Extraction of ultra trace of Co(II) in water samples using dispersive liquid–liquid microextraction with N N-bis 2-hydroxy-5-bromo-benzyl 1 2- diaminopropane and determination by GF-AAS

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 Extraction of ultra trace of Co(II) in water samples using dispersive liquid–liquid microextraction with N N-bis 2-hydroxy-5-bromo-benzyl 1 2- diaminopropane and determination by GF-AAS دارای ۱۸ صفحه می باشد و دارای تنظیمات در microsoft word می باشد و آماده پرینت یا چاپ است

فایل ورد Extraction of ultra trace of Co(II) in water samples using dispersive liquid–liquid microextraction with N N-bis 2-hydroxy-5-bromo-benzyl 1 2- diaminopropane and determination by GF-AAS  کاملا فرمت بندی و تنظیم شده در استاندارد دانشگاه  و مراکز دولتی می باشد.

توجه : در صورت  مشاهده  بهم ریختگی احتمالی در متون زیر ،دلیل ان کپی کردن این مطالب از داخل فایل ورد می باشد و در فایل اصلی Extraction of ultra trace of Co(II) in water samples using dispersive liquid–liquid microextraction with N N-bis 2-hydroxy-5-bromo-benzyl 1 2- diaminopropane and determination by GF-AAS،به هیچ وجه بهم ریختگی وجود ندارد

بخشی از متن Extraction of ultra trace of Co(II) in water samples using dispersive liquid–liquid microextraction with N N-bis 2-hydroxy-5-bromo-benzyl 1 2- diaminopropane and determination by GF-AAS :

تعداد صفحات :۱۸

چکیده مقاله:

DLLME technique was successfully used as a sample preparation method for GF AAS . NADP (chelating agent) was rapidly injected by syringe into the water sample containing Cobalt ions (interest analyte).At this stage, Cobalt reacts with NBDP , and therefore, hydrophobic complex forms which is extracted into the fine droplets of carbon tetrachloride. Some effective parameters, such as extraction and disperser solvent type and their volume, extraction time, salt effect, pH and concentration of the chelating agent have been optimized. Under the optimum conditions, the enrichment factor 122 was obtained from only 5.00mL of water sample. The detection limit was of 0.7 ng L1. The R.S.D.s for ten replicate measurements of 20 ng L1 of Cobalt was 3.2%.