Preconcentr ation and speciation of chro mium spe cies in env ironmental water an d food samples usi ng a novel magnetic activated carbonnan ocomposite couple d with FAAS

سال انتشار: 1391
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 71

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شناسه ملی سند علمی:

ISPTC15_0846

تاریخ نمایه سازی: 11 دی 1400

چکیده مقاله:

Chrom ium is mainly present as Cr(III) a nd Cr(VI) oxidation states. The p roperties of these species are very different fro m a chemical and toxicological points of view [ ۱]. Determin ation of chromium spec ies is prefe rred by AA S due to its simplicity and its lowe r cost compare to other instrumental techniques, but due to its low detection limit, a preconcentration ste p for trace levels of element would be need ed. Among various me thods, SPE has found very important place in speciation studies of m etal ions d ue to its simplicity, selectivity, flexi bility and rapid phase se paration. In SPE proced ures, the choice of the s orbent is a key point because it can control the analytical p arameters such as selectivity, affinity and capacity [۲]. Ma gnetic nanocomposites, have gaine d more atte ntion in a nalytical at omic spectrometry for trace analysis and speciation research owing to its suitability for bulk solution, easy control and fast magne tic separati on under an extra magne tic field [۳].

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نویسندگان

s Mohajer

Department of chemistry, Faculty of scie nces, Ferdows i university of Mashhad, Mashhad, Iran

m chamsaz

Department of chemistry, Faculty of scie nces, Ferdows i university of Mashhad, Mashhad, Iran

m.h entezari

Department of chemistry, Faculty of scie nces, Ferdows i university of Mashhad, Mashhad, Iran

t rohani bastami

Department of chemistry, Faculty of scie nces, Ferdows i university of Mashhad, Mashhad, Iran

n taheri

Department of chemistry, Faculty of scie nces, Ferdows i university of Mashhad, Mashhad, Iran