本文报告了五份中国煤样包括无烟煤和有烟煤的细菌致突变试验结果。试验结果表明,原煤样品的致突变力是十分微弱的,与美国,俄亥俄的原煤样品致突变试验结果相类似。原煤用四种极性不同的溶剂如已烷、甲苯、二氯甲烷和乙腈进行萃取后再行测试时,其致突变力略微增强。文章讨论了这种革取测定的一些问题。 This paper reports the results of bacterial mutagenicity tests on five Chinese coal samples, including anthracite and bituminous coal. The test results show that the mutagenic force of the raw coal sample is very weak, similar to the result of the mutagenic test of coal samples in the United States and Ohio. The raw coal is extracted with four different polar solvents such as hexane, toluene, methylene chloride and acetonitrile and then tested for a slight increase in mutagenicity. The article discusses some of the problems with this pull assay.