Formalydehyde inAir byHPLCUV
The SRI Model 210DHPLC system can detect formaldehyde and acetaldehyde in air samples down to
1ppm. The210Dusesamercury lampwith twostrong linesof emission: 254nmand360nm. EPAmethod
8315 recommendsusing the360nmwavelength for formaldehyde inair,butasshown in thechromatograms
below, the254nmwavelengthon the210DUVdetector respondsmore sensitively than the360nm.
254nm
360nm
1ppm
1ppm
10ppm
10ppm
These two chromatograms were run on the
254nm UV detector wavelength. The
formaldehydeareacount for the10ppmsample
is 974.792, and89.253 for the1ppm sample.
These two chromatogramswere runon the
360nmUVdetectorwavelength,usinga filter
(EdmundScientificpart#46416) toselectout
the 254nm response. The formaldehyde
area count for the 10ppm sample is
604.1544,and65.8818 for the1ppmsample.
SRI Instruments
310-214-5092
