| 单词 | radiochemical purity |
| 释义 | > as lemmasradiochemical purity radiochemical purity n. the degree to which a preparation of a radioactive isotope is free from radioactive contaminants, or from other contaminants which would interfere with its use or assay; (also) the degree to which a radioactive isotope is present in a preparation in the desired chemical form. ΘΚΠ the world > matter > physics > atomic nucleus > measurement of ionizing radiation > [noun] > freedom from radioactive impurities radiochemical purity1915 radiopurity1950 1915*Radio-chemical purity [see sense A. 1]. 1961 G. R. Choppin Exper. Nucl. Chem. ix. 129 Radiochemical purity is frequently of greater importance than chemical purity; it may be better to have a milligram of inert impurity in the final sample than 10−9 gm of radioactive contaminant. 1977 Internat. Jrnl. Appl. Radiation & Isotopes 28 213/1 Radiochemical purity refers to the fraction of a specific radioisotope that is present in the desired chemical form; whereas radionuclidic purity refers to the fraction of the total radioactivity that is present as the specified radioisotope. 2007 Appl. Radiation & Isotopes 65 22/2 The quality of the final product of highly concentrated 188Re was checked for radionuclide purity..and radiochemical purity. < as lemmas |
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