supported by National Natural Science Foundation of China (Grand No. 40872101);Natural Science Foundation of Science and Technology Agency of Shaanxi Province (Grand No. DK07JK322);the Doctor Foundation of Xi'an Science and Technology University (Grand No. A5039)
To better understand the 5# coal (late Paleozoic) from the Weibei Coalfield, nine samples were collected in different locations of the 5# coal seam. The correlation coefficients between 51 trace elements including o...