Determination of HCN sampled from gasification product gases by headspace gas chromatography with atomic emission detector

Mari-Leena Koskinen-Soivi (Corresponding Author), Eero Leppämäki, Pekka Ståhlberg

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

Nitrogen-containing fuels produce hydrogen cyanide when the fuel is gasified. The gas is poisonous and produces nitrogen oxides when it is burned. HCN is usually sampled into alkaline solutions and analysed using an ion selective electrode. The method is tedious and the electrode response is temperature-dependent. Samples are not stable and must be analysed immediately, and they contain ions which are poisonous to the electrode. Therefore a new gas chromatographic method was developed. In this new method HCN is released from the alkaline solutions with sulphuric acid in a headspace sampler and analysed by a gas chromatograph connected to an atomic emission detector. Measurements on carbon emission line 193.1 nm gave the limit of detection 0.05 mg CN/l in the solution. The calibration curve was linear to 1000 mg CN/l and the correlation was 0.997. The relative standard deviation of the calibration was 1.7% at the concentration of 5 mg CN/l and 1.0% at 25 mg CN/l. The developed headspace method allows automated analysis and it needs less sample preparations than the ion selective electrode method. This paper also reports the effect of sample preparation and storage time on the stability of the samples.
Original languageEnglish
Pages (from-to)1625 - 1630
Number of pages6
JournalAnalytical and Bioanalytical Chemistry
Volume381
Issue number8
DOIs
Publication statusPublished - 2005
MoE publication typeA1 Journal article-refereed

Fingerprint

Gasification
Gas chromatography
Gas Chromatography
Ion selective electrodes
Gases
Detectors
Ion-Selective Electrodes
Hydrogen Cyanide
Calibration
Nitrogen Oxides
Electrodes
Nitrogen
Carbon
Ions
Acids
Limit of Detection
Temperature

Keywords

  • headspace gas chromatography
  • AED
  • HCN
  • gasification product gas
  • gasification

Cite this

Koskinen-Soivi, Mari-Leena ; Leppämäki, Eero ; Ståhlberg, Pekka. / Determination of HCN sampled from gasification product gases by headspace gas chromatography with atomic emission detector. In: Analytical and Bioanalytical Chemistry. 2005 ; Vol. 381, No. 8. pp. 1625 - 1630.
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abstract = "Nitrogen-containing fuels produce hydrogen cyanide when the fuel is gasified. The gas is poisonous and produces nitrogen oxides when it is burned. HCN is usually sampled into alkaline solutions and analysed using an ion selective electrode. The method is tedious and the electrode response is temperature-dependent. Samples are not stable and must be analysed immediately, and they contain ions which are poisonous to the electrode. Therefore a new gas chromatographic method was developed. In this new method HCN is released from the alkaline solutions with sulphuric acid in a headspace sampler and analysed by a gas chromatograph connected to an atomic emission detector. Measurements on carbon emission line 193.1 nm gave the limit of detection 0.05 mg CN−/l in the solution. The calibration curve was linear to 1000 mg CN−/l and the correlation was 0.997. The relative standard deviation of the calibration was 1.7{\%} at the concentration of 5 mg CN−/l and 1.0{\%} at 25 mg CN−/l. The developed headspace method allows automated analysis and it needs less sample preparations than the ion selective electrode method. This paper also reports the effect of sample preparation and storage time on the stability of the samples.",
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Determination of HCN sampled from gasification product gases by headspace gas chromatography with atomic emission detector. / Koskinen-Soivi, Mari-Leena (Corresponding Author); Leppämäki, Eero; Ståhlberg, Pekka.

In: Analytical and Bioanalytical Chemistry, Vol. 381, No. 8, 2005, p. 1625 - 1630.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Determination of HCN sampled from gasification product gases by headspace gas chromatography with atomic emission detector

AU - Koskinen-Soivi, Mari-Leena

AU - Leppämäki, Eero

AU - Ståhlberg, Pekka

PY - 2005

Y1 - 2005

N2 - Nitrogen-containing fuels produce hydrogen cyanide when the fuel is gasified. The gas is poisonous and produces nitrogen oxides when it is burned. HCN is usually sampled into alkaline solutions and analysed using an ion selective electrode. The method is tedious and the electrode response is temperature-dependent. Samples are not stable and must be analysed immediately, and they contain ions which are poisonous to the electrode. Therefore a new gas chromatographic method was developed. In this new method HCN is released from the alkaline solutions with sulphuric acid in a headspace sampler and analysed by a gas chromatograph connected to an atomic emission detector. Measurements on carbon emission line 193.1 nm gave the limit of detection 0.05 mg CN−/l in the solution. The calibration curve was linear to 1000 mg CN−/l and the correlation was 0.997. The relative standard deviation of the calibration was 1.7% at the concentration of 5 mg CN−/l and 1.0% at 25 mg CN−/l. The developed headspace method allows automated analysis and it needs less sample preparations than the ion selective electrode method. This paper also reports the effect of sample preparation and storage time on the stability of the samples.

AB - Nitrogen-containing fuels produce hydrogen cyanide when the fuel is gasified. The gas is poisonous and produces nitrogen oxides when it is burned. HCN is usually sampled into alkaline solutions and analysed using an ion selective electrode. The method is tedious and the electrode response is temperature-dependent. Samples are not stable and must be analysed immediately, and they contain ions which are poisonous to the electrode. Therefore a new gas chromatographic method was developed. In this new method HCN is released from the alkaline solutions with sulphuric acid in a headspace sampler and analysed by a gas chromatograph connected to an atomic emission detector. Measurements on carbon emission line 193.1 nm gave the limit of detection 0.05 mg CN−/l in the solution. The calibration curve was linear to 1000 mg CN−/l and the correlation was 0.997. The relative standard deviation of the calibration was 1.7% at the concentration of 5 mg CN−/l and 1.0% at 25 mg CN−/l. The developed headspace method allows automated analysis and it needs less sample preparations than the ion selective electrode method. This paper also reports the effect of sample preparation and storage time on the stability of the samples.

KW - headspace gas chromatography

KW - AED

KW - HCN

KW - gasification product gas

KW - gasification

U2 - 10.1007/s00216-005-3129-0

DO - 10.1007/s00216-005-3129-0

M3 - Article

VL - 381

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JO - Analytical and Bioanalytical Chemistry

JF - Analytical and Bioanalytical Chemistry

SN - 1618-2642

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