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Volume 38 Issue 2
Apr.  2019
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Article Navigation >  CARSOLOGICA SINICA  > 2019  >  38(2): 202-207
XIE Hao, ZOU Shengzhang, ZHOU Changsong, ZHU Danni, CAO Jianwen, LU Haiping. Study on characteristics of chromium pollution in a typical chromium slag contaminated site[J]. CARSOLOGICA SINICA, 2019, 38(2): 202-207. doi: 10.11932/karst2017y25
Citation: XIE Hao, ZOU Shengzhang, ZHOU Changsong, ZHU Danni, CAO Jianwen, LU Haiping. Study on characteristics of chromium pollution in a typical chromium slag contaminated site[J]. CARSOLOGICA SINICA, 2019, 38(2): 202-207. doi: 10.11932/karst2017y25
shu

Study on characteristics of chromium pollution in a typical chromium slag contaminated site

doi: 10.11932/karst2017y25
  • 1.

    China University of Geosciences (Beijing), Beijing 100083, China/Institute of Karst Geology, CAGS/Key Laboratory of Karst Dynamics,MNR & GZAR, Guilin, Guangxi 541004, China

  • 2.

    Institute of Karst Geology, CAGS/Key Laboratory of Karst Dynamics,MNR & GZAR, Guilin, Guangxi 541004, China

  • Publish Date: 2019-04-25
    Abstract
  • In this paper, a chromium slag site near a river in a karst area in southwestern China was selected as the research object. The soil and groundwater samples were collected at different locations and depths of the site. The spatial distribution characteristics of chromium (as Cr) in the site and its influence on groundwater were analyzed by means of mathematical statistics. The results show that the horizontal distribution of total Cr concentration in soil is different, and the concentration of Cr in surface soil decreased significantly from upstream to downstream with a change rate of 3.59 .The distribution of total Cr in deep soil at saturated zone is affected by the flow field of groundwater, and the Cr concentration in downstream is subsequently higher than that in the upstream. The concentration of chromium in vertical profile of miscellaneous backfill soil is different from that of diluvial-residual red clay in the slopes, the Cr concentration in miscellaneous backfill soil increases with the increase of depth, and the relationship between it concentration and soil depth can be represented by . In the red clay section, most of the Cr is gathered on the surface, and then its concentration decreases with the increase of depth, which tends to increase near the bedrock surface. The concentration of Cr (VI) in groundwater samples is affected by total Cr concentration in the deep soil, and the two are positively correlated.

     

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