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本文着重叙述了在放射性核素活度测量中溶液定量取样技术的某些改进。结合采用新的有效的制源方法,使测量结果的精确度得到显著提高。1978年向国际权度局(BIPM)提供的~(60)Co标准溶液,其精确度达0.46%,在0.2%范围内同参加国际γ系列的十多个国家测量结果的平均值一致。
This article highlights some of the improvements in quantitative sampling techniques for radionuclide activity measurements. In combination with a new and effective source method, the accuracy of measurement results is significantly improved. The ~ (60) Co standard solution supplied to the International Bureau of Weights and Measures (BIPM) in 1978 has an accuracy of 0.46% and is consistent with the average of 0.2% of the measurements in more than a dozen countries that participate in the International Gamma Series.