By using internal standard method based on gas chromatography-electron capture detector( GC-ECD),the contents of persistent organochlorine pollutants polychorin
This paper takes the Tongyu County as an example,based on the evaluation indicator system of eco-environmental stress,using the method of the entropy-GM(1,1),th
Along with development of economy in China,industrial production accidents continued to occur,which caused huge losses to peoples lives and property safety,an