Journal of Chromatographic Science Advance Access published June 25, 2014 Journal of Chromatographic Science 2014;1– 7 doi:10.1093/chromsci/bmu058
Article
Magnetic Solid-Phase Extraction Based on Modified Magnetic Nanoparticles for the Determination of Phthalate Diesters in Water Samples Maryam Zare Jeddi1, Reza Ahmadkhaniha2, Masud Yunesian1,3 and Noushin Rastkari3* 1
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Department of Human Ecology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, and 3Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
2
*Author to whom correspondence should be addressed. Email: [email protected] Received 7 May 2013; revised 5 May 2014
A method was developed for the extraction of phthalic acid esters (PAEs) from bottled water. Surface-functionalized magnetic particles (MPs) were used as adsorbent of magnetic solid-phase extraction (MSPE). The MPs were prepared by using both polydimethylsiloxane and multiwalled carbon nanotubes. By coupling the developed MSPE with GC – MS instrument, a reliable, sensitive and cost-effective method for the simultaneous determination of six main PAEs including dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP), butyl benzyl phthalate, di-n-octyl phthalate and bis(2ethylhexyl) phthalate (DEHP) was developed. Under optimized conditions, the LODs and limits of quantification were in the range of 0.01– 0.025 and 0.025 – 0.05 mg/L, respectively. The calibration curves were linear (r 2 0.992) over the concentration ranges from 0.05 to 20 mg/L. Based on the intra- and interday precision values with overall RSD 12.40%, the method reproducibility was adequate. The recovery values of the six PAEs ranged from 91.5 to 97.8% with the RSDs
Article
Magnetic Solid-Phase Extraction Based on Modified Magnetic Nanoparticles for the Determination of Phthalate Diesters in Water Samples Maryam Zare Jeddi1, Reza Ahmadkhaniha2, Masud Yunesian1,3 and Noushin Rastkari3* 1
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, Department of Human Ecology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran, and 3Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
2
*Author to whom correspondence should be addressed. Email: [email protected] Received 7 May 2013; revised 5 May 2014
A method was developed for the extraction of phthalic acid esters (PAEs) from bottled water. Surface-functionalized magnetic particles (MPs) were used as adsorbent of magnetic solid-phase extraction (MSPE). The MPs were prepared by using both polydimethylsiloxane and multiwalled carbon nanotubes. By coupling the developed MSPE with GC – MS instrument, a reliable, sensitive and cost-effective method for the simultaneous determination of six main PAEs including dimethyl phthalate (DMP), diethyl phthalate (DEP), dibutyl phthalate (DBP), butyl benzyl phthalate, di-n-octyl phthalate and bis(2ethylhexyl) phthalate (DEHP) was developed. Under optimized conditions, the LODs and limits of quantification were in the range of 0.01– 0.025 and 0.025 – 0.05 mg/L, respectively. The calibration curves were linear (r 2 0.992) over the concentration ranges from 0.05 to 20 mg/L. Based on the intra- and interday precision values with overall RSD 12.40%, the method reproducibility was adequate. The recovery values of the six PAEs ranged from 91.5 to 97.8% with the RSDs
