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CCl_4萃取分离碘时放射性碘与载体碘的同位素交换

CCl_4萃取分离碘时放射性碘与载体碘的同位素交换[J]. 核化学与放射化学, 1994, 16(1): 59-59.
引用本文: CCl_4萃取分离碘时放射性碘与载体碘的同位素交换[J]. 核化学与放射化学, 1994, 16(1): 59-59.

CCl_4萃取分离碘时放射性碘与载体碘的同位素交换

  • 摘要: 研究了用CCl_4萃取法分离47MeV/u的 ̄(12)C离子与 ̄(133)Cs反应产生的碘时,放射性碘与不同价态的载体碘之间的同位素交换。结果表明:在碱性介质中用NaCIO把载体I ̄-氧化为IO,再在酸性溶液中用NH_2OH·HCI还原到I_2,然后用CCl_4萃取分离出碘,放射性碘与载体碘之间的交换是完全的。
    Abstract: ISOTOPIC EXCHANGE OF CARRIER IODINE WITH RADIOIODINE BY CCl_4 EXTRACTION OF IODINEYANG WEIFAN;LI ZONGWEI;SUN XIURONG MO WANTONG;ZHAO ZHIZHENG;XIE XIUJUN QIN ZHI;ZHANG LI;WU DINGOING(Institute of Modern Physics,Academia Sinica,Lanzhou,730000)ABSTRACT The isotopic exchange of the radioiodine with the carrier iodine is investigated by CCl_4extraction of iodine formed in the interactopn of 47MeV/u ~(12)C ions with ~(133)Cs.The radioio-dine is separated from the other reaction products by the CCl_4 extraction of iodine with thecarriers I~- IO and IO.The iodine is preciptated as AgI for weighing and counting. Theresults are shown that the complete exchange of radioiodine with the carrier iodine can becarried out using a procedure which consists of the oxidation of I~- to IO by NaClO in an aL-kaline solution, the reduction of the IO to I_2 with hydroxylamine hydrochloride(NH_2OH·HCl)in the acidic solution and the extraction of I_2 with CCI_4. The exchange rates of the I~-(I°),IO and IO are 85%, 92% and 94%,respectively. Key words Isotopic exchange Extraction Cross section~(12)C ion
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  • 刊出日期:  1994-02-19

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