title: Rapid analysis of phthalic acid esters in environmental water using fast elution gas chromatography with mass spectrometry and adaptive library spectra.
abstract: A method for the fast determination of the components in a complex sample by using gas chromatography with mass spectrometry was developed and used for the quantitative analysis of phthalic acid esters in environmental water. In the method, the adaptively corrected mass spectra were used to compensate for the differences between the library spectra and the measured ones in the experiment. The correction was obtained by the iterative transformation of the library spectra using iterative target transformation factor analysis, and the resolution was performed by non-negative immune algorithm using the corrected spectra. Rapid analysis of 16 phthalic acid esters in water samples was achieved using fast elution gas chromatography with mass spectrometry measurements. The results show that the mass spectra and chromatographic profiles of the phthalic acid esters can be obtained from the overlapping signal of 13 min elution, and accurate quantitative analysis can be obtained. The recoveries of the phthalic acid esters obtained by standard addition are between 90.3 and 107.4%, and the relative standard deviations obtained in repeated measurements are less than 9%.
authors.affiliation: Collaborative Innovation Center of Chemical Science and Engineering, State Key Laboratory of Medicinal Chemical Biology, and Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, China.
authors.forename: Pao
authors.initials: P
authors.lastname: Li
authors.forename: Zhen
authors.initials: Z
authors.lastname: Mei
authors.forename: Wensheng
authors.initials: W
authors.lastname: Cai
authors.forename: Xueguang
authors.initials: X
authors.lastname: Shao
mesh_terms: D004952:Esters / Q000032:analysis* / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010795:Phthalic Acids / Q000032:analysis* / Q000302:isolation & purification; D052616:Solid Phase Extraction; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000302:isolation & purification
chemical_list: D004952:Esters; D010795:Phthalic Acids; D014874:Water Pollutants, Chemical
keywords: Adaptive library spectra; Gas chromatography-mass spectrometry; Iterative target transformation factor analysis; Phthalic acid esters; Rapid analysis