Concentrations and distribution of metals in the core sediments from estuary and city section of Liaohe River

被引：0

作者：

Wang W.-J. ^{[1
]}

Zhou J.-L. ^{[1
]}

Pei S.-W. ^{[1
]}

Liu Z.-T. ^{[1
]}

机构：

[1] State Environmental Protection Key Laboratory of Ecological Effects and Risk Assessment of Chemicals, Chinese Research Academy of Environmental Sciences, Beijing

来源：

Zhou, Jun-Li (zhoujl@craes.org.cn) | 2016年 / Science Press卷 / 37期

关键词：

Core sediment; Liaohe River; Metal; Organic matter; Vertical distribution;

D O I：

10.13227/j.hjkx.2016.01.021

中图分类号：

学科分类号：

摘要：

The particle size, total organic carbon (TOC), total nitrogen (TN), C/N ratio and metal concentrations as well as activities of 210Pb were determined in Liaohe River estuary area (LN-2) and Shenyang area (LN-5), and the organic matter resources were discussed in two core sediments. Also the index of geoaccumulation (Igeo) and enrichment factors (EFs) methods were applied to evaluate the state of heavy metal contamination in the studied sties. The study showed that both sediment cores LN-2 and LN-5 were dominated by silts, and the vertical variations of grain-size composition and organic matter were well distributed in LN-2 while fluctuated in LN-5.According to the organic matter source analysis through C/N ratio, C/N ratio varied in the scale of 5.24-7.93 in LN-2 which was dominated by river source, and 9.94-14.21 in LN-5 which was dominated by terrestrial input. Al, Ca, Fe, Mn, Ni, Cu, Zn, Cd, Pb and Cr in two sediment cores had different vertical changing rules, Ni and Zn in LN-2 as well as Pb and Zn in LN-5 were affected by both natural and human factors, other elements had similar distributions to those of organic matters, which showed that these elements were mainly affected by the natural activities. Based on Igeo and EFs, both sediment cores were more severely polluted with Ni, Zn and Pb than other metals. The effects of human activities on the environment were also discussed in this study, combined with the economical development of Liaoning Province and the studied sites in the past 20 years. © 2016, Science Press. All right reserved.

引用

页码：156 / 165

页数：9

共 24 条

[1] Meybeck M., Pathways of major elements from land to oceans through rivers, River Inputs to Ocean Systems, pp. 18-30, (1981)
[2] Palmer S.M., Hope D., Billett M.F., Et al., Sources of organic and inorganic carbon in a headwater stream: Evidence from carbon isotope studies, Biogeochemistry, 52, 3, pp. 321-338, (2001)
[3] Bird M.I., Fyfe W.S., Pinheiro-Dick D., Et al., Carbon isotope indicators of catchment vegetation in the Brazilian Amazon, Global Biogeochemical Cycles, 6, 3, pp. 293-306, (1992)
[4] Hedges J.I., Clark W.A., Quay P.D., Et al., Compositions and fluxes of particulate organic material in the Amazon River, Limnology and Oceanography, 31, 4, pp. 717-738, (1986)
[5] Masson M., Blanc G., Schafer J., Geochemical signals and source contributions to heavy metal (Cd, Zn, Pb, Cu) fluxes into the Gironde Estuary via its major tributaries, Science of the Total Environment, 370, 1, pp. 133-146, (2006)
[6] Osher L.J., Leclerc L., Wiersma G.B., Et al., Heavy metal contamination from historic mining in upland soil and estuarine sediments of Egypt Bay, Maine, USA, Estuarine, Coastal and Shelf Science, 70, 1-2, pp. 169-179, (2006)
[7] Mil-Homens M., Stevens R.L., Abrantes F., Et al., Heavy metal assessment for surface sediments from three areas of the Portuguese continental shelf, Continental Shelf Research, 26, 10, pp. 1184-1205, (2006)
[8] Appleby P.G., Nolan P.J., Gifford D.W., Et al., <sup>210</sup>Pb dating by low background gamma counting, Hydrobiologia, 143, 1, pp. 21-27, (1986)
[9] Erlinger C., Lettner H., Hubmer A., Et al., Determining the Chernobyl impact on sediments of a pre-Alpine lake with a very comprehensive set of data, Journal of Environmental Radioactivity, 99, 8, pp. 1294-1301, (2008)
[10] Meyers P.A., Preservation of elemental and isotopic source identification of sedimentary organic matter, Chemical Geology, 144, 3, pp. 289-302, (1994)

← 1 2 3 →