Abstract:Abstract:The main aim of this work is to improve the lower detection limit of cadmium selective polymeric membrane. The sensor was fabricated by using thiacalixarene derivative 5,11,17,23-tetratert-butyl-25,27-bis-[(3′-methoxy phenyl)methoxy]-26, 28-dihydroxy-2,8,14,20-tetrathiacalix [4]arene as ionophore. The membrane with composition of ionophore: PVC: DMP: NaTPB of 3.5% : 33% : 1.0% : 62.5% (w/v) has a standard detection limit of 1.0x10 -8 M and lowest possible detection limit of 6.2x10 -9 M. The electrode … Show more
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