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The heavy metals of soils around coal waste pile at Taoyuan coal mine (in Anhui province, China) has exceeded provincial's background values, posing a serious threat to residents in the mine area. Quantitative evaluation on human health risks (HHR) from different sources of heavy metals can determine priority sources and help to reduce risks. Statistics, spatial distribution, and positive matrix factorization (PMF) were applied to identify contribution of sources, and HHR from different sources were quantitatively calculated by combining the HHR with PMF model. In this study, 37 samples were collected from topsoil (0–20 cm) around coal waste pile. Four sources were apportioned as follow: industrial activities (48.37%), transportation (22.44%), natural source (15.44%), and leaching from coal waste pile (13.70%). As for carcinogenic risk, industrial activities was the priority source. Moreover, the noncarcinogenic risk and carcinogenic risk for children were obviously higher than adults, and the main exposure pathway for adults and children was similar, mainly from oral ingestion. The combined model was effective to assess HHR quantitatively from different sources, thereby the outcomes of the study provide a better understanding and suggestions for pollution control and human health from sources. [ABSTRACT FROM AUTHOR]

In the present study, the complete chloroplast genome of Lonicera tangutica is presented and characterized for the first time. The complete chloroplast genome was 156,121 bp in length, including 23,899 bp inverted repeat (IR) regions, an 89,466 bp large single-copy (LSC) region, and an 18,851 bp small single-copy (SSC) region. A total of 129 genes, including 37 tRNA genes, eight rRNA genes, and 84 protein-coding genes, were annotated, and the overall GC content of the chloroplast genome was 38.35%. Two introns in the ycf3 gene and a single intron in another gene were detected. Maximum-likelihood phylogenetic analysis indicated that L. tangutica has a very close evolutionary relationship with Lonicera praeflorens, Lonicera hispida, Lonicera fragrantissima, and Lonicera stephanocarpa. These results are valuable for studying the evolution and genetic diversity of L. tangutica. [ABSTRACT FROM AUTHOR]