کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5138951 1494858 2018 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of ultrasound-assisted sequential extraction procedure for potentially toxic element content of soils and sediments
ترجمه فارسی عنوان
بررسی روش استخراج ترتیبی با استفاده از سونوگرافی برای مقدار عناصر بالقوه سمی خاک و رسوبات
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
For risk assessment of potentially toxic element (PTE) pollution of sediments and soils the fractionation by sequential extraction procedures are applied which require longtime leaching-shaking periods to achieve the dissolution equilibria. In this work an attempt is described for reduction the duration these leaching-shaking periods of the sequential extraction procedure proposed by Community Bureau of Reference (BCR) in 1993 by application of ultrasonic treatment. The fractionation of PTE content of BCR 701 certified reference sample was performed in three experiments: “A” experiment was the control, all extraction steps were performed with 16 hours shaking according to the BCR prescription; “B” experiment: in each extraction step was applied 1 hour preliminary ultrasonic treatment and after this 1 hour shaking; “C” experiment: only 1 hour ultrasonic treatment and no shaking was applied. It was experienced that by ultrasonic treatment can be efficiently increased the rate of dissolution when constant temperature of assisting medium was kept. 77% and 63% of element content extractable with the control “A” experiment can be extracted in “B” and “C” experiments, respectively. To achieve the 100% efficiency further experiments are in process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 136, January 2018, Pages 80-84
نویسندگان
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