کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4416299 1307776 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of oxalate and phosphate on the release of arsenic from contaminated soils and arsenic accumulation in wheat
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Effects of oxalate and phosphate on the release of arsenic from contaminated soils and arsenic accumulation in wheat
چکیده انگلیسی

Oxalate is exuded by plants in the rhizosphere and plays an important role in the soil/root interactions. Phosphate fertilizer is widely used all over the world and may influence the behavior of arsenic (As) in soils. In this study oxalate and phosphate were used as extractants to investigate their effects on the release of As from three As-contaminated soils and the chemical speciation of As. Concentrations of arsenite (As(III)) and arsenate (As(V)) released progressively increased by increasing the concentrations of oxalate or phosphate. The released As(V) content was higher than that of As(III) and the differences between As(V) and As(III) released by oxalate was more obvious than by phosphate. Greenhouse experiment was conducted to evaluate the effects of oxalate and phosphate on As uptake by wheat (Triticum vulgare L.). Addition of oxalate or phosphate resulted in the increase of As accumulation in both wheat root and shoot and the effect of phosphate was more obvious than that of oxalate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 65, Issue 8, November 2006, Pages 1281–1287
نویسندگان
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