کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6330728 | 1619785 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sorption determination of phenols and polycyclic aromatic hydrocarbons in a multiphase constructed wetland system by solid phase microextraction
ترجمه فارسی عنوان
تعیین جذب فنل ها و هیدروکربن های آروماتیک چند حلقه ای در یک سیستم چند منظوره تالاب با استفاده از میکرو اکستراسیون فاز جامد
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
فیزیوتراپی، جذب ریشه، مفهوم حلالیت، فنل ها، هیدروکربن های آروماتیک چند حلقه،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Non-degradative sorption of organic pollutants onto plant roots during phytoremediation is an essential retardation mechanism. To determine the extent of the attenuation processes the freely dissolved concentrations of organic solutes must be determined rather than their total concentrations. Thus, the assessment of attenuation caused by sorption onto plant compartments can be biased when using traditional methods. This bias holds especially true in cases of complex multiphase systems characterized by high concentrations of dissolved and suspended organic matter, both of them contributing to a reduction in concentration of the free solutes. A relatively new approach based on solid phase microextraction (SPME) circumvents these obstacles. SPME measures the true freely dissolved concentration of organic solutes without affecting the sorption equilibrium, thus allowing non-biased conclusions about ecotoxicological hazards of organic sorbates. Herein, sorption of phenols (including alkylated phenols) along with polycyclic aromatic hydrocarbons (PAHs) onto roots of Juncus effusus was investigated. Sorption coefficients in the complex system measured with SPME were significantly higher compared to those measured by traditional methods such as phase separation and solvent extraction. A concept based on Hildebrand solubility parameters was applied to interpret and predict sorption onto helophyte roots. The solubility parameter of the root sorbent was calculated as 26.1 (J cmâ 3)0.5, which is between that of lignin and cellulose/hemicellulose.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 482â483, 1 June 2014, Pages 234-240
Journal: Science of The Total Environment - Volumes 482â483, 1 June 2014, Pages 234-240
نویسندگان
Juergen Poerschmann, Luciana Schultze-Nobre,