radiochemicaladj.n.

Brit.

/ˌreɪdɪəʊˈkɛmᵻkl/, U.S.

/ˌreɪdioʊˈkɛmək(ə)l/

Origin: Formed within English, by compounding. Etymons: radio- comb. form², chemical adj.

Etymology: < radio- comb. form² + chemical adj., in sense A. 1 after radiochemistry n.

Science.

A. adj.

1. Of or relating to radiochemistry; considered in terms of radiochemistry.

ΘΚΠ

the world > matter > chemistry > chemistry as a science > branches of chemistry > [adjective]

mago-chemical1652

physico-chemical1664

chemico-medical1744

unorganic1775

pneumato-chemical1790

electrochemical1808

electrochemic1813

zymological1828

photochemical1858

thermochemical1871

physiochemical1881

stoicheiometrical1887

stereo-chemical1890

stoicheiometric1892

physical-chemical1896

zymotechnic1896

zymotechnical1900

photochemic1907

magnetochemical1911

immunochemical1912

radiochemical1915

topochemical1920

palaeochemical1926

cosmochemical1940

mechanochemical1943

radiation-chemical1946

sonochemical1948

stereological1963

bioinorganic1970

thermochemic-

the world > matter > physics > atomic nucleus > measurement of ionizing radiation > [adjective] > relating to radiochemistry

radiochemical1946

1915 F. Soddy Chem. Radio-elem. (ed. 2) i. 46 In a condition of complete radio-chemical purity.

1946 Chem. & Engin. News 10 Dec. 3168/1 Laboratory facilities for radio~chemical research are classified according to the level of radioactivity involved in the operations.

1973 D. L. Horrocks in A. A. Moghissi & M. W. Carter Tritium i. 34 The total fissions are determined by radiochemical assay of a fission product (i.e., ¹⁴⁰Ba) of known yield.

2007 Jrnl. Nucl. Materials 360 7/2 Considerable effort was carried out in radiochemical laboratory research to develop separation processes for uranium, protoactinium and rare earth elements from the carrier molten salt.

2. (With hyphen.) Of or relating to chemical changes caused by radiant energy. rare.

ΚΠ

1921 D. H. Lawrence Let. 2 Mar. (1962) II. 512 The sun is dangerous these months—it has a radio-chemical action on the blood which simply does for me.

1935 Mind 44 545 In general, chemical reactions are coming to be conceived in the light of the ‘radio-chemical’ hypothesis, viz. that no structural modification can take place except as the result of quantities of radiant energy imparted in rhythmic pulses.

B. n.

A radioactive chemical; a chemical containing a radioactive isotope.

ΘΚΠ

the world > matter > physics > atomic nucleus > measurement of ionizing radiation > [noun] > study of chemical changes > radioactive chemical

radiochemical1950

1950 Jrnl. Physical & Colloid Chem. 54 479 Such an analysis would be a prerequisite to any fundamental knowledge of the cataphoretic method as employed in connection with the application of radiochemicals.

1971 New Scientist 1 Apr. 26/2 The US market is estimated to be worth over $80 million a year with some $25 million spent on radiochemicals, $40 on radiopharmaceuticals, and about $20 million on basic radioisotopes and sealed sources.

2005 Phytochemistry 66 2585/2 Isolated ¹⁴C-labelled cell walls were washed..to remove weakly bound radiochemicals.

Compounds

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.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	radiochemical
释义	radiochemicaladj.n. Brit. /ˌreɪdɪəʊˈkɛmᵻkl/, U.S. /ˌreɪdioʊˈkɛmək(ə)l/ Origin: Formed within English, by compounding. Etymons: radio- comb. form², chemical adj. Etymology: < radio- comb. form² + chemical adj., in sense A. 1 after radiochemistry n. Science. A. adj. 1. Of or relating to radiochemistry; considered in terms of radiochemistry. ΘΚΠ the world > matter > chemistry > chemistry as a science > branches of chemistry > [adjective] mago-chemical1652 physico-chemical1664 chemico-medical1744 unorganic1775 pneumato-chemical1790 electrochemical1808 electrochemic1813 zymological1828 photochemical1858 thermochemical1871 physiochemical1881 stoicheiometrical1887 stereo-chemical1890 stoicheiometric1892 physical-chemical1896 zymotechnic1896 zymotechnical1900 photochemic1907 magnetochemical1911 immunochemical1912 radiochemical1915 topochemical1920 palaeochemical1926 cosmochemical1940 mechanochemical1943 radiation-chemical1946 sonochemical1948 stereological1963 bioinorganic1970 thermochemic- the world > matter > physics > atomic nucleus > measurement of ionizing radiation > [adjective] > relating to radiochemistry radiochemical1946 1915 F. Soddy Chem. Radio-elem. (ed. 2) i. 46 In a condition of complete radio-chemical purity. 1946 Chem. & Engin. News 10 Dec. 3168/1 Laboratory facilities for radio~chemical research are classified according to the level of radioactivity involved in the operations. 1973 D. L. Horrocks in A. A. Moghissi & M. W. Carter Tritium i. 34 The total fissions are determined by radiochemical assay of a fission product (i.e., ¹⁴⁰Ba) of known yield. 2007 Jrnl. Nucl. Materials 360 7/2 Considerable effort was carried out in radiochemical laboratory research to develop separation processes for uranium, protoactinium and rare earth elements from the carrier molten salt. 2. (With hyphen.) Of or relating to chemical changes caused by radiant energy. rare. ΚΠ 1921 D. H. Lawrence Let. 2 Mar. (1962) II. 512 The sun is dangerous these months—it has a radio-chemical action on the blood which simply does for me. 1935 Mind 44 545 In general, chemical reactions are coming to be conceived in the light of the ‘radio-chemical’ hypothesis, viz. that no structural modification can take place except as the result of quantities of radiant energy imparted in rhythmic pulses. B. n. A radioactive chemical; a chemical containing a radioactive isotope. ΘΚΠ the world > matter > physics > atomic nucleus > measurement of ionizing radiation > [noun] > study of chemical changes > radioactive chemical radiochemical1950 1950 Jrnl. Physical & Colloid Chem. 54 479 Such an analysis would be a prerequisite to any fundamental knowledge of the cataphoretic method as employed in connection with the application of radiochemicals. 1971 New Scientist 1 Apr. 26/2 The US market is estimated to be worth over $80 million a year with some $25 million spent on radiochemicals, $40 on radiopharmaceuticals, and about $20 million on basic radioisotopes and sealed sources. 2005 Phytochemistry 66 2585/2 Isolated ¹⁴C-labelled cell walls were washed..to remove weakly bound radiochemicals. Compounds 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 1915Radio-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. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < adj.n.1915
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