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Sun S.-M.,Jilin Geological Survey Institute | Li Y.-G.,Huinan Forestry Bureau | Lu J.-L.,Jilin University | Jiao B.-Q.,5th Institute of Geological Survey of Jilin Province | Jiang X.-T.,Jingyu Specialty Institute of Jilin Province
Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition) | Year: 2010

Based on the soil geochemical survey data of Ji'an City, the geochemical environment question of red skin sickness is discussed by the element comparison of normal ginseng land and sick ginseng land. The results showed that the contents of CaO, MgO, Na2O and Sr in sick ginseng land were higher than those of normal ginseng land, and pH also rises. Just under the gently rolling topography, Fe2+ and Mn2+ were formed easily because the oxygen status of soil solution was reducing environment caused by the stagnant water. Otherwise, the dissolution of Fe2+ and Mn2+ were accelerated because the ionic strength of soil solution was increased. Thus the increment of soil soluble salt was the most geochemical factor for ginseng red skin sickness under the gently rolling topography. Source


Lu J.-L.,Jilin University | Zhao Y.-Y.,Jilin University | Hao L.-B.,Jilin University | Cai B.,Jilin University | And 2 more authors.
Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition) | Year: 2010

In order to evaluate the contaminated status of PAHs in the agricultural soil of middle part of Jilin Province, the PAHs concentration of agricultural soil was systematically analyzed and the distribution and ecologic risk of PAHs were discussed. The results showed that the content of PAHs in the agricultural soil ranges between 144.5 μg/kg and 2355.0 μg/kg, and the PAHs concentration of paddy soil is higher than that of dry farmland. The PAHs of soil mainlycome fromcombustion of fossil fuel and petroleum plllution sources. The soil in this area is weakly contaminated by PAHs at present and it is showed that the ecologic risk of soil PAHs in this area is small. Source


Hao L.-B.,Jilin University | Sun L.-J.,Jilin University | Lu J.-L.,Jilin University | Sun S.-M.,Jilin Geological Survey Institute | And 2 more authors.
Jilin Daxue Xuebao (Diqiu Kexue Ban)/Journal of Jilin University (Earth Science Edition) | Year: 2010

The suspended solids are the main migration carrier of the heavy metals in rivers. The distribution characteristics of heavy metals of the suspended solids in the upper and middle reaches of the Second Songhua River are studied. The results show that content of heavy metals of the suspended solids varies remarkably in the upper and middle reaches of the Second Songhua River. In dry season minerals intensely absorbing heavy metals are enriched in the suspended solids, while in the wet season felsic minerals is main components carried. The content of the heavy metals in the suspended solids in dry season is higher than that in wet season. The content of As, Cu, Zn, Cd, Pb and Hg of in the suspended solids in Jilin urban sector is higher than that in Songhua Lake and the lower reach for industrial pollution. Source

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