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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 27, Number 2
JKCSEZ 27(2)
April 20, 1983 

A Study on the Tungstate-Sensing Electrodes

Tungstate Ion 감응 전극에 관한 연구
Gwon-shik Ihn, Jung-hwa Lee, Richard P. Buck

인권식, 이중화, R. P. Buck
Tungstate 이온 감응에 대하여 세가지 성분인 Ag2S-PbS-PbWO4로된 전극이 제조되어 평가 되었다. 성분비(w/w%)가 51.71 : 16.64 : 31.65인 전극이 전위차 감응, 안정도, 감응속도, 감응속도, 재현성이 우수 하였다. 0.1F-NH4Ac-NH4OH 완충용액 속에서 일정한 이온강도와 pH 8.00로 조정된 10-1~10-4M WO42- 농도범위에서 실험하였고 감응성은 phosphate 감응 전극과 비슷하였다. 많은 이온들이 방해를 하였다.

Three component Ag2S-PbS-PbWO4 electrodes have been prepared and evaluated for sensitivity to tungstate. The 51.71 : 16.64 : 31.65(w/w%) composition is superior in terms of potentiometric response, stability, rapidity of response and reproducibility. Testing was done over the concentration range 10-1~10-4M WO42- in 0.1F-NH4Ac-NH4OH buffer at pH 8.00 with constant ionic strength. The quality of response is similar to that of corresponding phosphate-sensing electrode. Many common ions interfere.

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