کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6308953 | 1618857 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Historical trends of inorganic and organic fluorine in sediments of Lake Michigan
ترجمه فارسی عنوان
روند رو به رشد فلوئور غیر آلی و آلی در رسوبات دریاچه میشیگان
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Total fluorine (TF), extractable organic fluorine (EOF) and poly- and per-fluorinated compounds (PFCs) were measured in eight dated cores of sediment taken along with 27 surface sediments from Lake Michigan in 2010. Based on rates of sedimentation, total concentrations of PFCs (âPFCs) reached a maximum in the later 1990s and early 2000s. This result is consistent with rapid changes in production and subsequent sedimentation. Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) are still the predominant PFCs in the cores, but in surface sediments, concentrations of perfluorobutane sulfonate (PFBS) and perfluorobutanoic acid (PFBA) are now occurring at concentrations comparable to those of PFOS and PFOA. This observation is consistent with shifts in patterns of production and use in the US and Canada. Concentrations of TF in sediments were greater than those of EOF. This result is consistent with a larger proportion of un-extractable fluorinated material in both surface sediments and in cores.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 114, November 2014, Pages 203-209
Journal: Chemosphere - Volume 114, November 2014, Pages 203-209
نویسندگان
Garry Codling, Anja Vogt, Paul D. Jones, Tieyu Wang, Pei Wang, Y.-L. Lu, Margaret Corcoran, Solidea Bonina, An Li, Neil C. Sturchio, Karl J. Rockne, Kyunghee Ji, Jong-Seong Khim, Jonathan E. Naile, John P. Giesy,