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本文介绍了自行设计制造的三类电子俘获检测器的结构与性能。检测器装在上分-100型层析仪上,用直流电压、普通氮做载气,并用氚-钛放射源。仪器噪声为(2.0—5.0)×10~(-11)安,对CCl_4的敏感度为(2.0—6.3)×10~(-12)克/秒。检测器拆洗方便,气密性、绝缘性好。
This article describes the structure and performance of three types of electron capture detectors designed and manufactured by ourselves. The detector was mounted on a fractional-100 chromatograph using DC voltage, normal nitrogen as the carrier gas and tritium-titanium source. The instrument noise is (2.0-5.0) × 10 ~ (-11) A, and the sensitivity to CCl_4 is (2.0-6.3) × 10 ~ (-12) g / s. Convenient detector washable, air tightness, good insulation.