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Calibration Transfer Among Sensor Arrays Designed for Monitoring Volatile Organic Compounds in Indoor Air Quality

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4 Author(s)
Wolfrum, E.J. ; Nat. Renewable Energy Lab., Golden, CO ; Meglen, R.M. ; Peterson, D. ; Sluiter, J.

Sensor arrays were constructed using commercially available heated tin oxide sensors (Figaro TGS2602) and exposed to a wide variety of volatile organic compounds (VOCs) in air streams at concentration levels in the range of 0.01-0.30 ppm, which is a range typical of indoor air quality studies. Partial least squares calibration models were developed using steady-state sensor array responses. These calibration models were used to detect, differentiate, and quantify different VOCs. The authors were able to successfully transfer single-component calibrations by sorting the sensors in each array by sensitivity prior to transfer. Future work will explore multicomponent calibration transfer

Published in:

Sensors Journal, IEEE  (Volume:6 ,  Issue: 6 )