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常规电位溶出分析(P.S.A)和微分电位溶出分析(D.P.S.A)的模拟仪器[1][2],难于准确控制预电解电位和扣除背景。对P.S.A而言,难于准确记录溶出过渡时间,无法放大时间参量。因此,模拟仪器的灵敏度、分辨率较差。为解决上述问题,本系统采用DBJ-Z80单板机,配以相应接口、控制线路及软件,根据P.S.A理论曲线方程[3]和我们推导的D.P.S.A理论曲线方程,在该机上实现了一次实验就可分别给出P.S.A和D.P.S.A两种分析结果。实验结果可用X-Y记录仪绘出实验曲线,也可打印输出,或两者同时给出。在该机上验证了D.P.S.A理论,结果与理论相符。分析的准确度、灵敏度、分辨率均优于模拟仪器,达到了国外微机控制的同类仪器[4]～[7]水平。
It is difficult to accurately control the pre-electrolysis potential and background subtraction by the conventional instruments [1] [2] of P.S.A and D.P.S.A. For P.S.A, it is difficult to accurately record the dissolution transition time and the time parameter can not be amplified. Therefore, the analog instrument sensitivity, poor resolution. In order to solve the above problems, the system uses DBJ-Z80 single-board machine, with the corresponding interface, control lines and software, according to the PSA theoretical curve equation [3] and our derived DPSA theoretical curve equation, the machine to achieve an experiment PSA and DPSA can be given two kinds of analysis results. Experimental results X-Y recorder can be used to draw the experimental curve can also be printed output, or both at the same time. D.P.S.A theory was validated on this aircraft and the results were in agreement with the theory. The accuracy, sensitivity and resolution of the analysis are superior to those of analog instruments and reached the level of similar instruments controlled by foreign computers [4] ~ [7].