ارزیابی تأثیر کمپوست پسماند شهری در کاهش تجمع سرب در رژیم غذایی و اندام‌های حیوانات

حسین‌نیایی, صادق; جعفری, محمد; طویلی, علی; زارع, سلمان

doi:10.22038/jreh.2024.23858

نوع مقاله : مقالات پژوهشی

نویسندگان

گروه احیاء مناطق خشک و کوهستانی، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران.

https://doi.org/10.22038/jreh.2024.23858

چکیده

زمینه و هدف: نگرانی‌های عمومی درباره تأثیر آلاینده‌های محیطی بر سلامت انسان منجر به افزایش توجه به وجود مواد سمی در رژیم غذایی انسان و حیوان در دهه‌های گذشته شده است. هدف از مطالعه حاضر ارزیابی تأثیر کمپوست پسماند شهری بر کاهش غلظت فلز سرب در رژیم غذایی و اندام‌های نشخوارکنندگان چراکننده می‌باشد.

مواد و روش‌ها: در یک آزمایش گلخانه‌ای کمپوست در چهار سطح 0، 1، 3 و 5 درصد وزنی به یک خاک معدنی آلوده به سرب اضافه شد و به مدت شش ماه گیاه Stipa arabica (استیپا) در آن کشت داده شد. بعد از برداشت گیاه، غلظت سرب خاک و ریشه و شاخساره با استفاده از دستگاه ICP-OES مشخص شد. سپس میزان دریافت روزانه سرب توسط گاو و گوسفند و غلظت آن‌ در اندام‌ها بر اساس مدل‌های زنجیره غذایی تعیین و با استانداردهای اتحادیه اروپا در رابطه با کیفیت محصولات حیوانی از دیدگاه سلامت حیوان و امنیت غذایی برای انسان به عنوان حد بحرانی مقایسه شد.

یافته‌ها: نتایج نشان داد که کمپوست توانست با کاهش 65 و 60 درصدی به ترتیب برای گاو و گوسفند، دریافت روزانه سرب را به حد مجاز از دیدگاه سلامت حیوان برساند. تجمع سرب در اندام‌ها به صورت کلیه > کبد > گوشت بود که با اعمال کمپوست تا % 64/77 کاهش یافت و از لحاظ سلامت حیوان غلظت سرب در همه اندام‌ها به حد ایمن کاهش پیدا کرد و از دیدگاه امنیت غذایی غلظت آن را برای مصرف گوشت توسط انسان به کمتر از مقدار استاندارد رساند.

نتیجه‌گیری: کمپوست پسماند شهری به عنوان یک بهساز آلی می‌تواند به طور معنی‌داری غلظت سرب در رژیم غذایی و بافت‌های حیوانات را کاهش دهد و آن را به حد مجاز برساند.

کلیدواژه‌ها

عنوان مقاله [English]

Evaluation of the effect of municipal waste compost in reducing lead accumulation in animal diet and organs

نویسندگان [English]

Sadegh Hosseinniaee
Mohammad Jafari
Ali Tavili
Salman Zare

Department of reclamation of arid and mountainous regions, natural resources faculty, University of Tehran, Karaj, Iran

چکیده [English]

Background and Purpose: Public concern over the effects of environmental pollutants on human health has intensified, prompting heightened scrutiny of toxic substances in human and animal diets over recent decades. This study aims to assess the impact of municipal waste compost on diminishing lead (Pb) concentrations in the diets and organs of grazing ruminants.

Materials and Methods: In a controlled greenhouse experiment, compost was incorporated into naturally Pb-contaminated soil at four concentrations: 0%, 1%, 3%, and 5% (w/w). Stipa arabica plants were cultivated over six months. Subsequently, the Pb content in soil and plants was measured using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The daily Pb intake by cattle and sheep and its accumulation in their organs were then calculated using food chain models. These findings were evaluated against EU standards for animal product quality, focusing on animal health and human food safety.

Results: The study identified the 1% compost addition as the most effective concentration, reducing Pb intake by 65% in cows and 60% in sheep, aligning with permissible health standards. Lead accumulation in the organs followed the pattern of kidneys > liver > muscle tissue, with a 64.77% decrease observed upon compost application. The Pb levels in all tested organs were lowered to safe thresholds concerning animal health. Moreover, Pb concentrations in meat fell below the standard limits, ensuring food safety for human consumption.

Conclusion: Municipal waste compost, as an organic amendment, can significantly lower lead concentrations in the diets and tissues of grazing animals, ensuring levels remain within acceptable limits.

کلیدواژه‌ها [English]

Lead
Municipal waste compost
Health risk
Grazing ruminants
Stipa arabica

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مجله پژوهش در بهداشت محیط

ارزیابی تأثیر کمپوست پسماند شهری در کاهش تجمع سرب در رژیم غذایی و اندام‌های حیوانات

مراجع

مراجع

دوره 9، شماره 4 - شماره پیاپی 36
اسفند 1402
صفحه 387-402

ارزیابی تأثیر کمپوست پسماند شهری در کاهش تجمع سرب در رژیم غذایی و اندام‌های حیوانات

مراجع

مراجع

دوره 9، شماره 4 - شماره پیاپی 36اسفند 1402صفحه 387-402

دوره 9، شماره 4 - شماره پیاپی 36
اسفند 1402
صفحه 387-402