摘要
本文用特制的汞型活性碳纸富集地质样品中痕量碘并用X-射线荧光光谱进行测定。方法操作简便,样品测定限为0.25ppm,测定含I^-量25μg薄试样片(n=10),其相对标准偏差为3％。经地质标准样品验证,结果与推荐值符合。
The iodine is enriched with a disk of Hg2+ loaded active charcoal paper which possesses a strong absorptivity as well as a large capacity. The background of the disk is low, and no matrix correction needed. The collection procedure of I- on the disk can be achieved simply by placing the flask containing the solution and the disk on a vibrator for 2-3 hours. The RSD is 3% (I-25μg, n=10). The detection limit is 0.25ppm for the sample. Data obtained from the analysis of CRMs GSS4-7, GSD-10 and GSD-12 by this method agreed well with certified values.
出处
《岩矿测试》
CAS
CSCD
北大核心
1990年第3期175-178,共4页
Rock and Mineral Analysis
关键词
地质
样品
碘
活性碳纸
XRF法
iodine determination, mercury loaded active charcoal paper, trace iodine preconcentration
