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最近研制的氧化锆检测器用于气相色谱系统,够够分析氮、氩、氦等气体中微量氢、氧、甲烷、一氧化碳杂质。检测器的基线飘移为0.1毫米/小时,测量精密度的相对偏差小于5％,测量准确度的相对误差小于10％(在1～10ppm范围内)。氢、氧、甲烷的最小检知浓度为0.1ppm,一氧化碳的最小检知浓度为0.5ppm。文中还讨论了检测器对上述杂质气体的电化学反应机理和影响检测器灵敏度的因素。
Recently developed zirconia detector for gas chromatography system, enough for analysis of nitrogen, argon, helium and other gases trace amounts of hydrogen, oxygen, methane, carbon monoxide impurities. The baseline drift of the detector is 0.1 mm / hr, the relative deviation of the measurement precision is less than 5%, and the relative error of the measurement accuracy is less than 10% (in the range of 1 to 10 ppm). The minimum detectable concentration of hydrogen, oxygen and methane is 0.1 ppm and the minimum detectable concentration of carbon monoxide is 0.5 ppm. The paper also discusses the electrochemical reaction mechanism of the detector on the above impurity gas and the factors that affect the sensitivity of the detector.