| 原子吸收分光光度法测定大米粉中锌含量的不确定度评定 |
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| 引用本文： | 张平,姜诚,郁爱萍.原子吸收分光光度法测定大米粉中锌含量的不确定度评定[J].食品科学,2007,28(11):476-478. |
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| 作者姓名： | 张平 姜诚 郁爱萍 |
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| 作者单位： | 上海市崇明食品药品检验所； 上海市崇明食品药品检验所 上海202150； 上海202150； |
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| 摘 要： | 建立大米粉中锌含量测定结果的不确定度评定,分析了大米粉中锌含量测定过程中供试品重复性测量、供试品稀释体积,供试品称重和供试品锌浓度测量等因素对大米粉中锌含量测定的不确定度的影响。扩展不确定度U95为2.5mg/kg,覆盖因子k=2。
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| 关 键 词： | 测定不确定度 锌 原子吸收分光光度法 大米粉 评定 |
| 文章编号： | 1002-6630（2007）11-0476-03 |
| 修稿时间： | 2007-08-19 |
Evaluation of Uncertainty Measurement in Content Determination of Aciclovir Tablets by UV |
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| ZHANG Ping,JIANG Cheng,YU Ai-ping.Evaluation of Uncertainty Measurement in Content Determination of Aciclovir Tablets by UV[J].Food Science,2007,28(11):476-478. |
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| Authors: | ZHANG Ping JIANG Cheng YU Ai-ping |
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| Affiliation: | Shanghai Chongming Institute for Food and Drug Control, Shanghai 202150, China |
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| Abstract: | Objective: To establish a method for the evaluation of the uncertainty of the zinc content determaination of the rice. The influencing factors on the uncertainty in the procedure of the content determination were evaluated, including repeatability of results of measurements, the dilated volume of sample, the weight of sample, the measurement for concertration of zinc by standard curve. The expanded uncertainty U95 was 2.5 mg/kg, the coverage factor was 2. The evaluation is reliable. |
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| Keywords: | uncertainty of measurement zinc atomic absorb spectrometry rice evaluation |
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