Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
750889 | Sensors and Actuators B: Chemical | 2014 | 4 Pages |
Abstract
A precise method for the measurement of diffuse reflectance by using gas absorption spectroscopy technique with an integrating sphere is demonstrated. A quantitative relationship between the diffuse reflectance and the gas absorption spectrum is formulated, which has been further validated by experiments. The precision of the reflectivity measurement depends on the diameter and port fraction of the integrating sphere as well as gas concentration, and it increases linearly with the magnitude of the reflectivity. A high precision of 0.005% was achieved at the reflectivity of 0.98844(5).
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Qiang Gao, Jia Yu, Yungang Zhang, Zhiguo Zhang, Wenwu Cao,