Flame luminosity detector

Abstract

The invention relates to a flame luminosity detector which comprises a heating device, a sampling device, a lighting assembly, a light measuring assembly and an auxiliary electronic assembly, wherein the sampling device is a side surface sampling device, the heating device is a double-rod heating device coated by heat insulating cotton, the lighting assembly comprises an inner nozzle and an outer nozzle, the inner nozzle is connected with a carrier gas inlet channel and a hydrogen inlet channel, the outer nozzle is connected with an air inlet channel, the light measuring assembly has double side windows to measure light, both sides of the lighting assembly are respectively provided with two sets of light measuring assemblies which comprise quartz windows, optical filters, a lens and a photomuitplier, and the two optical filters are respectively a phosphorous organic compound detecting optical filter and a sulfur-bearing organic compound detecting optical filter. The flame luminosity detector has compact structure, the side sampling reduces the space structure, the double nozzles ensure the stabilization of inflammation, double side windows of the double-side have no need to replace the optical filters, an organic compound containing phosphor or sulfur can be detected at the same time, the fame luminosity detector is convenient to be installed in a gas chromatograph of a movable testing car and has simple and easy operation.

Description

technical field [0001] The invention relates to a detection device, in particular to a flame photometric detector which is particularly sensitive to phosphorus and sulfur-containing organic compounds and gas sulfides. Background technique [0002] The Flame Photometric Detector (FPD) is a highly sensitive, highly selective detector. Especially for the general case for H 2 Environmental monitoring of S and sulfur-containing gases, and monitoring of trace organophosphorus compounds in pesticides when performing pesticide analysis. In recent years, with the need to prevent and deal with emergencies, various emergency laboratories (mobile test vehicles) have emerged. Environmental protection, food supervision, health and epidemic prevention departments have installed gas chromatographs on mobile The test vehicle was taken to the scene of the incident for testing. The existing chromatographic flame photometric detector is only suitable for ordinary laboratory chromatography, a...

AI Technical Summary

Problems solved by technology

Existing chromatographic flame photometric detectors are only suitable for ordinary laboratory chromatography, and it is not convenient to disassemble the photometric parts and replace the filter when measuring phosphorus-containing or sulfur-containing organic compounds

Moreover, the vehicle-mounted chromatographic column box is mostly designed as a horizontal column box

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