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RISS 인기검색어
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- 저자 : S¸ erife Sac¸macı (검색결과 2 건)
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Cos¸ kun O¨ zdemir,S¸ erife Sac¸macı,SenolKartal,Mustafa Sac¸macı 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
A new dispersive liquid–liquid microextraction (DLLME) method is proposed for rapid separation,simultaneous extraction and preconcentration of gold and palladium at ultra trace amounts. Theextraction of the analytes was performed in the presence of 5-[(E)-(2,6-diaminopyridine-3-yl)diazenyl]-1,3,4-thiadiazole-2-thiol (DAT) as chelating agent. Chloroform and acetone were used as extraction anddispersive solvents, respectively. The variables affecting the complexation and extraction conditionswere optimized. The calibration curves were linear in the range of 1.1–85 and 0.9–124 mg L-1 with thedetection limits of 0.4 and 0.6 mg L-1, and with the enrichment factors of 94 and 113 for Au and Pd,respectively. The precision (RSD%) was better than 2.4%. The accuracy of the method was verified byanalysing the certified standard reference material (CDN–PGMS-10). The results show that thedispersive liquid–liquid microextraction pretreatment is a sensitive, rapid, simple and safe method forthe separation/preconcentration of gold and palladium.
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Teslima Das¸ bas¸ ı,S¸ erife Sac¸macı,Ahmet U¨ lgen,SenolKartal 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.28 No.-
A simple and efficient dispersive liquid–liquid microextraction (DLLME) procedure was optimized forthe determination of Ag(I) by flame atomic absorption spectrometry (FAAS). In this method, 8-hydroxyquinoline was used as a chelating reagent for Ag(I) and resulted complex was extracted inchloroform, while ethanol is used as disperser solvent. The effective parameters on the recovery of Ag(I),such as the pH of sample, the type and volume of extraction and disperser solvents, the amount of 8-hydroxyquinoline reagent, extraction time, the effect of temperature and interfering ions of samplesolution were investigated. The calibration graph of this procedure was linear in the range of 0.02–0.4 mg L 1 with detection limit of 2.0 mg L 1 (n = 21). The relative standard deviation (RSD) was 4% andthe preconcentration factor was 65. Good recovery (%) values were obtained changing between 95 and102%. The certified reference material (CWW-TM-D waste water) was used to verify the accuracy of thedeveloped method (recovery, 96%). The proposed method was applied for determination of silver indifferent water samples, anode slime and cream samples.
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