화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.24, 297-301, April, 2015
DOI10.1016/j.jiec.2014.09.045  Export Citation
Determination of trace silver in water, wastewater and ore samples using dispersive liquid-liquid microextraction coupled with flame atomic absorption spectrometry
Saadat Rastegarzadeh†, Nahid Pourreza, and Arash Larki
  • Department of Chemistry, College of Science, Shahid Chamran University, Ahvaz 6135743135, Iran
E-mail:
A fast and reliable dispersive liquid?liquid microextraction (DLLME) method for the determination of trace levels of silver by flame atomic absorption spectrometry (FAAS) was developed. The method is based on highly-efficient separation and preconcentration of silver by the complex formation of Ag(I) with 2-mercaptobenzimidazole and extracted by DLLME procedure using carbon tetrachloride as extraction and acetone as disperser solvent. After establishment of a cloudy solution, the phase separation is achieved and Ag(I) is determined in the enriched phase by FAAS. The method yields a linear calibration curve in the concentration range of 1-100 ng mL-1 of Ag(I), and the limit of detection is 0.41 ng mL-1. The proposed method was successfully applied to determine the trace amounts of silver in water, radiology film processing wastewater and ore samples.
Keywords:Silver;Dispersive liquid-liquid microextraction;2-Mercaptobenzimidazole
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