Preparation of matrix reference materials of bifenthrin and cyhalothrin pesticide residues in green tea

Authors

FANG Haixian, Quality Standardizing and Testing Technology Institute, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan 650205, China;Supervision & Testing Center for Farm Products Quality Ministry of Agriculture and Rural Affairs （Kunming Section）, Kunming, Yunnan 650205, China
CHEN Xinglian, Quality Standardizing and Testing Technology Institute, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan 650205, China;Supervision & Testing Center for Farm Products Quality Ministry of Agriculture and Rural Affairs （Kunming Section）, Kunming, Yunnan 650205, China
LI Xinyun, Quality Standardizing and Testing Technology Institute, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan 650205, China;Supervision & Testing Center for Farm Products Quality Ministry of Agriculture and Rural Affairs （Kunming Section）, Kunming, Yunnan 650205, China
LI Jun, Agricultural Products Quality and Safety Inspection of Yuanjiang, Yuanjiang, Yunnan 653300, China
PU Yali, Agricultural Products Quality and Safety Inspection of Yuanjiang, Yuanjiang, Yunnan 653300, China
LIU Hongcheng, Quality Standardizing and Testing Technology Institute, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan 650205, China;Supervision & Testing Center for Farm Products Quality Ministry of Agriculture and Rural Affairs （Kunming Section）, Kunming, Yunnan 650205, ChinaFollow

Corresponding Author(s)

刘宏程（1975—），男，云南省农业科学院质量标准与检测技术研究所研究员，博士。E-mail:liuorg@163.com

Abstract

Objective: The preparation method of matrix reference materials of bifenthrin and cyhalothrin pesticide residues in green tea was established. Methods: Green tea samples were sprayed with biphenylthrin and cyhalothrin. The samples were crushed, screened, homogenized and bottled. After the homogeneity and stability tests, the quantity value was determined by three laboratories, and the uncertainty was evaluated. Results: The amount values of bifenthrin and cyhalothrin in green tea were (0.185±0.019 7) and (0.207±0.046 6) mg/kg with k=2, and the confidence interval was 95%. Conclusion: The developed matrix reference materials of bifenthrin and cyhalothrin in green tea are homogeneous and stable enough, and the calibration results are reliable.

Publication Date

5-21-2024

First Page

40

Last Page

46

DOI

10.13652/j.spjx.1003.5788.2023.80725

Recommended Citation

Haixian, FANG; Xinglian, CHEN; Xinyun, LI; Jun, LI; Yali, PU; and Hongcheng, LIU (2024) "Preparation of matrix reference materials of bifenthrin and cyhalothrin pesticide residues in green tea," Food and Machinery: Vol. 40: Iss. 4, Article 7.
DOI: 10.13652/j.spjx.1003.5788.2023.80725
Available at: https://www.ifoodmm.cn/journal/vol40/iss4/7

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