کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4424558 1619205 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fate of triclosan in field soils receiving sewage sludge
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Fate of triclosan in field soils receiving sewage sludge
چکیده انگلیسی

The anti-microbial substance triclosan can partition to sewage sludge during wastewater treatment and subsequently transfer to soil when applied to land. Here, we describe the fate of triclosan in a one-year plot experiment on three different soils receiving sludge. Triclosan and methyl-triclosan concentrations were measured in soil samples collected monthly from three depths. A large fraction of triclosan loss appeared to be explained by transformation to methyl-triclosan. After 12 months less than 20% of the initial triclosan was recovered from each soil. However, the majority was recovered as methyl-triclosan. Most of the chemical recovered at the end of the experiment (both triclosan and methyl-triclosan) was still in the top 10 cm layer, although there was translocation to lower soil horizons in all three soils. Between 16.5 and 50.6% of the applied triclosan was unaccounted for after 12 months either as a consequence of degradation or the formation of non-extractable residues.


► We study the fate of triclosan in 3 different field soils amended with biosolids.
► Triclosan concentrations were measured over 12 months at 3 depths of soil.
► Methyl-triclosan was identified as a main biotransformation product.
► There was very little movement of triclosan through the soil.
► Only between 16 and 50% of triclosan applied was degraded or leached out of the soil.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 167, August 2012, Pages 101–109
نویسندگان
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