Figure 4
From: Polyaniline cryogels: Biocompatibility of novel conducting macroporous material
HPLC chromatogram of impurities detected in extracts of native (solid line) and purified (dotted line) polyaniline cryogels. Residuals of A – ammonium peroxydisulfate, B –hydroquinone, C – p-benzoquinone, D – aniline hydrochloride.
