Determination of Low Level Sulfides in Environmental Waters by Automated Gas Dialysis/Methylene Blue Colorimetry

Francom, Donna M.; Goodwin, Lorne R.; Dieken, Fred P.

doi:10.1080/00032718908052377

Cited by 10 publications

(2 citation statements)

References 9 publications

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“…Automated continuous-flow analysis methods with varying degrees of sensitivity (LOD as low as 0.4 Mg/L), specificity, and reproducibility and relying variously on luminometry (1)(2)(3)(4), amperometry (5,6), potentiometry (7-9), atomic (10) and molecular absorption spectrometry (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21), and molecular emission spectrometry (22,23) have been reported in the literature for quantifying sulfide. Compatibility with a sample matrix such as that of raw wastewater adds a different dimension to this problem.…”

mentioning

confidence: 99%

Nitroprusside and methylene blue methods for silicone membrane differentiated flow injection determination of sulfide in water and wastewater

Kubáň¹,

Dasgupta²,

Marx³

1992

Anal. Chem.

122

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Hydrogen sulfide evolved from an acidified sample is pre-concentrated by permeation in a stationary alkaline acceptor solution enclosed in a silicone rubber sample loop. Depending on the sample volume pre-concentrated, the applicable analytical range spans low micrograms/L to tens of mg/L for both methods. The methylene blue method is more sensitive by a factor of approximately 30 and actually permits practical determinations in the sub-micrograms/L levels. The limit of detection (LOD) for the nitroprusside method ranges from 20 micrograms/L for a 20 microL sample by conventional flow-injection determination (no membrane, throughput 30 samples/h) to less than 2 micrograms/L for 12 mL sample pre-concentrated in the membrane system (throughput 5 samples/h). The membrane is highly resistant to fouling and permits analysis of untreated wastewater samples bearing suspended solids, oil, grease, etc. without any pretreatment. No significant interference is observed with either chemistry. Although the nitroprusside chemistry is less sensitive, it does not involve the use of concentrated aggressive reagents and is recommended unless ultratrace determinations are essential. Viable reaction mechanisms are proposed for both of these chemistries.

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mentioning

confidence: 99%

Nitroprusside and methylene blue methods for silicone membrane differentiated flow injection determination of sulfide in water and wastewater

Kubáň¹,

Dasgupta²,

Marx³

1992

Anal. Chem.

122

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“…Clearly the level of sulfide in industrial and municipal wastewaters has a tremendous impact on public acceptance and safety as well as the longevity of concrete infrastructure. Unfortunately, the standard methods presently used to analyze for sulfide are difficult to automate and suffer from numerous chemical interferences and solution turbidity ( , ). More importantly, without extensive pretreatment (), these methods generally detect sulfide only if it is present in quantities greater than 1 mg L -1 .…”

Section: Introductionmentioning

confidence: 99%

Low Parts per Billion Determination of Sulfide by Coulometric Argentometry

Pierce

Applebee

Lacher

et al. 1998

Environ. Sci. Technol.

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Present methods for the determination of sulfide in wastewater are hindered by poor detection limits and extensive sample pretreatment. A less problematic method has been developed with a method detection limit of 2.5 μg L-1. With this technique, sparged hydrogen sulfide is precipitated in an acetate-supporting electrolyte by electrogenerated silver ions. Analysis of base-preserved samples was performed with no pretreatment other than volumetric dilution. Metals, halides, and nitrogen-base salts were studied as possible interferences to the method. Direct comparisons with the standard methylene blue method were made for both municipal and industrial wastewaters. The present method was found to be far less inhibited by sample turbidity.

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Galvanic sensor for the determination of hydrogen sulphide/sulphide in aqueous media

Jeroschewski

Haase

Trommer

et al. 1993

Fresenius J Anal Chem

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Determination of Low Level Sulfides in Environmental Waters by Automated Gas Dialysis/Methylene Blue Colorimetry

Cited by 10 publications

References 9 publications

Nitroprusside and methylene blue methods for silicone membrane differentiated flow injection determination of sulfide in water and wastewater

Nitroprusside and methylene blue methods for silicone membrane differentiated flow injection determination of sulfide in water and wastewater

Low Parts per Billion Determination of Sulfide by Coulometric Argentometry

Galvanic sensor for the determination of hydrogen sulphide/sulphide in aqueous media

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