论文部分内容阅读
本文叙述了用四碱—氯胺T反应比色测定土壤中活性碘的半定量快速方法。测定范围0．01—1微克/25毫升溶液中。方法简单快速,每人每天约可完成60个测定。论述了碘作为地热勘查中探途元素的可能性,进而用文中所述方法测定了西藏羊八井地热田上取得的11 条剖面193个地表土壤样品(覆盖面积25平方公里),获得了规模大、强度高的碘异常分布图。碘异常和视电阻率法及土壤汞异常分布区较为吻合且都和地热储的分布相对应。从而指出碘可能是地热勘查中一个重要的探途元素。
This paper describes a rapid, semiquantitative and rapid method for the determination of active iodine in soil by tetrakali-chloramine T-reaction colorimetry. The determination range 0.01-1 micrograms / 25 ml solution. The method is simple and fast, about 60 tests per person per day can be done. The possibility of iodine as an exploration element in geothermal prospecting is discussed. Then, 193 surface soil samples of 11 sections (covering an area of 25 km 2) obtained from the geothermal field in Yangbajing, Tibet were measured by the method described in the article, , High intensity of iodine distribution map. Abnormal iodine and apparent resistivity and soil mercury anomalies are more consistent with the distribution of geothermal reservoirs. This indicates that iodine may be an important exploration element in geothermal exploration.