کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4412593 1307644 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impact of non-ideal sorption on low-concentration tailing behavior for atrazine transport in two natural porous media
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Impact of non-ideal sorption on low-concentration tailing behavior for atrazine transport in two natural porous media
چکیده انگلیسی

The impact of non-ideal sorption on atrazine transport was investigated for two sandy porous media with 0.38% and 0.03% organic-carbon contents. In contrast to prior investigations, effluent atrazine concentrations were monitored over a range of five orders of magnitude to examine long-term elution behavior. As characterized by batch-experiments, atrazine experienced nonlinear sorption for both media. The results of the column experiments showed that atrazine exhibited extensive elution tailing (delayed approach to relative concentration of zero). This non-ideal transport was more pronounced for the medium with higher organic-carbon content. A mathematical model incorporating nonlinear, rate-limited sorption/desorption described by a continuous-distribution function was used to successfully simulate atrazine transport.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 77, Issue 6, October 2009, Pages 877–882
نویسندگان
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