Applicability of microwave induced plasma optical emission spectrometry (MIP-OES) for continous monitoring of mercury in flue gases

Volker Siemens, Tiina Harju, Timo Laitinen, Kari Larjava, Jose Broekaert

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Abstract

The applicability of microwave-induced plasma optical emission spectrometry (MIP-OES) for continuous monitoring of the environmentally hazardous element mercury in flue gases has been studied. Microwave induced plasmas have been sustained using both a TM010 cavity (Beenakker resonator) and a so-called Surfatron. The analytical figures of merit for mercury in argon and helium discharges with both types of low-power micro-wave discharges have been examined. To determine mercury in artificial stack gases non-mixed argon/nitrogen discharges have been tested using a tangential flow torch design which allows to introduce a metal-loaded nitrogen gas flow as external gas and argon as internal gas. The addition of main flue gas components such as water vapour (concentration <6 g/m3), oxygen (<4% v/v) and carbon dioxide (<15% v/v) decrease the mercury line intensities to a considerable extent. Trace gases (CO, HCl, SO2, NO) in concentrations typical to waste incineration processes have been found to have no effect on the mercury and the argon line intensities. The detection limit of mercury in nitrogen is 8 μg/m3 using the TM010 MIP and 10 μg/m3 using the Surfatron. As such low detection limits are below the emission limit values of present-day environmental legislation MIP-OES is useful for on-line monitoring of mercury.
Original languageEnglish
Pages (from-to)11-18
JournalFresenius' Journal of Analytical Chemistry
Volume351
Issue number1
DOIs
Publication statusPublished - 1995
MoE publication typeA1 Journal article-refereed

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Microwaves
Mercury
Flue gases
Spectrometry
Spectrum Analysis
Gases
Plasmas
Argon
Monitoring
Nitrogen
Limit of Detection
Incineration
Helium
Cavity resonators
Waste incineration
Steam
Carbon Monoxide
Legislation
Carbon Dioxide
Flow of gases

Cite this

Siemens, Volker ; Harju, Tiina ; Laitinen, Timo ; Larjava, Kari ; Broekaert, Jose. / Applicability of microwave induced plasma optical emission spectrometry (MIP-OES) for continous monitoring of mercury in flue gases. In: Fresenius' Journal of Analytical Chemistry. 1995 ; Vol. 351, No. 1. pp. 11-18.
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abstract = "The applicability of microwave-induced plasma optical emission spectrometry (MIP-OES) for continuous monitoring of the environmentally hazardous element mercury in flue gases has been studied. Microwave induced plasmas have been sustained using both a TM010 cavity (Beenakker resonator) and a so-called Surfatron. The analytical figures of merit for mercury in argon and helium discharges with both types of low-power micro-wave discharges have been examined. To determine mercury in artificial stack gases non-mixed argon/nitrogen discharges have been tested using a tangential flow torch design which allows to introduce a metal-loaded nitrogen gas flow as external gas and argon as internal gas. The addition of main flue gas components such as water vapour (concentration <6 g/m3), oxygen (<4{\%} v/v) and carbon dioxide (<15{\%} v/v) decrease the mercury line intensities to a considerable extent. Trace gases (CO, HCl, SO2, NO) in concentrations typical to waste incineration processes have been found to have no effect on the mercury and the argon line intensities. The detection limit of mercury in nitrogen is 8 μg/m3 using the TM010 MIP and 10 μg/m3 using the Surfatron. As such low detection limits are below the emission limit values of present-day environmental legislation MIP-OES is useful for on-line monitoring of mercury.",
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Applicability of microwave induced plasma optical emission spectrometry (MIP-OES) for continous monitoring of mercury in flue gases. / Siemens, Volker; Harju, Tiina; Laitinen, Timo; Larjava, Kari; Broekaert, Jose.

In: Fresenius' Journal of Analytical Chemistry, Vol. 351, No. 1, 1995, p. 11-18.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Applicability of microwave induced plasma optical emission spectrometry (MIP-OES) for continous monitoring of mercury in flue gases

AU - Siemens, Volker

AU - Harju, Tiina

AU - Laitinen, Timo

AU - Larjava, Kari

AU - Broekaert, Jose

N1 - Project code: K5SU00043

PY - 1995

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N2 - The applicability of microwave-induced plasma optical emission spectrometry (MIP-OES) for continuous monitoring of the environmentally hazardous element mercury in flue gases has been studied. Microwave induced plasmas have been sustained using both a TM010 cavity (Beenakker resonator) and a so-called Surfatron. The analytical figures of merit for mercury in argon and helium discharges with both types of low-power micro-wave discharges have been examined. To determine mercury in artificial stack gases non-mixed argon/nitrogen discharges have been tested using a tangential flow torch design which allows to introduce a metal-loaded nitrogen gas flow as external gas and argon as internal gas. The addition of main flue gas components such as water vapour (concentration <6 g/m3), oxygen (<4% v/v) and carbon dioxide (<15% v/v) decrease the mercury line intensities to a considerable extent. Trace gases (CO, HCl, SO2, NO) in concentrations typical to waste incineration processes have been found to have no effect on the mercury and the argon line intensities. The detection limit of mercury in nitrogen is 8 μg/m3 using the TM010 MIP and 10 μg/m3 using the Surfatron. As such low detection limits are below the emission limit values of present-day environmental legislation MIP-OES is useful for on-line monitoring of mercury.

AB - The applicability of microwave-induced plasma optical emission spectrometry (MIP-OES) for continuous monitoring of the environmentally hazardous element mercury in flue gases has been studied. Microwave induced plasmas have been sustained using both a TM010 cavity (Beenakker resonator) and a so-called Surfatron. The analytical figures of merit for mercury in argon and helium discharges with both types of low-power micro-wave discharges have been examined. To determine mercury in artificial stack gases non-mixed argon/nitrogen discharges have been tested using a tangential flow torch design which allows to introduce a metal-loaded nitrogen gas flow as external gas and argon as internal gas. The addition of main flue gas components such as water vapour (concentration <6 g/m3), oxygen (<4% v/v) and carbon dioxide (<15% v/v) decrease the mercury line intensities to a considerable extent. Trace gases (CO, HCl, SO2, NO) in concentrations typical to waste incineration processes have been found to have no effect on the mercury and the argon line intensities. The detection limit of mercury in nitrogen is 8 μg/m3 using the TM010 MIP and 10 μg/m3 using the Surfatron. As such low detection limits are below the emission limit values of present-day environmental legislation MIP-OES is useful for on-line monitoring of mercury.

U2 - 10.1007/BF00324286

DO - 10.1007/BF00324286

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JO - Analytical and Bioanalytical Chemistry

JF - Analytical and Bioanalytical Chemistry

SN - 1618-2642

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