کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5750306 1619696 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transformation and toxicity assessment of two UV filters using UV/H2O2 process
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Transformation and toxicity assessment of two UV filters using UV/H2O2 process
چکیده انگلیسی


- BP3's derivatives BP4 and BP9 was treated using UV/H2O2 process.
- Degradation intermediates are identified by advanced LTQ-Orbitrap and GC/MS.
- Degradation mechanisms of BP4 and BP9 are also proposed.
- Toxicity prediction and assessment indicate higher bio-toxicity of intermediates.

The treatment of two typical UV filters benzophenone-4 (BP4) and benzophenone-9 (BP9) was evaluated in aqueous solutions by UV/H2O2 process. High-resolution accurate mass spectrometry (HRMS) was used to identify the degradation intermediates. A total of 12 BP4 degradation products and 17 BP9 degradation products were identified. A series of OH-initiated reactions, including hydroxylation, dihydroxylation, decarboxylation, demethylation, and ring breaking, lead to the final mineralization of BP4 and BP9. The degradation mechanisms of BP4 and BP9 are also proposed, separately. Toxicity prediction and assessment indicate that the bio-toxicity of the intermediates is higher, even if the parent compounds are completely transformed. It is necessary to further assess the environmental risk of BP4, BP9 and their intermediates in engineered systems and ambient aquatic environments.

BP4 and BP9 and their intermediates.329

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Science of The Total Environment - Volumes 603–604, 15 December 2017, Pages 361-369
نویسندگان
, , , , ,