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DOI10.1016/j.talanta.2017.08.071
Chemometric optimization of the extraction and derivatization of parabens for their determination in water samples by rotating-disk sorptive extraction and gas chromatography mass spectrometry
Becerra-Herrera, Mercedes; Miranda, Valentina; Arismendi, Daniel; Richter, Pablo
通讯作者Becerra-Herrera, Mercedes ; Richter, Pablo
来源期刊TALANTA
ISSN0039-9140
EISSN1873-3573
出版年2018
卷号176页码:551-557
英文摘要

A combination of rotating disk sorptive extraction (RDSE) using Oasis (R) HLB as the sorbent phase and gas chromatography mass spectrometry (GC-MS) has been performed for the determination of four of the most widely used parabens: methylparaben, ethylparaben, propylparaben and n-butylparaben. The extraction and derivatization of the analytes in water samples were optimized by using factorial (screening) and Doehlert designs, thus reducing the number of analyses with the concomitant reduction of time, reagents, waste, samples and cost. Thus, a RDSE method using 20 mL of sample was performed. The disk was rotated at 2900 rpm for 70 min at room temperature. After a desorption step and evaporation of solvent, a derivatization method using 5 mu L of N-methyl-N-(trimethylsilyl)trifluoroacetamide (MSTFA) for 15 min at room temperature was used previously to inject the final extract into GC-MS. The detection limits and precision (%RSD) were lower than 0.05 mu g L-1 and 9.7% for the studied compounds, respectively. Recoveries were studied using effluent samples of a wastewater treatment plant (WWTP), with values higher than 80% being obtained. The applicability and reliability of this methodology were confirmed through the analysis of tap water and influents from Santiago, Chile, with concentration values ranging from 0.57 to 0.83 mu g L-1 in influents. The main advantage of the present RDSE method is that it is significantly faster than its counterpart by SBSE and requires a considerable lower volume of derivatizing agent.


英文关键词Rotating-disk sorptive extraction (RDSE) Parabens Chemometric GC-MS Water samples
类型Article
语种英语
国家Chile
收录类别SCI-E
WOS记录号WOS:000412610100069
WOS关键词ENDOCRINE-DISRUPTING COMPOUNDS ; HALOGENATED BY-PRODUCTS ; SOLID-PHASE EXTRACTION ; P-HYDROXYBENZOIC ACID ; HUMAN BREAST-TUMORS ; WASTE-WATER ; CHLORINATED DERIVATIVES ; METHYL-TRICLOSAN ; RISK-ASSESSMENT ; TRACE ANALYSIS
WOS类目Chemistry, Analytical
WOS研究方向Chemistry
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/213414
作者单位Univ Chile, Fac Chem & Pharmaceut Sci, Dept Inorgan & Analyt Chem, POB 233, Santiago, Chile
推荐引用方式
GB/T 7714
Becerra-Herrera, Mercedes,Miranda, Valentina,Arismendi, Daniel,et al. Chemometric optimization of the extraction and derivatization of parabens for their determination in water samples by rotating-disk sorptive extraction and gas chromatography mass spectrometry[J],2018,176:551-557.
APA Becerra-Herrera, Mercedes,Miranda, Valentina,Arismendi, Daniel,&Richter, Pablo.(2018).Chemometric optimization of the extraction and derivatization of parabens for their determination in water samples by rotating-disk sorptive extraction and gas chromatography mass spectrometry.TALANTA,176,551-557.
MLA Becerra-Herrera, Mercedes,et al."Chemometric optimization of the extraction and derivatization of parabens for their determination in water samples by rotating-disk sorptive extraction and gas chromatography mass spectrometry".TALANTA 176(2018):551-557.
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