کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4979854 1367815 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Zinc oxide nanoparticles affect carbon and nitrogen mineralization of Phoenix dactylifera leaf litter in a sandy soil
ترجمه فارسی عنوان
نانوذرات اکسید روی بر کانه زایی کربن و نیتروژن خاکستر برگ فینیکس دکتیلفر در خاک ماسه تاثیر می گذارند
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی
We investigated the impact of zinc oxide nanoparticles (ZnO NPs; 1000 mg kg−1 soil) on soil microbes and their associated soil functions such as date palm (Phoenix dactylifera) leaf litter (5 g kg−1 soil) carbon and nitrogen mineralization in mesocosms containing sandy soil. Nanoparticles application in litter-amended soil significantly decreased the cultivable heterotrophic bacterial and fungal colony forming units (cfu) compared to only litter-amended soil. The decrease in cfu could be related to lower microbial biomass carbon in nanoparticles-litter amended soil. Likewise, ZnO NPs also reduced CO2 emission by 10% in aforementioned treatment but this was higher than control (soil only). Labile Zn was only detected in the microbial biomass of nanoparticles-litter applied soil indicating that microorganisms consumed this element from freely available nutrients in the soil. In this treatment, dissolved organic carbon and mineral nitrogen were 25 and 34% lower respectively compared to litter-amended soil. Such toxic effects of nanoparticles on litter decomposition resulted in 130 and 122% lower carbon and nitrogen mineralization efficiency respectively. Hence, our results entail that ZnO NPs are toxic to soil microbes and affect their function i.e., carbon and nitrogen mineralization of applied litter thus confirming their toxicity to microbial associated soil functions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 324, Part B, 15 February 2017, Pages 298-305
نویسندگان
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