Compact, open and general purpose cell of variable effective pathlength: direct absorption measurement of SO(4)(2-) in water.
The use of an optothermal window (OW) was proposed for the direct (no need for sample preparation) spectroscopic, non-destructive measurement of SO(4)(2-) in water at 1078 cm(-1). The presently determined limit of detection (LOD) of 1 mmol/L is comparable to that provided by CO(2) laser photoacoustic spectroscopy, but about one order of magnitude superior to that obtainable by the ATR method.
Favier
J P
JP
Laser Photoacoustic Laboratory, Department of Agricultural Engineering and Physics, Wageningen Agricultural University, Bomenweg 4, NL-6703 HD, Wageningen, The Netherlands, Jan.PaulFavier@user.aenf.wau.nl
Bicanic
D
D
Chirtoc
M
M
Helander
P
P