منابع مشابه
Novel Thallium(I)-Selective Membrane Electrode Based on a Podal Ligand
A PVC-based membrane electrode for thallium(I) ions based on 1,21,23,25-tetramethyl-2,20: 3,19-dimetheno[H, 2] H, 23H, 25H-bis-[1,3] dioxocino[5,4-i:5',4'-i] benzo [1,2-d: 5.4-d'] bis [1,3] benzodioxocin(II) has been prepared. The electrode displays a linear dynamic range of 1.0 × 10−1-1.0 × 10−5 M, with a Nernstian slope of 59.8 ± 0.2 mV decad−1, and a detection limit 5.0 × 10−6 M. It has a ve...
متن کاملPotentiometric determination of silver(I) by selective membrane electrode based on derivative of porphyrin.
The performance of silver metal complexes with meso-tetraphenylporphyrin ([H2T(4-CH3)]PP) as ionophores for ion-selective electrodes was studied. The electrode exhibited linear response with Nernstian slope of 59.2 +/- 1.0 mV per decade within the concentration range of 1.0 x 10(-7)-1.0 x 10(-1) M silver ions. The limit of detection as determined from the intersection of the extrapolated linear...
متن کاملGraphene as a subnanometre trans-electrode membrane
Isolated, atomically thin conducting membranes of graphite, called graphene, have recently been the subject of intense research with the hope that practical applications in fields ranging from electronics to energy science will emerge1. Here, we show that when immersed in ionic solution, a layer of graphene becomes a new electrochemical structure we call a trans-electrode. The transelectrode's ...
متن کاملA New Liquid Membrane Electrode for Selective Determination of Caffeine
A new liquid membrane electrode for caffeine prepared from a solution of caffeine-picrylsulfonate ion-pair complex in n-octanol is developed. It exhibits Nernstian response in the range of w-·2 to 10M caffeine with a cationic slope of 59 mY/concentration decade. The electrode has a wide working pH range (5.59.5), fast response time (20 seconds1.5 minutes), stable response for at least 30 days a...
متن کاملEquilibrium Potentials of Membrane Electrodes ( glass electrode / pH ) JUI
A simple thermodynamic theory of the equilibrium potentials of membrane electrodes is formulated and applied to the glass electrode for measurement of pH. The new formulation assumes the selective adsorption or binding of specific ions on the surface of the membrane which may or may not be permeable to the ion, and includes the conventional derivation based on reversible ion transport across me...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1950
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.71.82