Determination of NH3 in pyrolysis gases by ammonia selective electrode

Jouni Hämäläinen, Jouni Tummavuori, Martti Aho

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

The suitability of ion-selective electrode for the determination of ammonia in pyrolysis gases of fossil fuels was studied. The ammonia was absorbed into acidic solution and two kinds of determination methods were carried out. The ammonia was either measured directly from the acid solution, or ammonia was first released into the gas phase and then determined (air gap method) by the ammonia selective electrode. The electrode functioned well in both cases, but the linear calibration range was rather narrow, slightly more than one tenfold. The quantitative detection limit in the water phase was 5 × 10−6M (0.085 ppm) NH3 and in gas phase operation solutions above 5 × 10−4M (8.5 ppm) NH3 it was possible to measure quantitatively. The applications were carried out with Finnish energy peat samples and a coal sample.

Original languageEnglish
Pages (from-to)1575 - 1581
Number of pages7
JournalTalanta
Volume40
Issue number10
DOIs
Publication statusPublished - 1993
MoE publication typeA1 Journal article-refereed

Fingerprint

Ammonia
Electrodes
Pyrolysis
Gases
Fossil Fuels
Ion-Selective Electrodes
Peat
Coal
Fossil fuels
Calibration
Limit of Detection
Soil
Air
Acids
Water

Keywords

  • ammonia
  • determination
  • pyrolysis products
  • gases
  • ion-selective electrodes

Cite this

Hämäläinen, Jouni ; Tummavuori, Jouni ; Aho, Martti. / Determination of NH3 in pyrolysis gases by ammonia selective electrode. In: Talanta. 1993 ; Vol. 40, No. 10. pp. 1575 - 1581.
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Determination of NH3 in pyrolysis gases by ammonia selective electrode. / Hämäläinen, Jouni; Tummavuori, Jouni; Aho, Martti.

In: Talanta, Vol. 40, No. 10, 1993, p. 1575 - 1581.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Determination of NH3 in pyrolysis gases by ammonia selective electrode

AU - Hämäläinen, Jouni

AU - Tummavuori, Jouni

AU - Aho, Martti

N1 - Project code: PLT3013

PY - 1993

Y1 - 1993

N2 - The suitability of ion-selective electrode for the determination of ammonia in pyrolysis gases of fossil fuels was studied. The ammonia was absorbed into acidic solution and two kinds of determination methods were carried out. The ammonia was either measured directly from the acid solution, or ammonia was first released into the gas phase and then determined (air gap method) by the ammonia selective electrode. The electrode functioned well in both cases, but the linear calibration range was rather narrow, slightly more than one tenfold. The quantitative detection limit in the water phase was 5 × 10−6M (0.085 ppm) NH3 and in gas phase operation solutions above 5 × 10−4M (8.5 ppm) NH3 it was possible to measure quantitatively. The applications were carried out with Finnish energy peat samples and a coal sample.

AB - The suitability of ion-selective electrode for the determination of ammonia in pyrolysis gases of fossil fuels was studied. The ammonia was absorbed into acidic solution and two kinds of determination methods were carried out. The ammonia was either measured directly from the acid solution, or ammonia was first released into the gas phase and then determined (air gap method) by the ammonia selective electrode. The electrode functioned well in both cases, but the linear calibration range was rather narrow, slightly more than one tenfold. The quantitative detection limit in the water phase was 5 × 10−6M (0.085 ppm) NH3 and in gas phase operation solutions above 5 × 10−4M (8.5 ppm) NH3 it was possible to measure quantitatively. The applications were carried out with Finnish energy peat samples and a coal sample.

KW - ammonia

KW - determination

KW - pyrolysis products

KW - gases

KW - ion-selective electrodes

U2 - 10.1016/0039-9140(93)80371-W

DO - 10.1016/0039-9140(93)80371-W

M3 - Article

VL - 40

SP - 1575

EP - 1581

JO - Talanta

JF - Talanta

SN - 0039-9140

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ER -