Fig. 10From: Determination of antihistaminic drugs alcaftadine and olopatadine hydrochloride via ion-pairing with eosin Y as a spectrofluorimetric and spectrophotometric probe: application to dosage formsContinuous variation plot for the ion association of ALC or OLO with eosin Y. (the concentration used is 1.3 × 10–3 M of each)Back to article page