Shipboard measurements of atmospheric dimethylsulfide and hydrogen sulfide in the Caribbean and Gulf of Mexico

Saltzman, E. S.; Cooper, David J.

doi:10.1007/bf00048046

Cited by 81 publications

(46 citation statements)

References 30 publications

(22 reference statements)

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“…The preparation of these standards was described by Saltzman and Cooper (1988). The relative standard deviation of both replicate DMS standards and atmospheric samples is better than k 6%.…”

Section: Methodsmentioning

confidence: 99%

“…Several samples were also taken for atmospheric H,S using the AgNO, filter method, modified according to Saltzman and Cooper (1988). These were collected as duplicate samples with back-up filters to correct for OCS interference (Cooper and Saltzman, 1987).…”

Section: Methodsmentioning

confidence: 99%

“…The limited aircraft measurements fall at the low end of this range (Ferek et al, 1986;Andreae et al, 1988). These mixing ratios, combined with laboratory reaction rate measurements and product studies, indicate that the oxidation of DMS is the major natural source of atmospheric SO, and sulfate over the oceans (Andreae, 1986;Ayers, 1986;Saltzman and Cooper, 1988).…”

Section: Introductionmentioning

confidence: 92%

“…The most recent gas exchange models predict a sea/air flux of about 22 Tg S/yr (Bates et al, 1987). Shipboard measurements of DMS in the atmosphere have confirmed that DMS is present in the marine boundary layer at mixing ratios spanning a range of zero to more than 1 ppbv (Andreae et al, 1985;Saltzman and Cooper, 1988). The limited aircraft measurements fall at the low end of this range (Ferek et al, 1986;Andreae et al, 1988).…”

Section: Introductionmentioning

confidence: 93%

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Measurements of atmospheric dimethyl sulfide and carbon disulfide in the western Atlantic boundary layer

Cooper

Saltzman

1991

J Atmos Chem

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 93%

See 2 more Smart Citations

Measurements of atmospheric dimethyl sulfide and carbon disulfide in the western Atlantic boundary layer

Cooper

Saltzman

1991

J Atmos Chem

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“…1,2 It is, therefore, of interest to develop a simple and rapid method for the determination of this pollutant. Different methods have been used for the determination of carbon disulfide in water, including spectrophotometry, [3][4][5][6] chromatography, [6][7][8] GC-flame photometric, 9 and -mass spectrophotometric 10 methods. Of these methods, spectrophotometric methods have been shown to be more simple than the other methods.…”

mentioning

confidence: 99%

Determination of Trace Amount of Carbon Disulfide in Water by the Spectrophotometric Reaction-Rate Method

2003

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The most widely used procedures for determining dithiocarbamate and tetramethylthiuram disulfide fungicide residues involve a spectrophotometric determination of CS2 after hot acid digestion of the sample. Accurate measurements of the ambient carbon disulfide concentration in industrial waste water and in an industrial atmosphere are necessary to protect the health of workers. Among the deleterious effects of chronic CS2 intoxication are vitamin B6 deficiency, depletion of the levels of essential trace metals, such as Cu and Zn, and an intensification of the development of atherosclerosis. 1,2 It is, therefore, of interest to develop a simple and rapid method for the determination of this pollutant. Different methods have been used for the determination of carbon disulfide in water, including spectrophotometry, 3-6 chromatography, 6-8 GC-flame photometric, 9 and -mass spectrophotometric 10 methods. Of these methods, spectrophotometric methods have been shown to be more simple than the other methods. The most widely used procedure for determining CS2 by spectrophotometry is the adsorption of CS2 in a copper-diethanolamine reagent, that yields a yellow complex.3 This method cannot quantify the CS2 concentration below 2 µg/ml. 6 The other spectrophotometric methods 4-6 have a high limit of detection, a short linear dynamic range and are time consuming.To our knowledge, there has not been any report concerning the kinetic-spectrophotometric method for the determination of trace amounts of CS2. The proposed method is described as a kinetic method based on an induction effect of CS2 on the oxidation of sodium azide by triiodide that is monitored spectrophotometrically. Experimental Reagents and chemicalsAll of chemicals used were of analytical-reagent grade and doubly distilled water was used.Carbon disulfide (100 µg/ml) was prepared by adding 0.108 ml CS2 (Merck) to water in a volumetric flask.A triiodide stock solution (1.0 mM) was prepared by adding 0.0254 g of I2 to 0.45 g of KI and dissolved in 100 ml of water in a volumetric flask. The resulting solution was standardized by sodium thiosulfate method.A stock solution of 2.50 M sodium azide solution was prepared by dissolving 25.5 g of NaN3 (Merck) in water and diluting in a 100-ml volumetric flask. ApparatusA UV-VIS Spectronic 20 (Genesys) with a 1.0 cm glass cuvette was used to measure the absorbance at 350 nm. A thermostat (Gallen Kamp Griffin, BJ-240 V) was used to keep the reaction temperature at 30˚C.A column (10 × 5 mm) containing 1.0 g of active carbon was used in the separation of CS2 from sample solutions by passing a 1000 ml solution containing of CS2 plus other cations through the column at a flow rate of 100 ml/h. The column was then washed with 10 ml of a mixture of (50:50) isoamyl acetate/ethanol at a flow rate of 50 ml/h. ProcedureAll of the solutions were preheated to the working temperature (30˚C) in a thermostat water bath for 30 min before initiating the experiment.The reaction was followed spectrophotometrically by monitoring the decrease in t...

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Tropospheric Chemistry: 4 Years of U.S. Research, 1987–1990

Jacob

1991

Reviews of Geophysics

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Shipboard measurements of atmospheric dimethylsulfide and hydrogen sulfide in the Caribbean and Gulf of Mexico

Cited by 81 publications

References 30 publications

Measurements of atmospheric dimethyl sulfide and carbon disulfide in the western Atlantic boundary layer

Measurements of atmospheric dimethyl sulfide and carbon disulfide in the western Atlantic boundary layer

Determination of Trace Amount of Carbon Disulfide in Water by the Spectrophotometric Reaction-Rate Method

Tropospheric Chemistry: 4 Years of U.S. Research, 1987–1990

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