Field experience with ambient-level flame-photometric sulphur detectors

Weber, David E.; Olsen, K.B.; Ludwick, J.D.

doi:10.1016/0039-9140(80)80206-2

Cited by 11 publications

(6 citation statements)

References 4 publications

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“…The addition of sulfur compounds at a constant background concentration has been used to linearize the FPD output and decrease the detection limit but decrease the dynamic range. When used as a real-time detector for atmospheric monitoring, the FPD suffers from H20 and C02 interference (12). Hydrocarbons are the major source of interference in gas chromatographic uses (10).…”

Section: Introductionmentioning

confidence: 99%

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Universal sulfur detection by chemiluminescence

Benner¹,

Stedman²

1989

Anal. Chem.

105

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This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

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Section: Introductionmentioning

confidence: 99%

“…Changing the C02 concentration from 350 ppmv to 1700 ppmv produced no detectable change in response to S02 in the USD. The same C02 concentration variation would be expected to reduce a FPD response by 80% (12). In chromatographic analysis, two compounds that commonly coelute are methyl ethyl sulfide (MES) and hexane.…”

Section: Introductionmentioning

confidence: 99%

Universal sulfur detection by chemiluminescence

Benner¹,

Stedman²

1989

Anal. Chem.

105

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“…None of the sulfur analyzers experienced any measurable concentration or sensitivity interference from C02. According to the literature, a C02 interference should have been observed as the C02 mixing ratios changed over the observed range of 400-700 ppmv (8). It happened, however, that all occurrences of sulfur greater than the noise level of the FPD (~2 ppbv) occurred when C02 mixing ratios were close to 400 ppmv.…”

Section: Resultsmentioning

confidence: 94%

Field evaluation of the sulfur chemiluminescence detector

Benner¹,

Stedman²

1990

Environ. Sci. Technol.

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“…The shift in pH and color of the absorption solution causes an increase in the amount of light striking a photodiode detector whose output is fed back to the cell as a titration current. At the cathode, hydroxide is produced to neutralize the acid formed in reaction [ 1 ]. The rate of formation of hydroxide at the cathode is equivalent to the rate of formation of the sulfuric acid.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The method presented here is intended for the analysis of cylinder gas mixtures of SO 2 in nitrogen. The determination of SO 2 has been accomplished by a variety of techniques [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Most of the methods are time consuming, employ expensive instrumentation, and need sample pretreatment.…”

Section: Introductionmentioning

confidence: 99%

Accurate and precise coulometric determination of sulfur dioxide in compressed gas mixtures

Mitchell

Bell

1991

J. RES. NATL. INST. STAN.

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Coulometry has been established as an important and reliable method for the determination of acidic compounds. The analytical method and simple apparatus described here arc applied to the precise and accurate determination of sulfur dioxide in nitrogen, specifically in compressed gas cylinders at nominal concentrations of 50 and 100 µmol/mol (ppm). This method is constant current coulometry where the magnitude of the current is set by the balance between the electrochemical generation of OH−, the flow of SO2, and the chemical reaction of the solution. The method is direct, rapid, and can be refined further to provide analysis at the nanomol/mol level.

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Field experience with ambient-level flame-photometric sulphur detectors

Cited by 11 publications

References 4 publications

Universal sulfur detection by chemiluminescence

Universal sulfur detection by chemiluminescence

Field evaluation of the sulfur chemiluminescence detector

Accurate and precise coulometric determination of sulfur dioxide in compressed gas mixtures

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