title: Coupling of multi-walled carbon nanotubes/polydimethylsiloxane coated stir bar sorptive extraction with pulse glow discharge-ion mobility spectrometry for analysis of triazine herbicides in water and soil samples.
abstract: An analytical method based on stir bar sorptive extraction (SBSE) coupled with pulse glow discharge-ion mobility spectrometry (PGD-IMS) was developed for analysis of three triazine pesticide residues in water and soil samples. An injection port with sealing device and stir bars hold device were designed and constructed to directly position the SBSE fiber including the extracted samples into the heating device, making desorption and detection of analytes proceeded simultaneously. The extraction conditions such as SBSE solid phase material, extraction time, extraction temperature, pH value and salt concentration were optimized. Mixture of MWCNTs-COOH and PDMS were shown to be effective in enriching the triazines. The LODs and LOQs of three triazines were found to be 0.006-0.015μgkg(-1) and 0.02-0.05μgkg(-1), and the linear range was 0.05-10μgL(-1) with determination coefficients from 0.9987 to 0.9993. The SBSE-PGD-IMS method was environmentally friendly without organic solvent consumption in the entire experimental procedures, and it was demonstrated to be a commendable rapid analysis technique for analysis of triazine pesticide residues in environmental samples on site. The proposed method was applied for the analysis of real ground water, surface water and soil samples.
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China.
authors.forename: Nan
authors.initials: N
authors.lastname: Zou
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China.
authors.forename: Chunhao
authors.initials: C
authors.lastname: Yuan
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China.
authors.forename: Shaowen
authors.initials: S
authors.lastname: Liu
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China.
authors.forename: Yongtao
authors.initials: Y
authors.lastname: Han
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China.
authors.forename: Yanjie
authors.initials: Y
authors.lastname: Li
authors.affiliation: Wuhan Syscan Technology Co. Ltd, Wuhan, 430040, China.
authors.forename: Jialei
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Wuhan Syscan Technology Co. Ltd, Wuhan, 430040, China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Xu
authors.affiliation: Institute of Pesticide & Environmental Toxicology, Guangxi University, Nanning, 530005, China.
authors.forename: Xuesheng
authors.initials: X
authors.lastname: Li
authors.affiliation: Beijing Advanced Innovation Center for Food Nutrition and Human Health, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing, 100193, China. Electronic address: canpingp@cau.edu.cn.
authors.forename: Canping
authors.initials: C
authors.lastname: Pan
mesh_terms: D001280:Atrazine / Q000032:analysis; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D005618:Fresh Water / Q000032:analysis; D006540:Herbicides / Q000032:analysis*; D057230:Limit of Detection; D037742:Nanotubes, Carbon; D010573:Pesticide Residues / Q000032:analysis; D012839:Simazine / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*; D013056:Spectrophotometry, Ultraviolet; D014227:Triazines / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D004129:Dimethylpolysiloxanes; D006540:Herbicides; D037742:Nanotubes, Carbon; D010573:Pesticide Residues; D012989:Soil Pollutants; D014227:Triazines; D014874:Water Pollutants, Chemical; C100057:ametryne; C013830:baysilon; D001280:Atrazine; D012839:Simazine
keywords: Multiwalled carbon nanotubes; Pulse glow discharge-ion mobility spectrometry; Stir bar sorptive extraction; Triazine herbicides