茶叶中啶虫脒残留基体标准样品的制备及测定

doi:10.7506/spkx1002-6630-201602032

食品科学

茶叶中啶虫脒残留基体标准样品的制备及测定

马维1,2，刘树兴1,*，陈琦2，吴雪原2，叶诚诚2

1.陕西科技大学食品与生物工程学院，陕西西安 710021；2.黄山出入境检验检疫局，安徽黄山 245000

出版日期:2016-01-25 发布日期:2016-01-15
通讯作者: 刘树兴
基金资助:
国家质检总局科技计划项目（2014IK138）

Preparation and Characterization of Matrix Reference Material for the Determination of Acetamiprid Residues in Tea

MA Wei1,2, LIU Shuxing1,*, CHEN Qi2, WU Xueyuan2, YE Chengcheng2

1. School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an 710021, China;
2. Huangshan Entry-Exit Inspection and Quarantine Bureau, Huangshan 245000, China

Online:2016-01-25 Published:2016-01-15
Contact: LIU Shuxing

摘要/Abstract

摘要：

为了获得含啶虫脒残留的茶叶基体标准物质用于分析化学实验室质量体系控制，将啶虫脒以0.05 mg/kg茶叶用量对有机成茶喷施啶虫脒药液，阴干后，磨粉，混匀获得含啶虫脒残留的茶叶基体样品。用随机抽样法对其进行均匀性检验，用直线模型法对其进行稳定性检验，并通过多个实验室联合对其定值。结果表明该样品中啶虫脒含量无显著性差异，且在－10 ℃冷冻条件下储存180 d内未观察到明显的降解趋势。实验室联合测定，确定了该样品中啶虫脒的标准值为0.041 7 mg/kg，扩展不确定度（95%置信区间）为0.004 25 mg/kg。

关键词: 茶叶, 啶虫脒残留, 基体标准样品, 制备, 特性值

Abstract:

This study aimed to obtain tea matrix reference material containing acetamiprid residues to be used for
quality system control of analytical chemistry laboratory, Acetamiprid solutions were sprayed on organic tea at a dosage
of 0.05 mg/kg. After being dried in the shade, milled and mixed, tea matrix sample containing acetamiprid residues
was obtained. The homogeneity was tested by random sampling method and the stability was examined by linear
model method. The certification was finally carried out by multiple laboratories. The results showed that the contents
of acetamiprid were not significantly different in these samples and no significant degradation was observed within 180
days at -10 ℃. The certification results showed that the standard value of acetamiprid content of tea reference material
was 0.0417 mg/kg and the expanded uncertainty (95% confidence interval) was 0.004 25 mg/kg.

Key words: tea, acetamiprid residues, matrix reference material, preparation, property value

中图分类号:

TS207.7

马维，刘树兴，陈琦，吴雪原，叶诚诚. 茶叶中啶虫脒残留基体标准样品的制备及测定[J]. 食品科学, doi: 10.7506/spkx1002-6630-201602032.

MA Wei, LIU Shuxing, CHEN Qi, WU Xueyuan, YE Chengcheng. Preparation and Characterization of Matrix Reference Material for the Determination of Acetamiprid Residues in Tea[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201602032.

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茶叶中啶虫脒残留基体标准样品的制备及测定

Preparation and Characterization of Matrix Reference Material for the Determination of Acetamiprid Residues in Tea

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