Influence of exogenous sulfur-containing compounds on the exchange fluxes of volatile organic sulfur compounds

The influences of cysteine, sodium sulfide (Na2S) and sodium sulfate (Na2SO4) on the soil-air exchange fluxes of volatile organic sulfur compounds (VOSCs), including carbonyl sulfide (COS), dimethyl sulfide (DMS), carbon disulfide (CS2) and dimethyl disulfide (DMDS), were studied employing static ch...

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Bibliographic Details
Published inHuanjing kexue Vol. 32; no. 8; p. 2236
Main Authors Yi, Zhi-Gang, Wang, Xin-Ming
Format Journal Article
LanguageChinese
Published China 01.08.2011
Subjects
Cysteine - chemistry
Soil - analysis
Soil Pollutants - analysis
Soil Pollutants - chemistry
Sulfides - analysis
Sulfides - chemistry
Sulfur Compounds - analysis
Sulfur Compounds - chemistry
Sulfur Oxides - analysis
Sulfur Oxides - chemistry
Volatile Organic Compounds - analysis
Volatilization
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Summary:The influences of cysteine, sodium sulfide (Na2S) and sodium sulfate (Na2SO4) on the soil-air exchange fluxes of volatile organic sulfur compounds (VOSCs), including carbonyl sulfide (COS), dimethyl sulfide (DMS), carbon disulfide (CS2) and dimethyl disulfide (DMDS), were studied employing static chamber enclosure followed by laboratory determination using an Entech 7100 preconcentrator coupled with an Agilent 5973 GC-MSD. The results showed that after the addition of cysteine, the soil for the exchange fluxes of COS and CS2 shifted to be the source from sink and the emissions of DMS and DMDS increased significant. The emission amount of DMS and CS2 accounted for 89.2% to the total VOSCs after the addition of cysteine, implying that cysteine is an important precursor for DMS and CS2 in the soil. The amount of DMDS accounted for 93.2% to the total sulfur from the soil after addition of Na2S, indicating that Na2S is a key precursor for DMDS. No significant difference of VOSCs fluxes was found between the contro
ISSN:0250-3301