| 直接干燥法测定牛肉中水分含量的不确定度评定 |
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| 引用本文： | 黎嘉惠,;徐雯映,;罗伟,;伍志权.直接干燥法测定牛肉中水分含量的不确定度评定[J].职业与健康,2014(10):1339-1341. |
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| 作者姓名： | 黎嘉惠 ;徐雯映 ;罗伟 ;伍志权 |
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| 作者单位： | [1]广东汇信农产品检验有限公司,广东省佛山市528200; [2]佛山市中南农业科技有限公司,广东省佛山市528200; |
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| 基金项目： | 广东省科技计划项目（项目编号：2012A020100002） |
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| 摘 要： | 目的为确定直接干燥法测定牛肉中水分含量的不确定度,并建立完善的该法测量水分含量的不确定度评定方法。方法利用GB 5009.3-2010《食品中水分的测定》中常压直接加热干燥法对牛肉中的水分进行了反复测量与评定。实验中,通过建立相应的数学模型对该水分含量测量的不确定度主要来源进行系统计算,分析。结果该法测定牛肉水分含量的扩展不确定度为u=0.35%（k=2）。结论测量重复性引入的A类不确定度对水分含量测量结果不确定度的贡献要比B类不确定度大。
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| 关 键 词： | 直接干燥法 牛肉 水分含量 不确定度评定 |
Evaluation of uncertainty in determination of moisture content in beef by direct drying method |
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| Institution: | LI Jia-hui , XU Wen-ying, LUO Wei, WU Zhi-quan( Guangdong Huixin Agricultural Product Inspection Co. LTD, Foshan Guangdong, 528220, China) |
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| Abstract: | Objective]To attain the uncertainty in determination of moisture content in beef by direct drying method,establish a perfect evaluation method of uncertainty.Methods]Based on the atmospheric pressure direct drying method from the Determination of moisture in foods（ GB 5009. 3-2010）,the repeated measurement and evaluation of the moisture content in beef were performed. The main sources of the uncertainty were calculated and analyzed by establishing the related mathematical model.Results]The expanded uncertainty of this method in determination of moisture content in beef was as follows： u = 0. 35%（ k = 2）. Conclusion] The type A uncertainty introduced by measurement repeatability makes a greater contribution to the uncertainty of this method in determination of moisture content than type B uncertainty. |
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| Keywords: | Direct drying method Beef Moisture content Uncertainty evaluation |
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