Studies on the development of Ion-Selective Electrode to dye and dichromate species

Abstract

본 연구에서는 식용 색소 및 Cr??O??에 선택적인 전극 개발을 시도하였다. 9가지의 감응물질을 제조하였으며 그 중에서 3가지만 선정하여 PVC막 제조에 사용하였다. 또한 음 및 양이온 교환수지에 산성 염료분자나 혹은 금속 양이온(Cu??, Fe??)을 교환시킨 것을 200mesh로 분쇄하여 감응물질(sensor)로 사용한 PVC전극등도 제작하였으며, 폴리우레탄막으로 만든 전극 및 liquid state 전극등도 제작하여 염료 용액에 대한 반응성을 시험하였다.

가장 성공적인 전극은 Crystal-violet-dichromate를 sensor로 사용한 것으로서 Cr?O? 용액에 대하여는 10??M-10??M범위에서 이론치에 가까운 27-30mV/decade의 반응성을 보였다. 여거가지 전극들을 Sunset yellow, Tartrazine, Green S 및 Amaranth와 같은 식용 색소에 대하여 반응성을 시험하여 보았으나, 일반적으로 이론값보다 월등 낮은 nernstian slope factor를 보였다.

An attempt has been made for the development of ion selective electrode to a dye species.

The PVC electrodes using Crystal violet-dichromate, Bismark brown-Indigo carmine and Bismark brown-Sunset yellow among nine kinds of sensing materials prepared here have been tested for their function to certain dye solution.

Anion or cation enchange resin substituted the site by an acid dye molecule or metal ion such as Cu??, Fe?? was pulverized into the size of 200 mesh and also used for the preparation of the PVC membrane electrode for testing their responsibility to a dye solution.

Polyurethane membrane and liquid state electrodes were also prepared and tested their function to dye species along with the PVC membrane electrode.

The most satisfactory result was obtained with the PVC membrane electrode made of the sensor, Crystal violet-dichromate for the dichromate solution of the concentration range of 10??M down to 10??M. The slope factor was almost nernstian value, 27-30mV/decade.

In general, the responsibility of electrodes was not so good as the theoretical value for the food colours, Sunset yellow, Tratrazine, Green S, Amaranth, and Indigo carmine.

An attempt has been made for the development of ion selective electrode to a dye species.

The PVC electrodes using Crystal violet-dichromate, Bismark brown-Indigo carmine and Bismark brown-Sunset yellow among nine kinds of sensing materials prepared here have been tested for their function to certain dye solution.

Anion or cation enchange resin substituted the site by an acid dye molecule or metal ion such as Cu??, Fe?? was pulverized into the size of 200 mesh and also used for the preparation of the PVC membrane electrode for testing their responsibility to a dye solution.

Polyurethane membrane and liquid state electrodes were also prepared and tested their function to dye species along with the PVC membrane electrode.

The most satisfactory result was obtained with the PVC membrane electrode made of the sensor, Crystal violet-dichromate for the dichromate solution of the concentration range of 10??M down to 10??M. The slope factor was almost nernstian value, 27-30mV/decade.

In general, the responsibility of electrodes was not so good as the theoretical value for the food colours, Sunset yellow, Tratrazine, Green S, Amaranth, and Indigo carmine.