Why does PBS treated with o-phthaldialdehyde exhibit absorbance at 332 nm when it is only a blank with no amine groups?

Hi all, I study the release of gentamicin from bone cement pellets immersed in PBS. So I have been using plain 1x phosphate buffered saline as a blank and I treat it the same way I treat my...

13 July 2016 8,748 3 View