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Analytical and Bioanalytical Chemistry Research، جلد ۱۱، شماره ۱، صفحات ۴۱-۵۰
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عنوان انگلیسی Combining Dispersive Solid Phase Extraction-dispersive Liquid-liquid Microextraction Using Walnut Green Husk as an Efficient Adsorbent for the Extraction of Lead and Cadmium Ions from Oil Samples Prior to Flame Atomic Absorption Spectrometry
چکیده انگلیسی مقاله In this work, walnut green husk has been used as a simple, cheap, biodegradable, and efficient adsorbent in dispersive solid phase extraction of Cd (II) and Pb (II) ions from some oil samples including edible, fish oil, and butter. In the next step, a dispersive liquid-liquid microextraction method was used to enrich the extracted analytes before their analysis with flame atomic absorption spectrometry. For this purpose, the adsorbent was obtained from agricultural wastes, dried in an isolated environment at ambient temperature, and mechanically ground to obtain a homogeneous powder. The parameters affecting the efficiency of the method were optimized. Low detection limits (0.12 and 0.32 µg L-1 for Cd (II) and Pb (II), respectively), low relative standard deviations (3.8% and 4.2% for Cd (II) and Pb (II), respectively) and determination coefficients close to 1 (0.991 and 0.995 for Cd (II) and Pb (II), respectively) were achieved. Also, the extraction recoveries for the target analytes were 89 and 96% for Cd (II) and Pb (II), respectively.
کلیدواژه‌های انگلیسی مقاله Heavy metal,Walnut green husk,Dispersive solid phase extraction,Dispersive liquid-liquid microextraction,Flame atomic absorption spectrometry,Oil
نویسندگان مقاله Aysan Changhizi |
Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

Saeed Mohammad Sorouraddin |
Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

Mir Ali Farajzadeh |
Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran. Engineering Faculty, Near East University, 99138 Nicosia, North Cyprus, Mersin 10, Turkey

Ali Akbar Fathi |
Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

نشانی اینترنتی https://www.analchemres.org/article_182546_96b89c2306852e4d436a9c651b0e9c8e.pdf
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