论文部分内容阅读
热导检测器是气相色谱仪中最常用的检测器,目前,热导检测器的电路控制方面已有了新的进展。将原来恒压电源改为恒流电源及恒热丝温度电源,尤其是采用恒热丝温度电源,线性范围可扩大10倍,灵敏度可提高8倍,响应时间常数也有提高。最近,陈祖望等参考英国F17型色谱仪的电路,用国产普通电子元件试制一种恒热丝温度控制电路,用于102型色谱仪热导池也获得良好结果。
Thermal conductivity detectors are the most commonly used detectors in gas chromatographs. At present, new advances have been made in the electrical control of thermal conductivity detectors. The original constant voltage power supply to the constant current power supply and constant hot wire temperature power supply, especially the constant hot wire temperature power supply, the linear range can be expanded 10 times, the sensitivity can be increased 8 times the response time constant has also been improved. Recently, Chen Zuwang and other reference British F17-type chromatographic circuit with a common domestic electronic components trial of a constant hot wire temperature control circuit for the 102-channel thermal conductivity of the cell also received good results.