کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4414790 | 1307726 | 2007 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Occurrence and distribution of novel botryococcene hydrocarbons in freshwater wetlands of the Florida Everglades
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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: Occurrence and distribution of novel botryococcene hydrocarbons in freshwater wetlands of the Florida Everglades Occurrence and distribution of novel botryococcene hydrocarbons in freshwater wetlands of the Florida Everglades](/preview/png/4414790.png)
چکیده انگلیسی
A high abundance of isoprenoid hydrocarbons, the botryococcenes, with carbon numbers from 32 to 34 were detected in the Florida Everglades freshwater wetlands. These compounds were present in varying amounts up to 106 μg/gdw in periphyton, 278 μg/gdw in floc, and 46 μg/gdw in soils. Their structures were determined based on comparison to standards, interpretation of their mass spectra and those of their hydrogenation products, and comparison of Kovats indexes to those reported in the literature. A total of 26 cyclic and acyclic botryococcenes with 8 skeletons were identified, including those with fewer degrees of unsaturation, which are proposed as early diagenetic derivatives from the natural products. This is the first report that botryococcenes occur in the Everglades freshwater wetlands. Their potential biogenetic sources from green algae and cyanobacteria were examined, but neither contained botryococcenes. Thus, the source implication of botryococcenes in this ecosystem needs further study.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 70, Issue 2, December 2007, Pages 224-236
Journal: Chemosphere - Volume 70, Issue 2, December 2007, Pages 224-236
نویسندگان
Min Gao, Bernd R.T. Simoneit, Miroslav Gantar, Rudolf Jaffé,