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مقالات فارسیISIکنفرانسهاژورنالها

Comparison of three digestion methods for determination of lead and cadmium in milk and dairy products

محل انتشار: مجله مدیریت و مهندسی بهداشت محیط، دوره: 10، شماره: 2
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 93

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لینک ثابت به این مقاله:
https://civilica.com/doc/1634597

شناسه ملی سند علمی:

JR_EHEM-10-2_002

تاریخ نمایه سازی: 28 فروردین 1402

چکیده مقاله:

Background: Toxic metals enter the human food chain through water, soil, and plants. High consumption of dairy products makes it necessary to measure their concentrations in milk and its products. Methods: In this study, four samples of dairy products, including milk, dough, yogurt, and cream were selected. They were spiked with concentrations of ۰, ۲۰, ۴۰, and ۶۰ μg/kg of lead (Pb) and cadmium (Cd) separately. In all samples, the concentration of these metals was determined using graphite furnace atomic absorption spectroscopy (GFAAS) after microwave, wet, and dry ashing digestion methods. To select the best digestion method, recovery percentage, linearity of increasing concentrations, relative standard deviation (RSD), and the limit of detection were used. Results: According to the results, the RSD of all measurements was less than ۵%. The instrument detection limit for Pb and Cd were ۰.۱۸۸ and ۰.۱۵۷ μg/L, respectively. The recovery efficiency of all digested samples by three methods was between ۷۵.۷% and ۱۲۰%. According to the linearity index and R۲, the microwave digestion method with ۹۰ to ۱۱۰% efficiency was the best for Pb-spiked samples, and the dry digestion method was the best for Cd spiked samples. Conclusion: Considering all indexes, microwave digestion was the best method for Pb and Cd samples.

کلیدواژه ها:

Milk ، Cadmium ، Lead ، Digestion ، Spectrophotometry

نویسندگان

Mohammad Reza Mehrasebi

Department of Environmental Health, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran

Mazyar Peyda

Department of Environmental Health, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran

Rezgar Feizolahi

Department of Environmental Health, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran

Azra Taromi

Department of Environmental Health, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran

Pegah Homayuni

Department of Environmental Health, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran

Sara Fathi

Department of Environmental Health, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran

Zohre Farahmandkia

Corresponding author: Department of Environmental Health, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran

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