary, China. The OCP levels were detected by Soxhlet extraction followed by gas chromatography (GC) using a mass-selective detector. Sediment age was analyzed for 210Pb using an Ortec GWL HPGe gamma spectrometer. The results indicated that the concentrations of âDDT in the sediment core were much lower than those of âHCH. Compared with the other estuarine and coastal regions in Chinese rivers, HCHs levels in this area were higher or similar, while DDTs levels were lower. The compositional analysis indicated that β-HCH and p, p'-DDD were the predominant species. The temporal trends indicated that levels of HCHs and DDTs were related with their historical usage, emission and soil residues. According to the analysis of the ratio, HCHs in this area was mainly due to the technical historical residue and recent lindane. DDTs was mainly due to historical residue. The biodegradation conditions for DDTs were anaerobic. The dicofol-type DDTs application occurred in this area.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 100, February 2014, Pages 171-177
Journal: Ecotoxicology and Environmental Safety - Volume 100, February 2014, Pages 171-177
نویسندگان
Chunnian Da, Guijian Liu, Zijiao Yuan,