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Iranian Journal of Chemistry and Chemical Engineering، جلد ۳۶، شماره ۳، صفحات ۹۷-۱۰۶
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عنوان انگلیسی Preconcentration and Determination of Lead for Trace Levels in Water and Wastewater Samples by Vortex-Assisted Microextraction Using TPAS as a New Synthetic Complexing Agent with Electrothermal Atomic Absorption Spectroscopy Detection
چکیده انگلیسی مقاله A simple and rapid solidified vortex assisted 1-undecanol based liquid-liquid microextraction technique was proposed for preconcentration of trace levels of lead ions. The extraction solvent (1-undecanol) was dispersed into the aqueous samples by the assistance of vortex agitator. 100 µL of 1-undecanol containing ethyl (2Z)-3-[(5-chloro-7-methyl[1,3]thiazolo[5,4-d]pyrimidin-2-yl)amino]-2-cyano-3-(methylsulfanyl)prop-2-enoate (TPAS) as a new chelating agent (0.1%w/v) was transferred to the water samples containing lead ions. The hydrophobic complex was extracted into 1-undecanol and the sample vial was cooled in an ice bath for 5 min.The solidified extract was transferred into a conical vial where it was melted immediately, and 20 µL of this solution was injected and analyzed by Graphite Furnace Atomic Absorption Spectrometry (GFAAS). Several variables such as sample pH, the concentration of TPAS, volume of 1-undecanol and extraction time were investigated in details and optimum conditions were obtained. Under the optimum conditions, the Limit Of Detection (LOD) was 0.02 µg L-1 for lead and Relative Standard Deviation (RSD %) for five replicate determinations of 1 µg/L of lead was 5.6%. The results for determination of lead in reference material, three samples of wastewater, well, tap, river and aqueduct water demonstrated the accuracy, recovery, and applicability of the presented method.
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نویسندگان مقاله حسنعلی مرادی |
department of chemistry, faculty of sciences, ferdowsi university of mashhad, mashhad, i.r. iran
سازمان اصلی تایید شده: دانشگاه فردوسی (Ferdowsi university)

حسین عشقی |
department of chemistry, faculty of sciences, ferdowsi university of mashhad, mashhad, i.r. iran
سازمان اصلی تایید شده: دانشگاه فردوسی (Ferdowsi university)

محمود چمساز |
department of chemistry, faculty of sciences, ferdowsi university of mashhad, mashhad, i.r. iran
سازمان اصلی تایید شده: دانشگاه فردوسی (Ferdowsi university)

ابوالفضل درودی |
department of chemistry, faculty of samen hojaj, technical and vocational university, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه فنی و حرفه ای (Vocational university)

فاطمه دوستی |
department of environmental protection dep of razavi khorasan province, mashhad, i.r. iran

عیسی ذاکری مفرد | zakeri mofrad
department of chemistry, faculty of samen hojaj, technical and vocational university, tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه فنی و حرفه ای (Vocational university)

نشانی اینترنتی http://www.ijcce.ac.ir/article_28067_0274a097df55d9d3cc9d60ab60b2016b.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/444/article-444-485039.pdf
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زبان مقاله منتشر شده en
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