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| Distribution characteristics and source apportionment of HCHs in surface soil in Inner Mongolia Irrigation Area of Yellow River in Tumochuan |
| Received:June 02, 2016 |
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| KeyWord:Dengkou pumping irrigation area, Minzutuanjie irrigation area, surface soil, HCHs, distribution characteristics, source analysis |
| Author Name | Affiliation | E-mail | | WANG Jing | College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Hohhot 010018, China | | | PEI Guo-xia | College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Hohhot 010018, China | peiguoxia@126.com | | HAO La-zhu | Agriculture University Occupation Technical College of Inner Mongolia, Tuyouqi 014109, China | | | ZHANG Qi | College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Hohhot 010018, China | | | GAO Li-hui | College of Water Conservancy and Civil Engineering, Inner Mongolia Agriculture University, Hohhot 010018, China | |
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| Abstract: |
| Selecting Tumochuan Dengkou pumping irrigation area and Minzutuanjie irrigation area as the study area,and analyzing the content of HCHs in surface soil samples by using GC-ECD method.The results showed that the total content of HCHs was between ND~32.51 ng·g-1, and the average concentration was 7.27 ng·g-1.δ-HCH is the main ingredient in four kinds of isomer, the average concentration was 3.69 ng·g-1, the average concentration in order was δ-HCH >γ-HCH >β-HCH >α-HCH. Overall, HCHs residue levels in the surface soil of Tumochuan Dengkou pumping irrigation area and Minzutuanjie irrigation area was lower. Secondly, the spatial distribution of HCHs in the study area was analyzed by using the inverse distance weighting method. The basic level in East-West distribution was Eastern slightly higher than that of the west, to the north and south sides respectively showed increasing trend. Also analyzed and discussed the influence of different factors on the distribution characteristics of HCHs. The source of HCHs was analyzed by the ratio of α-HCH/γ-HCH. Due to its ratio was between 0.15~1.59, which indicates that the environmental changes have taken place in the surface soil of Tumochuan Dengkou pumping irrigation area and Minzutuanjie irrigation area, and a small fraction of the α-HCH/γ-HCH ratio in the soil sample is close to 1, which indicates that there is a new γ-HCH input in the local area. |
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