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foodsafety

[交流] 求助英文解释回收率计算【2009年9月30-2009年10月1日】

在英文投稿的审稿人意见要求具体介绍如何计算回收率。下面是我查到的中文,求助英文解释。多谢了
回收率有空白加标回收和样品加标回收两种
  空白加标回收:在没有被测物质的空白样品基质中加入定量的标准物质,按样品的处理步骤分析,得到的结果与理论值的比值即为空白加标回收率。
  样品加标回收:相同的样品取两分,其中一份加入定量的待测成分标准物质;两份同时按相同的分析步骤分析,加标的一份所得的结果减去未加标一份所得的结果,其差值同加入标准的理论值之比即为样品加标回收率。
  加标回收率的测定, 是实验室内经常用以自控的一种质量控制技术. 对于它的计算方法, 文献[1, 2 ]中均给定了一个理论公式:
  加标回收率= (加标试样测定值-试样测定值)÷加标量×100%.

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lixiaod001

金虫 (正式写手)

zap65535(金币+0,VIP+0):相同的样品取两分 = the same sample taken two hours ?? 12-22 12:00
Blank spike recovery: in the absence of the tested substances blank sample matrix by adding quantitative standard materials, processing steps according to the sample analysis of the results obtained with the theoretical value of the ratio shall be a blank recoveries.

Sample spike recovery: the same sample taken two hours, including one by adding a quantitative component under test standard materials; two steps in the same time, the analysis by the same analysis, plus the results of the subject of a minus not a plus standard proceeds a result, the difference between the theoretical value with the accession to the ratio of the standard shall be the sample recoveries.

The determination of recoveries of standard addition is often used for self-control laboratory as a quality control techniques. For its method of calculating the literature [1, 2] have given a theoretical formula:

The recovery = (measured value plus standard sample - sample measured value) ÷ plus a scalar × 100%.
2楼2009-09-30 11:02:17
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