氯仿沥青A连续抽提法的研究

作者针对索氏法抽提岩石可溶有机质中存在的问题,对索氏抽提器进行了改进,变索氏法溶剂对岩石的间断抽提,改为溶剂对岩石连续抽提.试验表明,泥岩、灰岩和页岩样品连续法抽提8小时的抽出量与索氏法抽提72小时相近,煤样连续法抽提24小时的抽出量与索氏法抽提100小时相近,提高抽提效率4—9倍.同时其族组份分析资料,与索氏法相比,具有连续性和可比性. 

STUDY OF CONTINUOUS EXTRACTION OF BITUMEN A WITH CHLOROFORM

In view of problems with Soxhlet extraction for soluble organic matter in rocks, improvements were made on Soxhlet extractors. The discontinuous extraction of Soxhlet method on rocks with solvent is changed into continuous extraction of rocks with solvent. Experiments show that the extracted amounts of claystones, limestones and shales of continuous method for 8hrs were comparable to those of Soxhlet method for 72hrs. The extracted amounts of coal samples with continuous extraction for 24 hours was edual to that of Soxhlet extraction of 100 hours. Therefore the extractive efficiency is increased by 4-9 times. Moreover the data of group analysis show better continuity and comparability than those of Soxhlet methods.