Determination of NH3 in pyrolysis gases by ammonia selective electrode

Jouni Hämäläinen; Jouni Tummavuori; Martti Aho

doi:10.1016/0039-9140(93)80371-W

Determination of NH₃ in pyrolysis gases by ammonia selective electrode

Jouni Hämäläinen, Jouni Tummavuori, Martti Aho

University of Jyväskylä

Research output: Contribution to journal › Article › Scientific › peer-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 language	English
Pages (from-to)	1575 - 1581
Number of pages	7
Journal	Talanta
Volume	40
Issue number	10
DOIs	https://doi.org/10.1016/0039-9140(93)80371-W
Publication status	Published - 1993
MoE publication type	A1 Journal article-refereed

Keywords

ammonia
determination
pyrolysis products
gases
ion-selective electrodes

Access to Document

10.1016/0039-9140(93)80371-W

Cite this

@article{1324380952a245b7976e47ee84cd429c,

title = "Determination of NH3 in pyrolysis gases by ammonia selective electrode",

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.",

keywords = "ammonia, determination, pyrolysis products, gases, ion-selective electrodes",

author = "Jouni H{\"a}m{\"a}l{\"a}inen and Jouni Tummavuori and Martti Aho",

note = "Project code: PLT3013",

year = "1993",

doi = "10.1016/0039-9140(93)80371-W",

language = "English",

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pages = "1575 -- 1581",

journal = "Talanta",

issn = "0039-9140",

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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

SN - 0039-9140

VL - 40

SP - 1575

EP - 1581

JO - Talanta

JF - Talanta

IS - 10