期刊
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
卷 180, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jpba.2019.113071
关键词
Miniaturized solid phase extraction; Natural products; Phenylurea herbicides; Ultra-high-performance liquid; chromatography coupled with quadrupole; time-of-flight mass spectrometry; Zirconium metal-organic framework
资金
- public welfare research project of Zhejiang Province [LGF18H280006, LGF18H280004]
- National Natural Science Foundation of China [81704144, 81573552]
- Hangzhou 131 middle-aged and young talent training plan (China, 2017)
- New-shoot Talents Program of Zhejiang Province [2019R426074]
The zirconium metal-organic framework (Zr-MOF) was used as a novel and effective adsorbent material for the enrichment of five phenylurea herbicides (fenuron, monuron, diuron, linuron and pencycuron) in natural products. The target analytes were determined by ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry. Some crucial experimental parameters, such as type of adsorbents, amount of adsorbent, type of eluent solvents and adsorption capacity were investigated and optimized. Under the optimum extraction conditions, the enrichment factors of fenuron, monuron, diuron, linuron and pencycuron were 90, 128, 148, 204 and 295 times, respectively. A good linearity was obtained in different concentration levels of target analytes with the determination coefficients (r(2)) larger than 0.993. In addition, the limits of detection varied from 0.05 to 0.36 ng/mL and the recoveries of the analytes were in the range of 85.19-99.13 %. The results demonstrated that the proposed miniaturized solid-phase extraction procedure coupled with Zr-MOF could become an effective tool to analyze phenylurea herbicides and would have the vast application prospect for the extraction of pesticide residue and more organic pollutants from Hawthorn, Dendrobii Officinalis Caulis and Salviae Miltiorrhizae Radix et Rhizoma samples. (C) 2019 Elsevier B.V. All rights reserved.
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