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介绍了土壤样品中贵金属铂、钯、金的水提取态、黏土吸附态与可交换态、有机质结合态以及铁锰氧化物结合态等不同相态的提取方法与测定方法。方法检出限为铂0.03 ng/g,钯和金0.01 ng/g。实验了铂、钯、金活动态金属各种提取液介质中痕量贵金属的稳定性、固-液分离方法、提取温度的影响及提取液的处理方法。通过在南非隐伏铂钯矿或矿化区的试验,结果表明所圈定的异常与实际矿(化)体相符,为识别隐伏贵金属铂钯矿床提供了有效信息,对寻找隐伏矿床具有一定的指导意义。
In this paper, the extraction and determination methods of water, copper, gold in water, extraction of adsorbed and exchanged clay, organic matter and bound of Fe-Mn oxide in soil samples are introduced. The limits of detection were 0.03 ng / g platinum and 0.01 ng / g gold. The stability of trace amounts of precious metals in various extraction media of platinum, palladium, gold and active metals, the solid-liquid separation method, the influence of extraction temperature and the treatment method of the extract were studied. The results show that the delineated anomaly is in agreement with the actual ore body, which provides effective information for identifying the buried precious metal platinum-palladium deposit and is of guiding significance for finding the hidden ore deposit .