Correlation of soil and sediment organic matter polarity to aqueous sorption of nonionic compounds

被引:115
作者
Kile, DE
Wershaw, RL
Chiou, CT
机构
[1] US Geol Survey, Boulder, CO 80303 USA
[2] US Geol Survey, Denver Fed Ctr, Denver, CO 80225 USA
关键词
D O I
10.1021/es980816o
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Polarities of the soil/sediment organic matter (SOM) in 19 soil and 9 freshwater sediment samples were determined from solid-state C-13-CP/MAS NMR spectra and compared with published partition coefficients (K-oc) of carbon tetrachloride (CT) from aqueous solution. Nondestructive analysis of whole samples by solid-state NMR permits a direct assessment of the polarity of SOM that is not possible by elemental analysis. The percent of organic carbon associated with polar functional groups was estimated from the combined fraction of carbohydrate and carboxyl-amide-ester carbons. A plot of the measured partition coefficients (K-oc) of carbon tetrachloride (CT) vs. percent polar organic carbon (POC) shows distinctly different populations of soils and sediments as well as a roughly inverse trend among the soil/sediment populations. Plots of K-oc values for CT against other structural group carbon fractions did not yield distinct populations. The results indicate that the polarity of SOM is a significant factor in accounting for differences in K-oc between the organic matter in soils and sediments. The alternate direct correlation of the sum of aliphatic and aromatic structural carbons with K-oc illustrates the influence of nonpolar hydrocarbon on solute partition interaction. Additional elemental analysis data of selected samples further substantiate the effect of the organic matter polarity on the partition efficiency of nonpolar solutes. The separation between soil and sediment samples based on percent POC reflects definite differences of the properties of soil and sediment organic matters that are attributable to diagenesis.
引用
收藏
页码:2053 / 2056
页数:4
相关论文
共 26 条
[1]   ATTEMPTS TO IMPROVE SOLID-STATE C-13 NMR-SPECTRA OF WHOLE MINERAL SOILS [J].
ARSHAD, MA ;
RIPMEESTER, JA ;
SCHNITZER, M .
CANADIAN JOURNAL OF SOIL SCIENCE, 1988, 68 (03) :593-602
[2]  
BALDOCK JA, 1992, BIOGEOCHEMISTRY, V16, P1, DOI 10.1007/BF02402261
[3]   PARTITION EQUILIBRIA OF NON-IONIC ORGANIC-COMPOUNDS BETWEEN SOIL ORGANIC-MATTER AND WATER [J].
CHIOU, CT ;
PORTER, PE ;
SCHMEDDING, DW .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1983, 17 (04) :227-231
[4]  
DUDLEY RL, 1990, CAN J SPECTROSC, V35, P31
[5]   Evaluation of soil organic matter polarity by pyrene fluorescence spectrum variations [J].
Ganaye, VA ;
Keiding, K ;
Vogel, TM ;
Viriot, ML ;
Block, JC .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (10) :2701-2706
[6]   INFLUENCE OF THE NATURE OF SOIL ORGANICS ON THE SORPTION OF TOLUENE AND TRICHLOROETHYLENE [J].
GARBARINI, DR ;
LION, LW .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1986, 20 (12) :1263-1269
[7]   EFFECTS OF STRUCTURAL AND COMPOSITIONAL VARIATIONS OF DISSOLVED HUMIC MATERIALS ON PYRENE KOC VALUES [J].
GAUTHIER, TD ;
SEITZ, WR ;
GRANT, CL .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1987, 21 (03) :243-248
[8]   INFLUENCE OF ORGANIC-MATTER FROM SOILS AND SEDIMENTS FROM VARIOUS ORIGINS ON THE SORPTION OF SOME CHLORINATED ALIPHATIC-HYDROCARBONS - IMPLICATIONS ON KOC CORRELATIONS [J].
GRATHWOHL, P .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1990, 24 (11) :1687-1693
[9]  
Hatcher P.G., 1981, ORG GEOCHEM, V3, P49, DOI DOI 10.1016/0146-6380(81)90013-9
[10]   A distributed reactivity model for sorption by soils and sediments .10. Relationships between desorption, hysteresis, and the chemical characteristics of organic domains [J].
Huang, WL ;
Weber, WJ .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1997, 31 (09) :2562-2569