title: Enrichment and determination of octylphenol and nonylphenol in environmental water samples by solid-phase microextraction with carboxylated carbon nano-spheres coating prior to gas chromatography-mass spectrometry.
abstract: In this paper, a novel and simple method for the sensitive determination of endocrine disrupter compounds octylphenol (OP) and nonylphenol (NP) in environmental water samples has been developed using solid-phase microextraction (SPME) coupled with gas chromatography-mass spectrometry. Carboxylated carbon nano-spheres (CNSs-COOH) are used as a novel SPME coating via physical adhesion. The CNSs-COOH fiber possessed higher adsorption efficiency than 100 μm polydimethysiloxane (PDMS) fiber and was similar to 85 μm polyacrylate (PA) fiber for the two analytes. Important parameters, such as extraction time, pH, agitation speed, ionic strength, and desorption temperature and time, were investigated and optimized in detail. Under the optimal parameters, the developed method achieved low limits of detection of 0.13~0.14 ng·L(-1) and a wide linear range of 1~1000 ng·(-1) for OP and NP. The novel method was validated with several real environmental water samples, and satisfactory results were obtained.
authors: College of Food Science and Engineering, Shandong Agricultural University, Taian, 271018, China.|Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, 250014, China.
authors: Sheng-Xiang
authors: SX
authors: Gong
authors: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, 250014, China.
authors: Xia
authors: X
authors: Wang
authors: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, 250014, China.
authors: Lei
authors: L
authors: Li
authors: College of Food Science and Engineering, Shandong Agricultural University, Taian, 271018, China. mlwang@sdau.edu.cn.
authors: Ming-Lin
authors: ML
authors: Wang
authors: Key Laboratory for Applied Technology of Sophisticated Analytical Instruments of Shandong Province, Analysis and Test Centre, Shandong Academy of Sciences, Jinan, 250014, China. zhaors1976@126.com.
authors: Ru-Song
authors: RS
authors: Zhao
mesh_terms: D002244:Carbon / Q000737:chemistry*; D052244:Endocrine Disruptors / Q000032:analysis* / Q000302:isolation & purification; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D057230:Limit of Detection; D054118:Nanospheres / Q000737:chemistry*; D010636:Phenols / Q000032:analysis* / Q000302:isolation & purification; D052617:Solid Phase Microextraction / Q000379:methods*; D014867:Water / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000302:isolation & purification
chemical_list: D052244:Endocrine Disruptors; D010636:Phenols; D014874:Water Pollutants, Chemical; C474055:octylphenol; D014867:Water; D002244:Carbon; C025256:nonylphenol
keywords: Carboxylated carbon nano-spheres; Gas chromatography–mass spectrometry; Nonylphenol; Octylphenol; Solid-phase microextraction