Hou Xiaolin, Ostergaard Lars Frøsig, Nielsen Sven P
Risø National Laboratory, NUK-202, Technical University of Denmark, DK-4000 Roskilde, Denmark.
Anal Chem. 2007 Apr 15;79(8):3126-34. doi: 10.1021/ac070100o. Epub 2007 Mar 22.
An analytical method for the determination of 36Cl in nuclear waste such as graphite, heavy concrete, steel, aluminum, and lead was developed. Several methods were investigated for decomposing the samples. AgCl precipitation was used to separate 36Cl from the matrix elements, followed by ion-exchange chromatography to remove interfering radionuclides. The purified 36Cl was then measured by liquid scintillation counting. The chemical yield of chlorine, as measured by ICPMS, is above 70% and the decontamination factors for all interfering radionuclides are greater than 10(6). The detection limit of this analytical method for 36Cl is 14 mBq. The method has been used to determine 36Cl in heavy concrete, aluminum, and graphite from the Danish DR-2 research reactor.
开发了一种用于测定核废料（如石墨、重混凝土、钢、铝和铅）中36Cl的分析方法。研究了几种分解样品的方法。采用AgCl沉淀法将36Cl与基体元素分离，然后通过离子交换色谱法去除干扰放射性核素。纯化后的36Cl随后通过液体闪烁计数法进行测量。通过ICPMS测量，氯的化学产率高于70%，所有干扰放射性核素的去污因子均大于10(6)。该分析方法对36Cl的检测限为14 mBq。该方法已用于测定丹麦DR-2研究堆的重混凝土、铝和石墨中的36Cl。
