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A new type of di benzoyl tartaric acid selective electr ode has been developed. Three double| arm calixarene derivatives were emp loyed as the neutral ionophores. The poly(vinyl chloride) membrane electrode containing an amide derivative of ca lixarene as the neutral carrier an d a dibutyl phthalate as the plastici zer exhibited the highest sensitivity for dibenzoyl tartaric acid. The slop e of linear portion was 27.8 mV per c oncertration decade. The electrode has a fast response and a long lifetime .
A new type of di-benzoyl tartaric acid selective electrodeoxy has been developed. Three double | cal cal alielle derivatives were emp loyed as the neutral ionophores. The poly (vinyl chloride) membrane electrode containing an amide derivative of ca lixarene as the neutral carrier an da dibutyl phthalate as the plastici zer exhibited the highest sensitivity for dibenzoyl tartaric acid. The slop e of linear portion was 27.8 mV per c oncertration decade. The electrode has a fast response and a long lifetime.