• Bulletin of the Korean Chemical Society
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• 제26권6호
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• pp.882-886
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• 2005

Copper(II) ion-selective PVC membrane electrode based on 2-mercaptobenzoxazole as a new ionophore and o-nitrophenyl octyl ether (o-NPOE) as plasticizer is proposed. This electrode revealed good selectivity for $Cu^{2+}$ over a wide variety of other metal ions. Effects of experimental parameters such as membrane composition, nature and amount of plasticizer, and concentration of internal solution on the potential response of $Cu^{2+}$ sensor were investigated. The electrode exhibits good response for $Cu^{2+}$ in a wide linear range of 5.0 ${\times}$ 10−.6-1.6 ${\times}$ $10^{-2}$ mol/L with a slope of 29.2 ${\pm}$ 2.0 mV/decade. The response time of the sensor is less than 10 s, and the detection limit is 2.0 ${\times}$ $10^{-6}$ mol/L. The electrode response was stable in pH range of 4-6. The lifetime of the electrode was about 2 months. The electrode revealed comparatively good selectivities with respect to many alkali, alkaline earth, and transition metal ions.

• 농약과학회지
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• 제10권1호
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• pp.66-68
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• 2006

2-아미노페놀(aminophenol) 유도체와 1,2-페닐렌디아민(phenylenediamine) 유도체를 이황화탄소대신 유황(S), 디클로로메탄과, 알칼리금속의 무기염기 및 촉매를 사용하여 알콜용매에서 반응시켜서 고수율 고순도로 2-머캅토벤족사졸 및 벤즈이미다졸 유도체를 합성하였다.