An amperometric microsensor for the determination off H2S in aquatic environments

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

An amperometric microsensor for the determination off H2S in aquatic environments. / Jeroschewski, P.; Steuckart, C.; Kühl, M.

In: Analytical Chemistry, Vol. 68, No. 24, 1996, p. 4351-4357.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Jeroschewski, P, Steuckart, C & Kühl, M 1996, 'An amperometric microsensor for the determination off H2S in aquatic environments', Analytical Chemistry, vol. 68, no. 24, pp. 4351-4357. https://doi.org/10.1021/ac960091b

APA

Jeroschewski, P., Steuckart, C., & Kühl, M. (1996). An amperometric microsensor for the determination off H2S in aquatic environments. Analytical Chemistry, 68(24), 4351-4357. https://doi.org/10.1021/ac960091b

Vancouver

Jeroschewski P, Steuckart C, Kühl M. An amperometric microsensor for the determination off H2S in aquatic environments. Analytical Chemistry. 1996;68(24):4351-4357. https://doi.org/10.1021/ac960091b

Author

Jeroschewski, P. ; Steuckart, C. ; Kühl, M. / An amperometric microsensor for the determination off H2S in aquatic environments. In: Analytical Chemistry. 1996 ; Vol. 68, No. 24. pp. 4351-4357.

Bibtex

@article{e86f1f3889124c718d2bf18d21be0daf,
title = "An amperometric microsensor for the determination off H2S in aquatic environments",
abstract = "A new amperometric microsensor for detection of dissolved H2S in aquatic environments was developed. The design of the microsensor is based on the same principle as the dark-type oxygen microsensor. The sensor is equipped with a glass-coated platinum working electrode and a platinum guard electrode positioned in an outer glass casing (tip diameter 20-100 μm). Both working electrode and guard electrode were polarized at a fixed value in the range from +85 to + 150 mV with respect to a counter electrode. The outer casing is sealed with a thin silicone membrane and filled with a buffered electrolyte solution containing ferricyanide (K3[Fe(CN)6]) as redox mediator. Hydrogen sulfide penetrates the silicone membrane and is oxidized by K3[Fe(CN)6], resulting in the formation of elemental sulfur and ferrocyanide (K4-[Fe(CN)6]). The latter is electrochemically reoxidized at the exposed end of the platinum working electrode, thereby creating a current that is directly proportional to the dissolved H2S concentration at the sensor tip. The sensor was characterized and calibrated in a flow-through cell combined with a coulometric sulfide generator. Difficult studies including the determination of H2S with high spatial and temporal resolution seem to be possible.",
author = "P. Jeroschewski and C. Steuckart and M. K{\"u}hl",
year = "1996",
doi = "10.1021/ac960091b",
language = "English",
volume = "68",
pages = "4351--4357",
journal = "Industrial And Engineering Chemistry Analytical Edition",
issn = "0003-2700",
publisher = "American Chemical Society",
number = "24",

}

RIS

TY - JOUR

T1 - An amperometric microsensor for the determination off H2S in aquatic environments

AU - Jeroschewski, P.

AU - Steuckart, C.

AU - Kühl, M.

PY - 1996

Y1 - 1996

N2 - A new amperometric microsensor for detection of dissolved H2S in aquatic environments was developed. The design of the microsensor is based on the same principle as the dark-type oxygen microsensor. The sensor is equipped with a glass-coated platinum working electrode and a platinum guard electrode positioned in an outer glass casing (tip diameter 20-100 μm). Both working electrode and guard electrode were polarized at a fixed value in the range from +85 to + 150 mV with respect to a counter electrode. The outer casing is sealed with a thin silicone membrane and filled with a buffered electrolyte solution containing ferricyanide (K3[Fe(CN)6]) as redox mediator. Hydrogen sulfide penetrates the silicone membrane and is oxidized by K3[Fe(CN)6], resulting in the formation of elemental sulfur and ferrocyanide (K4-[Fe(CN)6]). The latter is electrochemically reoxidized at the exposed end of the platinum working electrode, thereby creating a current that is directly proportional to the dissolved H2S concentration at the sensor tip. The sensor was characterized and calibrated in a flow-through cell combined with a coulometric sulfide generator. Difficult studies including the determination of H2S with high spatial and temporal resolution seem to be possible.

AB - A new amperometric microsensor for detection of dissolved H2S in aquatic environments was developed. The design of the microsensor is based on the same principle as the dark-type oxygen microsensor. The sensor is equipped with a glass-coated platinum working electrode and a platinum guard electrode positioned in an outer glass casing (tip diameter 20-100 μm). Both working electrode and guard electrode were polarized at a fixed value in the range from +85 to + 150 mV with respect to a counter electrode. The outer casing is sealed with a thin silicone membrane and filled with a buffered electrolyte solution containing ferricyanide (K3[Fe(CN)6]) as redox mediator. Hydrogen sulfide penetrates the silicone membrane and is oxidized by K3[Fe(CN)6], resulting in the formation of elemental sulfur and ferrocyanide (K4-[Fe(CN)6]). The latter is electrochemically reoxidized at the exposed end of the platinum working electrode, thereby creating a current that is directly proportional to the dissolved H2S concentration at the sensor tip. The sensor was characterized and calibrated in a flow-through cell combined with a coulometric sulfide generator. Difficult studies including the determination of H2S with high spatial and temporal resolution seem to be possible.

U2 - 10.1021/ac960091b

DO - 10.1021/ac960091b

M3 - Journal article

AN - SCOPUS:0030416734

VL - 68

SP - 4351

EP - 4357

JO - Industrial And Engineering Chemistry Analytical Edition

JF - Industrial And Engineering Chemistry Analytical Edition

SN - 0003-2700

IS - 24

ER -

ID: 230563568