(658f) Determination of Bisphenols Using Ultraviolet Spectroscopy
AIChE Annual Meeting
2011
2011 Annual Meeting
Water Technology for Developed and Developing Countries (see also Separations Division)
Micropollutants, Disinfection, and Other Considerations in Water Treatment
Thursday, October 20, 2011 - 10:35am to 11:00am
Bisphenols
have a strong, unique, absorption at 277nm in the ultraviolet region of the
spectrum. This absorption can be used to both identify and quantify the Bisphenol in aqueous solutions. Standard curves over the
range from 0.2 to 20 ppm of Bisphenol
A in water and
alcohol have r2 values in the range of r2 = 0.998 ?
0.999. BPA extracted from various sources has been successfully detected.
Filtering samples through Nylon and Cellulose Acetate (CA) syringe filters lead
to large decreases in BPA in the filtrate, in some cases to levels not
detectable using UV spectroscopy. Other filter materials cause less loss of Bisphenols. Similar results have been obtained with other
representative Bisphenols. Concentration of dilute
samples allows detection of Bisphenols by ultraviolet
spectroscopy. GC-MS confirms the ultraviolet data.