A sensor system for high resolution in situ atmospheric corrosivity monitoring in field environments
- Royal Inst. of Tech., Stockholm (Sweden)
- Stora Billerud AB, Skoghall (Sweden). Div. Skoghall
In order to investigate episodic changes in atmospheric corrosivity with a high time resolution, a new sensor system for in situ field studies have been developed. Atmospheric corrosivity probes, based on the quartz crystal microbalance technique, are used together with probes for temperature and relative humidity and analyzers for H{sub 2}S, SO{sub 2}, NO{sub 2}, and O{sub 3}. To demonstrate the capability of the sensor system, an indoor field characterization has been conducted in an electrical control room within a pulp and paper factory. The characterization included simultaneous exposures of gold, silver, and copper together with gas analysis during normal operation and simulated malfunctions of the air filtration system. The precision of in situ mass response measurements has a standard deviation of only {+-} 1 ng/cm{sup 2}, corresponding to a mass sensitivity of less than one equivalent monolayer of corrosion products, e.g., Cu{sub 2}O. The mass sensitivity enabled differences in mass increase rates of copper, silver, and gold to be detected within hours after exposure start in normal operating conditions and on silver within minutes after simulated malfunctions of the air filtration system.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 536457
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 8 Vol. 144; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
A quartz crystal microbalance probe developed for outdoor in situ atmospheric corrosivity monitoring
Simultaneous infrared reflection absorption spectroscopy and quartz crystal microbalance measurements for in situ studies of the metal/atmosphere interface
Related Subjects
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
54 ENVIRONMENTAL SCIENCES
AIR FILTERS
COPPER
CORROSION
CORROSION PRODUCTS
CORROSIVE EFFECTS
FAILURES
GOLD
HYDROGEN SULFIDES
INDOOR AIR POLLUTION
MEASURING INSTRUMENTS
NITROGEN DIOXIDE
OZONE
SILVER
SULFUR DIOXIDE
VENTILATION SYSTEMS