العوامل المؤثرة على عمل العنصر الحساس المكون من المزيج الأكسيديBi2O3 -B2O3 -MoO3 من أجل تحديد محتوى غازH2Sفي الأوساط الهوائية

The factors affecting the work of the sensitive element composed of the oxide mixture based on Bismuth and Boron were studied to detect the content of hydrogen sulphide gas in the surrounding environment with concentration equals to that existing in polluted aerial spaces. Empirically, the study revealed the possibility of using the sensitive element in normal conditions with relative humidity of 80 % . It was demonstrated that the conductivity increases as the activating factor added to the active layer increased with optimum value of 2,8 mg/cm2. Experimental results showed that the proportion of Molybdenum Oxide added to the Bismo-Boron mixture and suitable for action of sensitive element to detect the H2S content in the surrounding environment should be around (1-7)% .