| 释义 |
pertechnetate, n. Chem.|pəˈtɛknɪteɪt|
Also -technate |-ˈtɛkneɪt|.
[f. as *pertechnetic a. + -ate1.]
A salt of pertechnetic acid; used attrib. in Med. with reference to the use of a pertechnetate as a radioactive tracer in various diagnostic scanning techniques.
1949Jrnl. Amer. Chem. Soc. LXXI. 1507/2 During the course of a polarographic study of technetium with G. E. Boyd it was found that distinct reduction waves were found for pertechnitate [sic] in 2M sodium hydroxide. 1950Ibid. LXXII. 4806/1 Pertechnetate, although unstable in acid solution, is stable in alkaline solutions, and, if a strong base exchanger is used, it can be separated from perrhenate ion. 1951Jrnl. Chem. Educ. XXVIII. 189/2 If to a solution containing radioactive heptavalent technetium (pertechnate ion), permanganate ion is added, and the solution is reduced with alcohol, the manganese is reduced to MnO2 . 1966Ricerca Scientifica XXXVI. 727 A solution of ammonium pertechnetate in HCl aged at room temperature for 15 months still contains more than 11{pcnt} technetium(V). 1977Lancet 20 Aug. 410/2 A pertechnetate thyroid scan showed diffuse thyroid hyperplasia. 1987Oxf. Textbk. Med. (ed. 2) I. x. 62/1 Other techniques which have proved useful include thallium-pertechnetate scanning, computerized axial tomography, ultrasonography, and selective injection of contrast dye such as methylene blue to discolour the parathyroids. |