【摘要】 介绍了导数测量技术在气相色谱信号处理中的应用。导数-气相色谱的热导检测器对苯的灵敏度和敏感度分别达到270kV·L/kg和0.3μg／L。与可分辨导数色谱峰相对应的常规色谱峰最小分离度为2．8。在被测组分质量浓度为8．1～810g／L的范围内，导数峰上峰高、下峰高、总峰高、峰面积均与质量浓度呈线性关系，其线性相关系数分别为0．9911，0．9982，0．9960和0.9991。更多还原

【Abstract】 An application of derivative technique in the signal processing of gas chromatography(GC) is described. TCD’s sensitivity of the derivative GC was 270 kV·L/kg, and its susceptibility was 0. 3 μg/L In comparison with the conventional GC, there was a 7-40 fold increase in sensitivity and a 24-40 fold decrease in susceptibility. The noise of the derivative GC was equal to or smaller than the conventional one. The minimum resolution for a pair of substances most difficultly to be separated in conventional GC, which was separated completely in the derivative GC, was 2. 8. The linear range of n -butanol was 102 and the peak area correlation coefficient of the derivative GC was 0. 999 1.更多还原