کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6317695 | 1619192 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Covalent bonding of chloroanilines to humic constituents: Pathways, kinetics, and stability
ترجمه فارسی عنوان
پیوند کووالانتی کلروآینیلین ها با ترکیبات هومیک: مسیر، سینتیک، و پایداری
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کلمات کلیدی
کلروآنیلین، باقی مانده، پراکسیداز هوررودیس،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Covalent coupling to natural humic constituents comprises an important transformation pathway for anilinic pollutants in the environment. We systematically investigated the reactions of chlorine substituted anilines with catechol and syringic acid in horseradish peroxidase (HRP) catalyzed systems. It was demonstrated that although nucleophilic addition was the mechanism of covalent bonding to both catechol and syringic acid, chloroanilines coupled to the 2 humic constituents via slightly different pathways. 1,4-addition and 1,2-addition are involved to catechol and syringic acid, respectively. 1,4-addition showed empirical 2nd order kinetics and this pathway seemed to be more permanent than 1,2-addition. Stability experiments demonstrated that cross-coupling products with syringic acid could be easily released in acidic conditions. However, cross-coupling with catechol was relatively stable at similar conditions. Thus, the environmental behavior and bioavailability of the coupling products should be carefully assessed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 180, September 2013, Pages 48-54
Journal: Environmental Pollution - Volume 180, September 2013, Pages 48-54
نویسندگان
Deyang Kong, Qing Xia, Guoqiang Liu, Qingguo Huang, Junhe Lu,