کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9451717 | 1618881 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Screening of organic halogens and identification of chlorinated benzoic acids in carbonaceous meteorites
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Screening of organic halogens and identification of chlorinated benzoic acids in carbonaceous meteorites Screening of organic halogens and identification of chlorinated benzoic acids in carbonaceous meteorites](/preview/png/9451717.png)
چکیده انگلیسی
The occurrence of halogenated organic compounds measured as a sum parameter and the evidence of chlorinated benzoic acids in four carbonaceous meteorites (Cold Bokkeveld, Murray, Murchison and Orgueil) from four independent fall events is reported. After AOX (Adsorbable organic halogen) and EOX (Extractable organic halogen) screening to quantify organically bound halogens, chlorinated organic compounds were analyzed by gas chromatography. AOX concentrations varying from 124 to 209 μg Cl/g d.w. were observed in carbonaceous meteorites. Ion chromatographic analysis of the distribution of organically bound halogens performed on the Cold Bokkeveld meteorite revealed that chlorinated and brominated organic compounds were extractable, up to 70%, whereas only trace amounts of organofluorines could be extracted. Chlorinated benzoic acids have been identified in carbonaceous meteorite extracts. Their presence and concentrations raise the question concerning the origin of halogenated, especially chlorinated, organic compounds in primitive planetary matter.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 60, Issue 11, September 2005, Pages 1505-1512
Journal: Chemosphere - Volume 60, Issue 11, September 2005, Pages 1505-1512
نویسندگان
Heinz F. Schöler, Gerard Nkusi, Volker W. Niedan, German Müller, Bianca Spitthoff,