NDLI: A New Dispersive Liquid-Liquid Microextraction Method Followed by Direct GF- AAS Determination Optimized with Experimental Design and Response Surface Methodology for Determination of Ag(I) in Water Samples

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A New Dispersive Liquid-Liquid Microextraction Method Followed by Direct GF- AAS Determination Optimized with Experimental Design and Response Surface Methodology for Determination of Ag(I) in Water Samples

Content Provider	Semantic Scholar
Author	Ghiasvand, Ali Reza Shadabi, Shahriar Hajipour, Somayeh Nasirian, Afagh
Copyright Year	2015
Abstract	In this research, a rapid, reliable and selective dispersive liquid-liquid microextraction (DLLME) followed by direct injection of microdroplet to graphite furnace atomic absorption spectrometry (GF-AAS) method for the determination of ultra-trace amounts of Ag(I) was developed. Effect of the important experimental parameters on the extraction efficiency of Ag(I) was investigated using response surface methodology (RSM) by performing a central composite design (CCD). A newly synthesized Calixarene (mesotetraspirocyclohexylcalix[4]pyrrole, TSCC4P) was utilized as the chelating agent. The optimal experimental condition was obtained as sample volume: 5 ml, dispersive solvent type: methanol, dispersive solvent volume: 715 μl, extracting solvent: 1,2-dichlorobenzene, volume of extracting solvent: 25 μl, amount of TSCC4P: 127.1 μg, and pH of sample solution: 6.5. Under the optimum conditions Ag(I) ions were extracted into a fine sedimented microdroplet, which 10 μl of it was directly injected into GF-AAS system. The calibration graph was linear over the range of 0.1-10.0 ng ml with a detection limit (S/N = 3) of 0.02 ng ml. The relative standard deviation (RSD%) for ten replicated determinations of 10 ng ml Ag(I) was 3.1%. The enrichment factor and extraction recovery were found to be 292 and 96%, respectively. The proposed DLLME-GF-AAS method was successfully applied to the extraction and determination of Ag(I) ions in different real water samples.
Starting Page	60
Ending Page	71
Page Count	12
File Format	PDF HTM / HTML
DOI	10.22036/abcr.2015.9817
Volume Number	2
Alternate Webpage(s)	http://www.analchemres.org/article_9817_7d34c0a103f8a303efb9c637c0f04195.pdf
Alternate Webpage(s)	https://doi.org/10.22036/abcr.2015.9817
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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