地球化学样品分析中污染物研究

样品是地球科学研究工作的根本依据,样品一旦遭受污染,实验结果难免失准,之后的研究过程则是徒劳。这方面的工作较少有人专门研究,但其重要性却不容忽视。试验表明:地化样品在前处理和保存过程中,很容易被污染,而污染物的主要成分与地化样品的成分极为相似,这就意味着地化样品一旦被污染,很难区分哪些是污染物,哪些是样品本身固有的成分,不仅会对实验结果造成干扰,甚至会完全掩盖地质样品的原貌,误导研究工作,给科研和生产带来损失。

The Analysis on the Impurities in Geochemical Samples

Abnormal composition can, sometimes, be detected from the analytical results of geochemical samples. Based on those, the researcher could judge whether these samples have been contaminated or not by later pollution. Special experiments aimed at several key procedures responsible for polluting geochemical samples have been performed. The result shows that the geochemical samples are very easy to be polluted during collection, package, transportation, pre-treatment and preservation, etc. Owing to the similarity of some contaminations to real compositions of the analyzing samples, once polluted, it is very difficult to tell the difference between them and likely result in disturbance or even cover the real composition of those samples to mislead the research work and bring losses. Although some researchers are engaged in the specific study on this aspect, relative reports are seldom read it seems still need more efforts to elucidate this process.