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DFY-12型高速定碳定硫自动分析仪是上海第二分析仪器厂生产的一种碳、硫同时自动分析设备。它是通过电导法来进行碳、硫测定的。该仪器具有分析速度快、劳动强度低、操作简单等优点。但由于测试方法存在一定问题,如在使用过程中仪器不稳定,重现性差,定碳吸收液因产生BaCO_3沉淀而污染电极,定硫吸收液(重铬酸钾稀溶液)极易失效等等,致使仪器无法正常工作.为此,对吸收液的选择、吸收液的浓度对电极灵敏度和线性关系的影响,吸收液的稳定性等进行了一些试验,在不改动仪器的情况下,找到了较好的测试条件,提高了仪器测定的准确度和重现性.
DFY-12-type high-speed fixed carbon sulfur analyzer is the second Shanghai Analytical Instrument Factory production of carbon and sulfur at the same time automatic analysis equipment. It is through the conductivity method for carbon and sulfur determination. The instrument has the advantages of fast analysis, low labor intensity, simple operation and so on. However, due to the test method there are some problems, such as instability in the process of using the instrument, poor reproducibility, fixed carbon absorption due to the precipitation of BaCO 3 precipitates and the electrode, sulfur absorption solution (dilute potassium dichromate solution) can easily failure , So that the instrument does not work properly.Therefore, the selection of the absorption liquid, the concentration of the absorption liquid on the sensitivity and linearity of the electrode, the stability of the absorption liquid were tested, without changing the instrument to find the Better test conditions, improve the accuracy and reproducibility of the instrument.