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- W4253667079 abstract "The characteristics, performance, and application of an electrode, namely, Pt|Hg|Hg2(PABzt)2| graphite, where PABzt stands for p-aminobenzoate ion, are described. This electrode responds to PABzt with sensivity of (58.1±1.0) mV per decade over the range 1.0×10−4 to 1.0×10−1 mol l−1 at pH 6.5–8.0 and a detection limit of 3.2×10−5 mol l−1. The electrode shows easy construction, fast response time (within 10–30 s), low-cost, and excellent response stability (lifetime greater than 6 months, in continuous use). The proposed sensor displayed good selectivity for p-aminobenzoate in the presence of several substances, especially, concerning carboxylate and inorganic anions. It was used to determine p-aminobenzoate in pharmaceutical formulations by means of the standard additions method. The results obtained by using this electrode compared very favorably with those given by an HPLC procedure." @default.
- W4253667079 created "2022-05-12" @default.
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- W4253667079 date "2004-07-01" @default.
- W4253667079 modified "2023-09-30" @default.
- W4253667079 title "p-Aminobenzoate ion determination in pharmaceutical formulations by using a potentiometric sensor immobilized in a graphite matrix" @default.
- W4253667079 doi "https://doi.org/10.1016/s0039-9140(03)00795-1" @default.
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