Interaction of mercury vapour with thin films of gold

Battistoni, C.; Bemporad, Edoardo; Galdikas, A.; Kačiulis, S.; Mattogno, G.; Mickevičius, S.; Olevano, Valério

doi:10.1016/0169-4332(96)00518-1

Cited by 46 publications

(53 citation statements)

References 8 publications

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“…Some previous studies performed on a macroscopic level [8] show that the collection capacity of a gold surface is limited, and that saturation occurs as a consequence of the completion of the first monolayer of adsorbed mercury. Battistoni et al [9] studied mercury adsorption onto a gold surface using small area X-ray photoelectron spectroscopy (SXPS) and secondary ion mass spectroscopy (SIMS), and they suggested that mercury is absorbed by a thin and quite stable surface sub-layer. Inukai et al [10] observed that mercury adsorption causes the nucleation and growth of a small amalgam island, mainly formed close to step edges.…”

Section: Sensor Modelling-study Of the Effects Of Mercury Adsorption mentioning

confidence: 99%

Model validation of a mercury sensor, based on the resistivity variation of a thin gold film

Raffa

Mazzolai

Mattoli

et al. 2006

Sensors and Actuators B: Chemical

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Section: Sensor Modelling-study Of the Effects Of Mercury Adsorption mentioning

confidence: 99%

Model validation of a mercury sensor, based on the resistivity variation of a thin gold film

Raffa

Mazzolai

Mattoli

et al. 2006

Sensors and Actuators B: Chemical

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“…Assuming that the mercury atoms are stacked side by side on the surface of a at gold lm with no surface morphology, the monolayer of Hg is estimated to be equal to 285 ng/cm 2 [5]. For a low concentration of mercury vapour the diusion reaches only 56 atomic layers of the gold [11].…”

Section: Introductionmentioning

confidence: 99%

SAW Sensor for Mercury Vapour Detection

2012

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Mercury is the element commonly applied in industry. Because of poisoning properties the monitoring of the mercury vapour concentration in the environment is very important. Mercury forms amalgams in connection with gold that causes a change in the electrical resistance and mass of the gold specimens. This eect was applied to measure mercury vapour concentration in the environment using surface acoustic wave technology. Two kinds of surface acoustic wave mercury sensors have been described in the paper. First one utilizes a thin lm of gold deposited between aluminium interdigital transducers and reectors of two-port surface acoustic wave resonator, and the second one golden interdigital transducers and reectors without any sensitive lm between them.

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“…Several GEM sensors monitored the change in the electrical conductivity of a gold film in the presence of mercury vapor (McNicholas et al, 2011;Sarajlic et al, 2013;Ruys et al, 2000;Sabri et al, 2009;Sabri et al, 2011;James et al, 2012;George and Glausinger, 1994), or through the change in the resonant frequency of a piezoelectric quartz crystal containing a gold sensing layer (Battistoni et al, 1996;Levlin et al, 1999;Lumex, 2012). An optical sensor has been assembled based on the change caused by mercury on the absorbance characteristics of a Langmuir-Blodgett film of gold nanoparticles (Krasteva et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Gold thin film chemiresistor sensor for gaseous elemental mercury

Bergantin¹,

Veranga²,

Albano³

et al. 2017

j.appsci

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The presence of gaseous elemental mercury (GEM) in the atmosphere has raised concern because it can cause serious health effects. The largest anthropogenic source of atmospheric mercury in the Philippines is the artisanal small-scale gold mining (ASGM) sector, which accounts for about 30% of the country's annual mercury discharge. There is therefore a need for a portable monitoring system for GEM that can be employed in the ASGM areas. In this study, a gold thin film electrode was used as chemiresistor mercury sensor. Interaction of mercury with the gold thin film produced changes in the resistance of the film that were dependent on the amount of mercury present. These changes can be monitored through the output voltage of the Wheatstone bridge circuit that was incorporated in the sensor. The surface of the thin film can be regenerated through thermal desorption of the adsorbed mercury. It is capable of detecting Hg vapor levels from 0 to 30 ng with good linearity (r = 0.9975) and with a detection limit of 1.77 ng. It yielded repeatable results as demonstrated for 10 ng Hg with rsd value of <10%. A prototype measurement system for gaseous elemental mercury based on this sensor was assembled.

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Interaction of mercury vapour with thin films of gold

Cited by 46 publications

References 8 publications

Model validation of a mercury sensor, based on the resistivity variation of a thin gold film

Model validation of a mercury sensor, based on the resistivity variation of a thin gold film

SAW Sensor for Mercury Vapour Detection

Gold thin film chemiresistor sensor for gaseous elemental mercury

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