Ecotoxicity of soils contaminated with industrial and domestic wastewater in western Shenyang, China

Soil samples were collected from 7 sites in the up-, mid- and down-reach along and nearby the wastewater irrigation channel, western Shenyang of China. The concentrations of selected pollutants (mineral oil, PAHs - polycycle aromatic hydrocarbons and Cd) were determined by UV spectrometer, HPLC and AAS (atomic adsorption spectrometer) spectrometer, respectively. Toxicity effects of soils were evaluated by seedling emergence test with root length of wheat as the end-point and by earthworms test with the mortality rate and inhibition rates of body weight as endpoints. Results showed accumulation of pollutants for most soils with concentration of 200.2 mg.kg-1 ～1600 mg.kg-1 for mineral oil, 0.33 mg.kg-1～1.81 mg.kg-1 for Cd and 900.16 mg.kg-1～ 2737.91 mg.kg-1 for PAHs. The inhibition rates of root elongation were from -20% up to 40 %, and mortality rates of earthworms ranged from 0%～40% from the exposure period of two weeks to eight weeks by sampling interval of two weeks, the inhibition rates of earthworm growth were from -19.36% to 34.53%, showing effects of stimulation at 2 weeks to an increasing effects of inhibition at 4, 6 and 8 weeks, respectively. Mortality rates correlated with the loss of body weight of earthworms.This study indicated the potential risk of pollutants of environmental low content in soil by the determination of selected chemicals combined with toxicity indexes.

作 者： SONG Yufang ZHOU Qixing GONG Ping SUN Tieheng   作者單位： SONG Yufang,ZHOU Qixing(Key Laboratory of Terrestrial Ecological Processes, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016,China)

GONG Ping(Analytical Services, Inc., 3909 Halls Ferry Road, Vicksburg, Mississippi 39180, USA)

SUN Tieheng(Key Laboratory of Terrestrial Ecological Processes, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016,China;Key Laboratory of Environmental Engineering of Shenyang, Shenyang University, Shenyang 110041, China) 

刊 名： 中國科學C輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA SERIES C(LIFE SCIENCES)  年，卷(期)： 2005 48(z1)  分類號： X7  關鍵詞： soil   pollutants   wastewater irrigation   phyotoxicity   earthworm test  

【Ecotoxicity of soils contaminated wi】相關文章：

Phytoremediation and its models for organic contaminated soils04-26

Electrokinetic removal of chromium and copper from contaminated soils by lactic acid enhancement in the catholyte04-25

Impact of Seasalt Deposition on Acid Soils in Maritime Regions04-27

Bioremediation of Soil Contaminated with Petroleum Using Forced-Aeration Composting04-27

Effects of methamidophos and glyphosate on copper sorption-desorption behavior in soils04-25

Relation of Mineralizable N to Organic N Components in Dark Loessial Soils04-27

Electrochemical remediation of copper contaminated kaolinite by conditioning anolyte and catholyte pH simultaneously04-26

Rapid degradation of bensulfuron-methyl upon repeated application in paddy soils04-26

Interactions of Cations with Electrodialyzed Clay Fraction of Soils as Inferred from Wien Effect in Soil Suspensions04-27

ORC-GAC-Fe0 system for the remediation of trichloroethylene and monochlorobenzene contaminated aquifer:1.Adsorption and04-26