Abstract
In this work, a novel approach for the detection of mercury vapor in air is presented using differential heat dissipation measurements. Therefore, the temperature difference between an amalgamated and a non-exposed gold film is recorded, while heating both films with identical electrical power. As the amalgam layer lowers the heat dissipation, the amalgamated gold film reaches higher temperatures compared to the non-exposed gold film. Preliminary experiments show a clear dependence of the measured temperature difference on the mercury vapor concentration and the exposition time. Thus, a detection of mercury vapor is generally possible using differential heat dissipation measurements.
Highlights
IntroductionIt is known to affect the lung, kidney, central and peripheral nervous system
Further investigations concentrate on lowering the detection limit
We presented a novel approach for the detection of mercury vapor in air using differential heat dissipation measurements
Summary
It is known to affect the lung, kidney, central and peripheral nervous system. According to the World Health Organization [1], the annual average threshold exposure limit is 1 μg/m3. In order to reduce the amount of mercury emitted into the atmosphere, there is a strong need for the development of continuous mercury detection systems which are highly sensitive, portable and durable. The aim of this work is to investigate a novel approach for the detection of mercury vapor in air. Similar to sensors known from literature [2], the approach is based on the amalgamation of gold
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