In:
IOP Conference Series: Earth and Environmental Science, IOP Publishing, Vol. 371, No. 3 ( 2019-12-01), p. 032080-
Kurzfassung:
Taking the soil around the coal gangue mountain in the Fengfeng mining area as the research object, 30 soil samples were collected in the east, southeast and southwest directions within 300m of the coal gangue mountain boundary, and the soil in the mining area was measured by inductively coupled plasma mass spectrometry. The contents of five heavy metals such as Cr, Pb, Cd, Cu and Zn were detected, and the spatial distribution characteristics, pollution status and ecological risk of heavy metals in the mining area were analysed. The results show that: (1) the five heavy metals content of Cr, Pb, Cd, Cu and Zn show different decreasing trend from the farther gangue heap and the increase of soil depth. (2) Referring to the background value of the national secondary soil environmental standard, among the five heavy metals in the soil, except for Cu and Cr, the average values of three heavy metals of Zn, Cd and Pb are higher than the soil background value; Single factor index evaluation results show that the Pb pollution is the most serious, followed by Cd pollution. The Nemero comprehensive index method shows that the surface soil is moderately polluted when the distance is zero in the three directions, and the rest places are mildly polluted. (3) According to the ecological risk assessment results, the order of potential ecological hazards of single heavy metals are ranked from strong to weak: Cd 〉 Pb 〉 Cr 〉 Cu 〉 Zn, and the soils are all slightly ecologically harmful.
Materialart:
Online-Ressource
ISSN:
1755-1307
,
1755-1315
DOI:
10.1088/1755-1315/371/3/032080
Sprache:
Unbekannt
Verlag:
IOP Publishing
Publikationsdatum:
2019
ZDB Id:
2434538-6
ZDB Id:
2829818-4
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