Characteristics of the natural organic matter sorption affects of organic contaminants.
Several soil samples were used to study how the characteristics of natural organic matter (NOM) affect sorption of organic compounds. These soils contains different amounts and types of NOM. Aromaticity of NOM (percentage of aromatic carbons) was determined from solid-state CPMAS 13C NMR spectra and the soil effective polarity was computed from the equation developed by Xing et al. Naphthalene was used to examine the sorption characteristics of NOM. Both aromaticity and polarity of NOM strongly affected sorption of naphthalene. Old NOM showed higher affinity than that in the surface, young soils. Sorption increased with increasing aromaticity and decreasing polarity. Thus, the sorption coefficients of organic contaminants cannot be accurately predicted without some consideration of NOM characteristics.
Liu
Xiao-Bing
XB
Heilongjiang Institute of Agricultural Modernization, Chinese Academy of Sciences, Harbin 150040, China.
Song
Chun-Yu
CY
Xing
Bao-Shan
BS
D000327:Adsorption; D006841:Hydrocarbons, Aromatic / Q000032:analysis / Q000737:chemistry; D008956:Models, Chemical; D009281:Naphthalenes / Q000032:analysis* / Q000737:chemistry; D009930:Organic Chemicals / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis*; D012995:Solubility; D014873:Water Pollutants / Q000032:analysis*
D006841:Hydrocarbons, Aromatic; D009281:Naphthalenes; D009930:Organic Chemicals; D012989:Soil Pollutants; D014873:Water Pollutants; C031721:naphthalene