Mercury adsorption on gold surfaces employed in the sampling and determination of vaporous mercury: A scanning tunneling microscopy study

Markus Levlin, H. Niemi, Pekka Hautojärvi, Ermo Ikävalko, Timo Laitinen

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Abstract

To clarify the mechanism of mercury adsorption on gold surfaces thin epitaxial gold films have been exposed to trace amounts of gaseous mercury under laboratory conditions for different periods of time. The changes in the surface morphology of the thin films caused by the exposure have been studied by scanning tunneling microscopy (STM). The evolution of the surface structures with time has been also investigated, in the course of a few days after the exposure. The adsorption of mercury on the gold surfaces has caused drastic changes in the morphology of the surfaces. Pits and islands of 2 to 30 nm in diameter have appeared on the surface, their size and density per unit area depending on the amount of exposure to mercury. The formation of pits and islands followed a certain path of events.
Original languageEnglish
Pages (from-to)2-9
Number of pages8
JournalFresenius' Journal of Analytical Chemistry
Volume355
Issue number1
DOIs
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

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Scanning Tunnelling Microscopy
Scanning tunneling microscopy
Mercury
Gold
Adsorption
Sampling
Islands
Surface structure
Surface morphology
Thin films

Cite this

Levlin, Markus ; Niemi, H. ; Hautojärvi, Pekka ; Ikävalko, Ermo ; Laitinen, Timo. / Mercury adsorption on gold surfaces employed in the sampling and determination of vaporous mercury : A scanning tunneling microscopy study. In: Fresenius' Journal of Analytical Chemistry. 1996 ; Vol. 355, No. 1. pp. 2-9.
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Mercury adsorption on gold surfaces employed in the sampling and determination of vaporous mercury : A scanning tunneling microscopy study. / Levlin, Markus; Niemi, H.; Hautojärvi, Pekka; Ikävalko, Ermo; Laitinen, Timo.

In: Fresenius' Journal of Analytical Chemistry, Vol. 355, No. 1, 1996, p. 2-9.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Mercury adsorption on gold surfaces employed in the sampling and determination of vaporous mercury

T2 - A scanning tunneling microscopy study

AU - Levlin, Markus

AU - Niemi, H.

AU - Hautojärvi, Pekka

AU - Ikävalko, Ermo

AU - Laitinen, Timo

PY - 1996

Y1 - 1996

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AB - To clarify the mechanism of mercury adsorption on gold surfaces thin epitaxial gold films have been exposed to trace amounts of gaseous mercury under laboratory conditions for different periods of time. The changes in the surface morphology of the thin films caused by the exposure have been studied by scanning tunneling microscopy (STM). The evolution of the surface structures with time has been also investigated, in the course of a few days after the exposure. The adsorption of mercury on the gold surfaces has caused drastic changes in the morphology of the surfaces. Pits and islands of 2 to 30 nm in diameter have appeared on the surface, their size and density per unit area depending on the amount of exposure to mercury. The formation of pits and islands followed a certain path of events.

U2 - 10.1007/s0021663550002

DO - 10.1007/s0021663550002

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