[Determination of alkylphenols and alkylphenol polyethoxylates in textiles by normal-phase high performance liquid chromatography and solid-phase extraction].
A method for the simultaneous determination of alkylphenols (AP) and alkylphenol polyethoxylates (APnEO) (n = 2-16) in textiles was developed by normal-phase high performance liquid chromatography (NP-HPLC). The residues of AP and APnEO in the samples were extracted with methanol by Soxhlet extraction. The pretreatment conditions such as extraction solvents, extraction methods and clean-up methods were optimized. The sample was purified by an HLB solid-phase extraction column and separated on an amino column (250 mm x 4.6 mm, 5 microm) with hexane-isopropanol (90:10, v/v) and isopropanol-water (90:10, v/v) as mobile phases at a flow rate of 1.0 mL/min and determined by a fluorescence detector. AP and each APnEO oligomer were separated successfully within a reasonable time with gradient elution, which are difficult to be separated by using conventional reversed-phase high performance liquid chromatography (RP-HPLC). The detection limit was 1.0 mg/kg for each analyte. The recoveries ranged from 90.4% to 104.1% with the relative standard deviations (RSDs) ranged from 0.64% to 4.21%. This method is suitable for the determination of alkylphenols and alkylphenol polyethoxylates in textiles.
Lü
Chunhua
C
Zhejiang Entry-Exit Inspection and Quarantine Bureau, Hangzhou, China. lvch@ziq.gov.cn
Chen
Xiaomei
X
Liu
Haishan
H
D000180:Acrylic Resins / Q000032:analysis; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis; D005026:Ethylene Glycols / Q000032:analysis*; D010636:Phenols / Q000032:analysis*; D052616:Solid Phase Extraction / Q000379:methods*; D013783:Textile Industry; D013784:Textiles / Q000032:analysis*
C524470:4-t-octylphenolmonoethoxylate; D000180:Acrylic Resins; D004785:Environmental Pollutants; D005026:Ethylene Glycols; D010636:Phenols; C474055:octylphenol; C478961:poly(ethylacrylate); C025256:nonylphenol