Temperature stability of mercury compounds in solid substrates

• Autorzy: Matej Sedlar , Majda Pavlin , Arkadij Popovič , Milena Horvat
• Języki publikacji: EN

Abstrakty

EN

The major aim of the newly adopted Mercury Convention is to reduce global mercury (Hg) emissions to the environment. In high temperature industrial processes, including coal combustion, Hg compounds present as impurities in solid materials are decomposed and evaporated leading to the emission of Hg to the atmosphere. The behaviour of different Hg compounds and their mixtures during heating have been the subject of numerous studies, and is the topic of the present work. Controlled heating can be used to fractionate Hg compounds in solid substrates, offering the possibility of identification and quantification of Hg compounds. In the attempt to develop a method for temperature fractionation of Hg, experiments were conducted with pure Hg compounds, and the compounds mixed with different substrates (SiO2 and CaSO4 • 2H2O), for calibration purposes. Detection was performed by two methods, namely Cold Vapour Atomic Absorption Spectrometry (CV AAS) with Zeeman background correction, and Nier-type Mass Spectrometry with a Knudsen cell (MS). Further investigation is in process.

EN

Słowa kluczowe

EN

mercury compounds; temperature fractionation; substrate; CV AAS; mass spectrometry

• Czasopismo: Open Chemistry
• Rocznik: 2015
• Tom: 13
• Numer: 1

Daty

otrzymano

2014-02-10

zaakceptowano

2014-08-28

online

2014-11-26

Twórcy

autor

Matej Sedlar

• Esotech, d.d., Preloška 1, 3320 Velenje, Slovenia

autor

Majda Pavlin

• International Postgraduate School Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia; Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia

autor

Arkadij Popovič

• Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia

autor

Milena Horvat

• International Postgraduate School Jožef Stefan, Jamova 39, 1000 Ljubljana, Slovenia; Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia

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Identyfikatory

DOI

10.1515/chem-2015-0051