Electro-driven extraction of inorganic anions from water samples and water miscible organic solvents and analysis by ion chromatography.
作者： Saeed Nojavan , Tina Bidarmanesh , Farkhondeh Memarzadeh , Soheila Chalavi
关键词:
摘要: A simple electromembrane extraction (EME) procedure combined with ion chromatography (IC) was developed to quantify inorganic anions in different pure water samples and miscible organic solvents. The parameters affecting performance, such as supported liquid membrane (SLM) solvent, time, pH of donor acceptor solutions, voltage were optimized. optimized EME conditions follows: 1-heptanol used the SLM time 10 min, pHs solutions 7, respectively, 15 V. mobile phase for IC a combination 1.8 mM sodium carbonate 1.7 bicarbonate. Under these conditions, all had enrichment factors ranging from 67 117 RSDs between 7.3 13.5% (n = 5). Good linearity values 2 1200 ng/mL coefficients determination (R(2) ) 0.987 0.999 obtained. LODs EME-IC method ranged 0.6 7.5 ng/mL. applied evaluate feasibility real applications.
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