title: Study of solvent sublation for concentration of trace phthalate esters in plastic beverage packaging and analysis by gas chromatography-mass spectrometry.
abstract: A novel trace analytical method based on solvent sublation (SS) and gas chromatography-mass spectrometry (GC-MS) was developed for the trace determination of twenty-two phthalate esters (PAEs) from plastic beverage packaging. In the solvent sublation section, the effects of solution pH, NaCl concentration, nitrogen flow rate, and sublation time on the sublation efficiency were investigated in detail, and the optimal conditions were obtained. The trace PAEs migrated from plastic beverage packaging to food simulants were separated and concentrated by solvent sublation, and then the trace target compounds in the concentrated solution were analyzed by GC-MS. According to the European Union Regulation, the food simulants including distilled water for the normal beverages and acetic acid solution (3%) for the acetic beverage of yogurt were prepared for migration tests. The trace analysis method showed good linearity, low limits of detection (LODs) of 1.6-183.5 ng/L, and satisfied recoveries (67.3-113.7%).
authors: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Lin
authors: L
authors: Chang
authors: Research Institute of Chemical Defense, Beijing 102205, PR China.
authors: Pengyu
authors: P
authors: Bi
authors: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China.
authors: Xiaochen
authors: X
authors: Li
authors: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, PR China. Electronic address: weiyun@mail.buct.edu.cn.
authors: Yun
authors: Y
authors: Wei
mesh_terms: D001628:Beverages / Q000032:analysis; D004952:Esters / Q000737:chemistry*; D018857:Food Packaging; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010795:Phthalic Acids / Q000737:chemistry*; D010969:Plastics / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry
chemical_list: D004952:Esters; D010795:Phthalic Acids; D010969:Plastics; D012997:Solvents; C032279:phthalic acid
keywords: Gas chromatography–mass spectrometry; Phthalate esters; Plastic beverage packaging; Solvent sublation; Trace analysis