In situ hydrothermal growth of ZnO/g-C3N4 nanoflowers coated solid-phase microextraction fibers coupled with GC-MS for determination of pesticides residues

Ning Zhang; Jia Gao; Chuanhui Huang; Wei Liu; Ping Tong; Lan Zhang

doi:10.1016/j.aca.2016.06.029

In situ hydrothermal growth of ZnO/g-C3N4 nanoflowers coated solid-phase microextraction fibers coupled with GC-MS for determination of pesticides residues

Anal Chim Acta. 2016 Aug 31:934:122-31. doi: 10.1016/j.aca.2016.06.029. Epub 2016 Jun 22.

Authors

Ning Zhang¹, Jia Gao¹, Chuanhui Huang¹, Wei Liu², Ping Tong³, Lan Zhang⁴

Affiliations

¹ Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China.
² Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China; Testing Center, The Sport Science Research Center, Fuzhou University, Fuzhou, Fujian, 350002, China.
³ Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China; Testing Center, The Sport Science Research Center, Fuzhou University, Fuzhou, Fujian, 350002, China. Electronic address: [email protected].
⁴ Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China; Testing Center, The Sport Science Research Center, Fuzhou University, Fuzhou, Fujian, 350002, China. Electronic address: [email protected].

PMID: 27506352
DOI: 10.1016/j.aca.2016.06.029

Abstract

In this paper, Zinc oxide (ZnO) hybridized with graphite-like C3N4 (ZnO/g-C3N4) nanoflowers based solid phase microextraction (SPME) coating was prepared on fiber using in situ hydrothermal growth method for gas chromatographic -mass spectrum (GC- MS) separation and analysis target analytes in complex matrixes for the first time. The proposed hybrid ZnO/g-C3N4 fiber exhibited wide linearity for the pesticide residues in range of 0.003-5.0 ng mL(-1). The limits of detection (LOD) were 0.001-0.0025 ng mL(-1). The relative standard deviation (RSD) for three replicate extractions using one fiber was ranged from 2.3% to 7.6%. The fiber to fiber RSD was 5.3-11.3% (n = 3). This method was successfully used for simultaneous determination of nine pesticide residues in cucumber, pear, Green tea and Minjiang water with satisfactory recoveries of 79.1-103.5%. These results indicated that the ZnO/g-C3N4 composite provided a promising alternative in sample pretreatment and analysis.

Keywords: GC-MS; Pesticides residues; Solid phase microextraction; ZnO/g-C(3)N(4) nanoflowers.

MeSH terms

Gas Chromatography-Mass Spectrometry
Nitriles / chemistry*
Pesticide Residues / analysis*
Solid Phase Microextraction*
Temperature*
Zinc Oxide / chemistry*

Substances

Nitriles
Pesticide Residues
Zinc Oxide