论文部分内容阅读
本文提出一种水中超痕量金的测试方法.该法先将1升水中加入0.1克活性炭,在PH3—4的条件下振荡五分钟,使金富集;然后,将活性炭用中子活化—r能谱仪测定.活性炭能定量吸附由蒸馏水配制的溶液中离子态和胶体态金,以及这两种形态的金适量标加并达平衡的天然地表水中的两种形态的金.用于富集金的三种树脂的性能已有评价;离子态金可定量洗脱,而胶态金洗脱不完全.炭纤维电极上的电解沉淀产生类似的结果。活性炭张予富集技术的试验是在含有~(198)Au指示剂和总金浓度为1μg/1的溶液中进行的。活性吸附一中子活化r能谱法测定总金量(离子态和胶体金)的检测下限为0.3ng/1.该法已用来测定含金地表水中的金概述部分从略
This paper presents a test method for ultra-trace gold in water by first adding 0.1 g of activated carbon to 1 liter of water, shaking for five minutes under the condition of PH3-4 to enrich the gold, and then activating the activated carbon with neutron- r spectrometry .Carbon activated carbon adsorption quantitatively ionized and colloidal gold in solution prepared from distilled water, as well as the two forms of gold in the amount of standard addition and balance of natural surface water two forms of gold for the rich The performance of the three gold-collecting resins has been evaluated; ionic gold can be eluted quantitatively while the elution of the colloidal gold is incomplete. Electrolytic precipitation on the carbon fiber electrode produces similar results. Activated carbon sheets were tested for enrichment techniques in solutions containing ~ (198) Au indicator and total gold concentration of 1 μg / l. The detection limit of the total amount of gold (ionic and colloidal gold) by the active adsorption-neutron activation r spectrometry is 0.3 ng / 1. This method has been used to determine the gold content in gold-bearing surface water