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Magnetic solid phase extraction of heterocyclic aromatic hydrocarbons from environmental water samples with multiwalled carbon nanotube modified magnetic polyamido-amine dendrimers prior to gas chromatography-triple quadrupole mass spectrometer.
Zhou, Qingxiang; Yuan, Yongyong; Sun, Yi; Sheng, Xueying; Tong, Yayan.
Afiliación
  • Zhou Q; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China. Electronic address: zhouqx@cup.edu.cn.
  • Yuan Y; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China.
  • Sun Y; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China.
  • Sheng X; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China.
  • Tong Y; State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China.
J Chromatogr A ; 1639: 461921, 2021 Feb 22.
Article en En | MEDLINE | ID: mdl-33524931
Present study described a sensitive and efficient method for determination of heterocyclic aromatic hydrocarbons using multiwalled carbon nanotubes modified magnetic polyamido-amine dendrimers (MNPs@PAMAM-Gn@MWCNTs) as adsorbent for magnetic solid-phase extraction (MSPE) coupled with gas chromatography-triple quadrupole mass spectrometer (GC-MS/MS). Some pivotal parameters including PAMAM generation, adsorbent dosage, adsorption time, elution time and volume, pH and humic acid concentration were investigated to achieve the best adsorption efficiencies. Under the optimal conditions, 7-methylquinoline, dibenzothiophene and carbazole had good linearity in the concentration range of 0.005-20 µg L - 1, 9-methylcarbazole, 4-methyldibenzothiophene and 4,6-dimethyl dibenzothiophene had good linearity in the concentration range of 0.001-20 µg L - 1. All the correlation coefficients were higher than 0.996. The detection limits of the targets were in the range of 2.2 × 10-4-1.8 × 10-3 µg L - 1 with precisions less than 8.28% (n = 6). The enrichment factors were in the range of 141-147. The spiked recoveries were in the range of 87.0%-115.1% (n = 3). These results indicated that the method could be a reliable alternative tool for monitoring trace heterocyclic aromatic hydrocarbons in environmental water samples.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hidrocarburos Policíclicos Aromáticos / Nanotubos de Carbono / Dendrímeros / Extracción en Fase Sólida / Fenómenos Magnéticos / Aminas / Cromatografía de Gases y Espectrometría de Masas / Nylons Idioma: En Revista: J Chromatogr A Año: 2021 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Hidrocarburos Policíclicos Aromáticos / Nanotubos de Carbono / Dendrímeros / Extracción en Fase Sólida / Fenómenos Magnéticos / Aminas / Cromatografía de Gases y Espectrometría de Masas / Nylons Idioma: En Revista: J Chromatogr A Año: 2021 Tipo del documento: Article Pais de publicación: Países Bajos