Differential optical absorption spectroscopy system used for atmospheric mercury monitoring.
A high-resolution differential optical absorption spectroscopy (DOAS) system for long-path atmospheric pollution monitoring is described. The system, consisting of a broadband lamp and a dispersive, fast-scanning optical receiver, separated by a few kilometers, was used in measurements of different pollutants, highlighted by the monitoring of the local concentration of atomic mercury. Mercury levels in the ppt (1:10(12)) range were assessed by comparisons with laboratory measurements.
Edner
H
H
Lund Institute of Technology, Physics Department, P.O. Box 118, S-221 00 Lund, Sweden.
Sunesson
A
A
Svanberg
S
S
Unéus
L
L
Wallin
S
S