Geographic distribution of heavy metals and identification of their sources in soils near large, open-pit coal mines using positive matrix factorization

• Wei Ping ChengChina University of Mining and Technology
• Shaogang LeiChina University of Mining and Technology
• Zhengfu BianChina University of Mining and Technology
• Yibo ZhaoChina University of Mining and Technology
• Yuncong C. LiUniversity of Florida
• Yandong GanQufu Normal University