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近来,应用巯基棉分离富集天然水中痕量元素,开始取得较好的效果,长春地理研究所作了较多的工作,也有用于岩矿样品中痕量金的分离,巯基棉用于分离和富集某些痕量元素的优越性已开始显示出来了。 本文详细地研究了银在巯基棉上的交换行为和洗提条件,测量了分配系数和洗提曲线,考查了其它元素的吸附情况,拟定了水系沉积物中痕量银的分析方法,在规定的条件下,本法的检出限为0.06ppm,精密度(RSD％)在含量(0.1—0.2ppm)为20％左右,含量(1—3ppm)为6％左右,准确度也较好。
Recently, the use of thiol cotton separation and enrichment of trace elements in natural water began to obtain better results, Changchun Institute of Geography made more work, but also for the separation of trace amounts of gold in rock samples, mercapto cotton for separation and The advantages of enriching certain trace elements have begun to show. In this paper, the exchange behavior and elution conditions of silver on thiol cotton were studied in detail. The partition coefficients and elution curves were measured. The adsorption of other elements was examined. The analytical method of trace silver in sediments was developed. , The detection limit of this method is 0.06ppm, the precision (RSD%) is about 20% (0.1-0.2ppm), the content (1-3ppm) is about 6%, and the accuracy is also good.