title: Determination of arsenic species in Solanum Lyratum Thunb using capillary electrophoresis with inductively coupled plasma mass spectrometry.
abstract: A simple and highly efficient interface to couple capillary electrophoresis with inductively coupled plasma mass spectrometry by a microflow polyfluoroalkoxy nebulizer and a quadruple ion deflector was developed in this study. By using this interface, six arsenic species, including arsenite, arsenate, monomethylarsonic acid, dimethylarsinic acid, arsenobetaine, and arsenocholine, were baseline-separated and determined in a single run within 11 min under the optimized separation conditions. The instrumental detection limit was in the range of 0.02-0.06 ng/mL for the six arsenic compounds. Repeatability expressed as the relative standard deviation (n = 5) of both migration time and peak area were better than 2.5 and 4.3% for six arsenic compounds. The proposed method, combined with a closed-vessel microwave-assisted extraction procedure, was successfully applied for the determination of arsenic species in the Solanum Lyratum Thunb samples from Anhui province in China with the relative standard deviations (n = 5) ≤4%, method detection limits of 0.2-0.6 ng As/g and a recovery of 98-104%. The experimental results showed that arsenobetaine was the main speciation of arsenic in the Solanum Lyratum Thunb samples from different provinces in China, with a concentration of 0.42-1.30 μg/g.
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Pei-Yu
authors.initials: PY
authors.lastname: Shuai
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Xiao-Jun
authors.initials: XJ
authors.lastname: Yang
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Zong-Qing
authors.initials: ZQ
authors.lastname: Qiu
authors.affiliation: Computer Engineering College, Jimei University, Xiamen, Fujian, P. R. China.
authors.forename: Xiao-Hui
authors.initials: XH
authors.lastname: Wu
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Xi
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Ganga Raj
authors.initials: GR
authors.lastname: Pokhrel
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Yu-Ying
authors.initials: YY
authors.lastname: Fu
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Hui-Min
authors.initials: HM
authors.lastname: Ye
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Wen-Xiong
authors.initials: WX
authors.lastname: Lin
authors.affiliation: Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, Fujian, P. R. China.
authors.forename: Gui-Di
authors.initials: GD
authors.lastname: Yang
mesh_terms: D001152:Arsenicals / Q000737:chemistry*; D002681:China; D019075:Electrophoresis, Capillary; D013058:Mass Spectrometry / Q000379:methods*; D032322:Solanum / Q000737:chemistry*
chemical_list: D001152:Arsenicals
keywords: Arsenic; Capillary electrophoresis; Interface; Microwave-assisted extraction; Solanum Lyratum Thunb