کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4415193 1307738 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Total and partial digestion of sediments for the evaluation of trace element environmental pollution
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Total and partial digestion of sediments for the evaluation of trace element environmental pollution
چکیده انگلیسی

Four different sample treatment methods for the determination of trace elements have been compared: a total digestion with HNO3–H2O2–HF using microwave, and three different standardized methods of fractionation: BCR three-steps sequential extraction, USEPA standard 3050B and ISO standard 11466.The four treatment methods were applied to the determination of Cu and Ni in four samples collected in different areas of Cienfuegos Bay (Cuba). The location of samples and the analytes were selected on the basis of results obtained by previous studies. Analyses following total digestion and BCR three-steps procedure were performed by inductively coupled plasma mass spectroscopy whereas analyses following EPA and ISO procedures were performed by flame atomic absorption spectroscopy. The results obtained have been compared with an estimated anthropic fraction evaluated in each sampling point as the difference between the total concentration and an estimated background concentration level. The BCR three-steps provided the best approximation of the estimated anthropic fraction and was therefore applied also in the determination of Pb and Cd for further consideration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 66, Issue 8, January 2007, Pages 1545–1553
نویسندگان
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