Chemiluminescence from the reactions of ozone with sulphur compounds

Arora, P. K.; Chatha, J. P. S.

doi:10.1139/v84-073

Cited by 8 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These compounds are subsequently mixed with the substrate that remained outside of the irradiated volume and some of them may react within the time of residence or during sampling for analysis. During ozonolysis, a brown colored oil deposited in the annular reactor 60 which could be dissolved in acetonitrile for GC/MS-analysis. It contained, in addition to the oxidation products already mentioned, 2,2′-methylenedithiophene (25), 3-(2-thienyl)-2propenal (26) and diethylsulfone (27, compounds drawn in red in Schemes 5 and 6).…”

Section: Intermediate Products Of the Reaction Pathways To The Minera...mentioning

confidence: 99%

Continuous process of the vacuum ultraviolet- (VUV-) photochemical oxidation of thiophene in the gas phase

Andriampanarivo

Köhler

López‐Gejo

et al. 2015

Photochem Photobiol Sci

View full text Add to dashboard Cite

Thiophene was taken as a model compound for investigations on the efficiency of a continuous process of the vacuum-ultraviolet- (VUV-) photochemically initiated oxidation and mineralization of sulfur containing organic compounds in the gas phase. In the presence of molecular oxygen, atomic oxygen and ozone were photochemically generated and are assumed to initiate or participate in the (thermal) oxidation network. Addition of water vapor for an additional initiation of the oxidation by hydroxyl radicals did not accelerate the process. For comparison, thiophene was exposed to ozone and oxidized under otherwise the same experimental conditions, but complete mineralization was only found in the photochemical process and for relatively small concentrations of the substrate. The result may be explained by low rates of secondary thermal reactions of a number of identified intermediate products. Combining already published results and mechanistic hypotheses with the results of the present work, pathways of oxidative degradation are proposed. The photolysis of thiophene in molecular nitrogen confirmed earlier findings.

show abstract

Section: Intermediate Products Of the Reaction Pathways To The Minera...mentioning

confidence: 99%

Continuous process of the vacuum ultraviolet- (VUV-) photochemical oxidation of thiophene in the gas phase

Andriampanarivo

Köhler

López‐Gejo

et al. 2015

Photochem Photobiol Sci

View full text Add to dashboard Cite

show abstract

“…Akimoto et al [lO] reported that the emitting species from the reactions of 03 with H2S, CH3SH, and CH3SCH 3 is SO 2. Becker et al [Ill briefly examined the chemiluminescence from the reactions of 03 with CH3SCH 3 and (CH3S) 2, Arora and Chatha [12] observed emission from electronically excited SO 2 produced in the gas-phase reaction of 03 with thiophene, diallyl sulfide, diallyl disulfide, CH3SCH 3, (CH3S) 2, and thiophenol. Glinski et al [13,14] have observed emission from the reaction of 03 with CH3SH ,andGlinski and Dixon [15] observed emission from the reactions of 03 with (CH3S) 2 and (CH3)2S0.…”

Section: Reactions With 03mentioning

confidence: 99%

The gas-phase oxidation of organic sulfur compounds

Heicklen

1985

Res Chem Intermed

View full text Add to dashboard Cite

“…An alternative strategy for measuring DMS is using gas phase chemiluminescence (CL) based on the chain reaction of DMS with ozone to form the sulfur monoxide radical (SO⋅), which then reacts with ozone to produce light with a wavelength maximum (λ max ) at 370 nm [25,26]. The reaction is summarized in eq.…”

Section: Introductionmentioning

confidence: 99%

Automated, high frequency, on-line dimethyl sulfide measurements in natural waters using a novel “microslug” gas-liquid segmented flow method with chemiluminescence detection

Leng

Jin

Bell

et al. 2021

Talanta

View full text Add to dashboard Cite

Dimethyl sulfide (DMS) is the major biogenic volatile sulfur compound in surface seawater. Good quality DMS data with high temporal and spatial resolution are desirable for understanding reduced sulfur biogeochemistry.Here we present a fully automated and novel "microslug" gas-liquid segmented flow-chemiluminescence (MSSF-CL) based method for the continuous in-situ measurement of DMS in natural waters. Samples were collected into a flow tank and DMS transferred from the aqueous phase to the gas phase using a vario-directional coiled flow, in which microvolume liquid and gas slugs were interspersed. The separated DMS was reacted with ozone in a reaction cell for CL detection. The analytical process was automated, with a sample throughput of 6.6 h − 1 . Using MSSF for DMS separation was more effective and easily integrated with CL detection compared with the commonly used bubbling approach. Key parameters of the proposed method were investigated. The linear range for the method was 0.05-500 nM (R 2 = 0.9984) and the limit of detection (3 x S/N) was 0.015 nM, which is comparable to the commonly used gas chromatography (GC) method and sensitive enough for direct DMS measurement in typical aquatic environments. Reproducibility and recovery were assessed by spiking natural water samples (river, lake, reservoir and pond) with different concentrations of DMS (10, 20 and 50 nM), giving relative standard deviations (RSDs) ≤1.75% (n = 5) and recoveries of 94.4-107.8%. This fully automated system is reagent free, easy to assemble, simple to use, portable (weight ~5.1 kg) and can be left in the field for several hours of unattended operation. The instrumentation can provide high quality DMS data for natural waters with an environmentally relevant temporal resolution of ~9 min.

show abstract

Chemiluminescence from the reactions of ozone with sulphur compounds

Cited by 8 publications

References 17 publications

Continuous process of the vacuum ultraviolet- (VUV-) photochemical oxidation of thiophene in the gas phase

Continuous process of the vacuum ultraviolet- (VUV-) photochemical oxidation of thiophene in the gas phase

The gas-phase oxidation of organic sulfur compounds

Automated, high frequency, on-line dimethyl sulfide measurements in natural waters using a novel “microslug” gas-liquid segmented flow method with chemiluminescence detection

Contact Info

Product

Resources

About