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DOI	10.1016/j.atmosenv.2020.117802
	Sources and distribution of heavy metal and C–N isotopes in topsoils across an urban-rural gradient in a typical hazy city, northern China
	Zou J.; Liu Z.; Shi X.; Song Z.; Yang Y.
发表日期	2020
ISSN	13522310
卷号	241
英文摘要	Urban soils differ from rural soils in that they are more susceptible to both point-source or diffuse anthropogenic contamination associated with urbanization. However, few studies have attempted to identify local sources of C and N, and determine the degree of anthropogenic inputs to topsoils using C–N isotopic data collected across an urban-rural gradient in China. In this study, a combination of heavy metals and isotopic data were collected and analyzed from topsoils along three transects. One transect was located in an urban-suburban area of central Shijiazhuang (CS); the other two were located in northern Shijiazhuang (NS, county-rural) and southern Shijiazhuang (SS, rural). Statistical analysis of heavy metal concentrations suggests that Cu, Pb, Cd and Zn were strongly influenced by vehicular transport, whereas Hg was related to coal burning. In contrast, V, Cr and Ni mainly originated from natural sources. Isotopically, topsoils in SS mainly reflected natural sources. In contrast, generally low δ13CTOC in topsoils from CS and NS indicate the input of coals and vehicle exhausts with depleted values. δ13CTC in topsoils from CS and NS were about the same as those in street dust. Nitrogen isotopes also reflected the influence of coal burning; elevated values (as high as 8.8‰) occurred around urban and industrial sites, whereas low values (as low as −7.2‰) characterized suburban-rural topsoils were affected by vehicle exhausts. However, several abnormally high values were related to coal combustion by local residents in rural areas. This study demonstrates that the distribution of heavy metals and C–N isotopes is closely correlated to local anthropogenic activities, and could be effectively differentiated from natural sources in topsoil among urban, suburban and rural areas. © 2020 Elsevier Ltd
英文关键词	Anthropogenic contamination; C–N isotopes; Shijiazhuang; Soil geochemistry; Urbanization
语种	英语
scopus关键词	Coal; Coal combustion; Heavy metals; Isotopes; Rural areas; Soils; Anthropogenic activity; Anthropogenic contamination; Anthropogenic inputs; Heavy metal concentration; Industrial sites; Nitrogen isotopes; Urban-rural gradients; Vehicle exhausts; Urban growth; cadmium; carbon; carbon 13; cesium ion; chromium; coal; cuprous ion; heavy metal; isotope; lead; mercury; nickel; nitrogen; vanadium; zinc ion; anthropogenic source; carbon isotope; concentration (composition); heavy metal; human activity; nitrogen isotope; rural area; rural-urban comparison; soil pollution; topsoil; urban area; all-terrain vehicle; Article; atmospheric dispersion; atmospheric transport; carbon footprint; China; city; combustion; controlled study; diesel particulate matter; dust; greenhouse gas; haze; industrial production; priority journal; rural area; soil; soil pollution; spatial analysis; statistical analysis; suburban area; urban area; China
来源期刊	Atmospheric Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152994
作者单位	Key Lab of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, Changchun, 130021, China; Experimental Practising and Teaching Center, Hebei GEO University, Shijiazhuang, Hebei 050031, China; Institute of Resource and Environmental Engineering, Hebei GEO University, Shijiazhuang, Hebei 050031, China
推荐引用方式 GB/T 7714	Zou J.,Liu Z.,Shi X.,等. Sources and distribution of heavy metal and C–N isotopes in topsoils across an urban-rural gradient in a typical hazy city, northern China[J],2020,241.
APA	Zou J.,Liu Z.,Shi X.,Song Z.,&Yang Y..(2020).Sources and distribution of heavy metal and C–N isotopes in topsoils across an urban-rural gradient in a typical hazy city, northern China.Atmospheric Environment,241.
MLA	Zou J.,et al."Sources and distribution of heavy metal and C–N isotopes in topsoils across an urban-rural gradient in a typical hazy city, northern China".Atmospheric Environment 241(2020).