Comparison of urine and blood as a convenient and practical sample for estimating the contamination level of live cattle with radioactive cesium
Comparison of urine and blood as a convenient and practical sample for estimating the contamination level of live cattle with radioactive cesium
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尿液和血液作为一种方便实用的样本来评估活牛放射性铯污染水平的比较
DOI：
10.1111/asj.13242
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发表时间：
2019
影响因子：
2
通讯作者：
Okada Keiji
中科院分区：
文献类型：
--
作者：
Sato Itaru;Sasaki Jun;Satoh Hiroshi;Natsuhori Masahiro;Murata Takahisa;Okada Keiji
比较了血液和尿液，以确定哪种样品更适合用于估算活牛肌肉中放射性铯的浓度。肌肉中~（137）Cs的最可几浓度是血液中的21.0倍，估算误差为28%。用尿样准确地估算了血中137 Cs的浓度。即使使用尿样估算肌肉中137 Cs浓度，估算误差也没有增加太多（33%）。另一方面，用一个注射器可以收集的最大血液体积是50 ml，而收集1，000 ml尿液是容易的。通过检查50毫升血液，至少需要360分钟才能确认一头奶牛符合法律的标准。然而，对于1,000 ml尿液，20分钟的测量时间足以达到此目的。所需测量时间的这种差异对于实际使用至关重要。此外，尿液可以由农民自己收集，而血液收集则需要兽医。因此，尿是一种较为方便和实用的活牛放射性铯污染水平的评价样品。
Blood and urine were compared to clarify which is a better sample for estimating the concentration of radioactive cesium in muscles of live cattle. The most probable concentration of137Cs in muscles was 21.0 times that in blood, and the error of this estimation was 28%. The concentration of137Cs in blood was estimated accurately using urine samples. The estimation error did not increase so much (33%), even when the concentration of137Cs in muscles was estimated using urine samples. On the other hand, the maximum volume of blood that can be collected with one syringe is 50 ml, whereas it is easy to collect 1,000 ml of urine. It took at least 360 min to confirm that a cow meets the legal standard by inspecting 50 ml of blood. However, with 1,000 ml of urine, a 20 min measurement time was sufficient for this purpose. This difference in the required measurement time is critically important for practical use. In addition, urine can be collected by farmers themselves, whereas the blood collection requires a veterinarian. Therefore, urine is a more convenient and practical sample for estimating the contamination level of live cattle with radioactive cesium.