土壤△C气相色谱分析及有关问题探讨  

CHROMATOGROPHIC ANALYSIS OF △C IN SOIL AND A DISCUSSION OF THE RELATED PROBLEMS

作　　者：傅洪[1] 郭庆福[1] 席亚利[1] 钱玲[1] 

机构地区：[1]大庆石油管理局勘探开发研究院

出　　处：《石油勘探与开发》1990年第4期40-44,共5页Petroleum Exploration and Development

摘　　要：蚀变碳酸盐是烃类气体垂直运移至地表形成的一种特殊碳酸盐,只有这种碳酸盐在500℃—600℃温度区间可释放出CO_2(ΔC)。ΔC 是油气地表化探的一项重要参数。本文介绍了一种用热释和气相色谱测定ΔC 的新方法,该方法采用分道收集、单个接色谱分析,具有快速,准确的特点。Based on the characteristics that the temperatures of degradation of CO_3~= salts are different for the carbonate salts from different origin and only CO_2 (AC) can be separated from carbonate salts in the soil in a temperature be- tween 500℃ and 600℃,by using an apparatus with self-made 6-channel pipe type thermal degradation furnace,and making use of collecting samples in li- quified N_2 wells,Sampling with the 6-channel valve and outside calibration technique CO_2 and H_2O content in the soil are determined.Comparing the CO_2 and H_2O content of several types of soil with different qualities with the differential thermal weight loss,it is demonstrated that amonut of CO_2+H_2O of thermally degradated from only a few types of soil are nearly equel to the amount of △C from differential thermal analysis,while the actual amount of △C (CO_2) differs from that obtained from differential thermal analysis by 20- 40%.The differences between the H_2O content of various soil are fairly large, being 20-40% also.In this method collecting by channels and separatly chr- omatographic analysis of individual sample will have a high efficiency and can make a better use of the gas chromatographic.

关 键 词：土壤 碳酸盐 气相色谱 油气 

分 类 号：P618.130.1[天文地球—矿床学]