绿茶中联苯菊酯和氯氟氰菊酯残留检测质量控制基体标准物质的研制  

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

作　　者：方海仙[1,2] 陈兴连 李昕昀[1,2] 李俊 普娅丽 刘宏程 FANG Haixian;CHEN Xinglian;LI Xinyun;LI Jun;PU Yali;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,China;Agricultural Products Quality and Safety Inspection of Yuanjiang,Yuanjiang,Yunnan 653300,China)

机构地区：[1]云南省农业科学院质量标准与检测技术研究所,云南昆明650205 [2]农业农村部农产品质量监督检验测试中心(昆明),云南昆明650205 [3]元江县农产品质量安全检测站,云南元江653300

出　　处：《食品与机械》2024年第4期40-46,共7页Food and Machinery

基　　金：云南省重点研发计划项目(编号:202102AE090021);云南省庞国芳院士工作站(编号:202305AF150015)。

摘　　要：目的:制备一批绿茶中联苯菊酯和氯氟氰菊酯基体标准物质。方法:以绿茶为研究对象,通过喷洒联苯菊酯和氯氟氰菊酯,样品经粉碎、过筛、均质、装瓶,通过均匀性、稳定性检验后,由3家实验室联合定值确定量值,并进行不确定度评估。结果:绿茶中联苯菊酯和氯氟氰菊酯的量值分别为(0.185±0.0197),(0.207±0.0466)mg/kg,k=2,置信区间为95%。结论:研制出的绿茶中联苯菊酯和氯氟氰菊酯基体标准物质足够均匀,足够稳定,定值结果可靠。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±0.0197)and(0.207±0.0466)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.

关 键 词：绿茶 联苯菊酯 氯氟氰菊酯 基体标准物质 制备方法 

分 类 号：TS272.51[农业科学—茶叶生产加工]