TY  - JOUR
AU  - Singh, N.
AU  - Berns, A. E.
AU  - Hennecke, D.
AU  - Hörner, J.
AU  - Kördel, W.
AU  - Schäffer, A.
TI  - Effect of soil organic matter chemistry on sorption of trinitrotoluene and 2,4-dinitrotoluene
JO  - Journal of hazardous materials
VL  - 173
SN  - 0304-3894
CY  - New York, NY [u.a.]
PB  - Science Direct
M1  - PreJuSER-11660
PY  - 2010
N1  - Neera Singh was supported by a research fellowship from the Alexander von Humboldt Foundation, Bonn, Germany.
AB  - The sorption of organic contaminants in soil is mainly attributed to the soil organic matter (SOM) content. However, recent studies have highlighted the fact that it is not the total carbon content of the organic matter, but its chemical structure which have a profound effect on the sorption of organic contaminants. In the present study sorption of two nitroaromatic contaminants viz. trinitrotoluene (TNT) and 2,4-dinitrotoluene (2,4-DNT) was studied in different SOM fractions viz. a commercial humic acid, commercial lignin and humic acid and humin extracted from a compost. (13)C-DP/MAS NMR studies indicated that the structural composition of the organic carbon in different SOM fractions was different. The order of sorption of the nitroaromatics in the different sorbents was: humic acid-commercial>humic acid-compost>humin approximately lignin. Among the aliphatic and aromatic carbon fractions (representing bulk of SOM matrix), adsorption parameter K(f)(1/n) for nitroaromatics sorption correlated well with the aliphatic carbon (r=0.791 for TNT and 0.829 for 2,4-DNT) than the aromatic carbon (r=0.634 for TNT and r=0.616 for 2,4-DNT). However, among carbon containing functional groups, carbonyl carbon showed strong positive correlation with sorption of TNT (r=0.991) and 2,4-DNT (r=0.967) while O-alkyl carbon showed negative correlation (r=0.832 for TNT and r=0.828 for 2,4-DNT). The study indicates that aliphatic domains in the SOM significantly affect the non-specific sorption of both the nitroaromatic contaminants.
KW  - Adsorption
KW  - Chelating Agents: analysis
KW  - Chromatography, High Pressure Liquid
KW  - Dinitrobenzenes: chemistry
KW  - Explosive Agents: analysis
KW  - Humic Substances: analysis
KW  - Lignin
KW  - Magnetic Resonance Spectroscopy
KW  - Soil: analysis
KW  - Spectrophotometry, Ultraviolet
KW  - Trinitrotoluene: chemistry
KW  - Chelating Agents (NLM Chemicals)
KW  - Dinitrobenzenes (NLM Chemicals)
KW  - Explosive Agents (NLM Chemicals)
KW  - Humic Substances (NLM Chemicals)
KW  - Soil (NLM Chemicals)
KW  - Trinitrotoluene (NLM Chemicals)
KW  - 2,3-dinitrotoluene (NLM Chemicals)
KW  - Lignin (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:19748732
UR  - <Go to ISI:>//WOS:000273135600047
DO  - DOI:10.1016/j.jhazmat.2009.08.090
UR  - https://juser.fz-juelich.de/record/11660
ER  -