高效壤气汞捕集器研制

摘要

针对以往化探技术中壤气汞方法吸附材料吸附性不均一,以及操作过程中容易造成污染的问题,研制了多层捕汞管吸附技术与捕汞管富集器相结合的壤气汞捕集器.经标准气样品分析测试验证,结果表明:捕集器吸附性良好,稳定性高,测试性能满足各项指标.在含山昭关地热化探野外试验中显示,该捕集器能够有效吸附壤中气的微量气态汞,应用效果良好.该捕集器完善了化探样品的壤气汞富集分析和技术,具有良好的应用前景.%In the past, adsorption property of the materials used in the soil gaseous mercury method was heterogeneous, and it was also easy to be polluted in the process of operation.The above problems have exerted adverse effect on the application of the method.The trap apparatus of soil gaseous mercury based on multi-layer pipes adsorption techniques combined with the enrichment apparatus has been developed in this study.The adsorption property is verified by standard gas sample analysis in the laboratory.The results show that the trap adsorption is good, the stability is high, and its test performance meets the need of various indicators.The field test in Zhaoguan geothermal system shows that the trap apparatus can absorb effectively trace gaseous mercury in soil gas, and the application effectiveness is good.The trap apparatus improves the techniques of enrichment and analysis of gaseous mercury in soil in geochemical exploration and has a good application prospect.