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Gas phase molecular absorption spectrometer

A gas-phase molecule and spectrometer technology, applied in the field of gas-phase molecular absorption spectrometer, can solve the problems of long analysis time, no online heating, and many operation steps, and achieve the effects of good analysis sensitivity and precision, wide application range and simple operation

Active Publication Date: 2009-10-07
上海北裕分析仪器股份有限公司
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Problems solved by technology

[0015] The purpose of the present invention is to provide a gas-phase molecular absorption spectrometer, which solves the problem that the existing gas-phase molecular absorption spectrometer has many operating steps, the analysis results are greatly affected by the skills of the operator, it is easy to leak air, the analysis time is long, human intervention is required, and there is no online heating function. question

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Embodiment Construction

[0036] The specific implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0037] Such as figure 1 As shown, the gas-phase molecular absorption spectrometer disclosed in the present invention includes a sampling device, a heating device, a gas-liquid separation device, a drying device and a detection device. Also, if Figure 11 , the sampling device inputs the reagents and samples needed for the reaction into the multi-way tube 43 through the peristaltic pump 41, and then the carrier gas delivered by the pressure stabilizing valve 42, i.e. air (or nitrogen), is delivered to the heating device at the same time, during the delivery process A mixture of gas and liquid is formed. The peristaltic pump is a common four-channel or two-channel structure on the market, and the multi-way tube can be selected from five-way tubes, four-way tubes or three-way tubes according to needs. After the mixture passes thr...

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Abstract

The invention discloses a gas phase molecular absorption spectrometer comprising a sampling device, a gas liquid separation device, a drying device and a detection device, and is characterized in that the gas liquid separation device comprises a sampling port 1, a reaction chamber 2, a gas outlet 3, a connector outlet 4, a waste liquid exhaust port 5 and a pressure balance port 6. The sampling port 1 is communicated with the reaction chamber 2, and the reaction chamber 2 is communicated with the waste liquid exhaust port 5 and the pressure balance port 6 through the connector outlet 4. The gas phase molecular absorption spectrometer provided by using the invention simplifier the operation, strengthens the objectivity of analysis result, leads to better analysis flexibility and precision, realizes automatic on-line heating, and broadens the application range.

Description

technical field [0001] The invention relates to the technical field of optical analysis instruments, in particular to a gas phase molecular absorption spectrometer. Background technique [0002] The theoretical research work of gas phase molecular absorption spectroscopy began in the 1970s. In 1976, Gresser and others first proposed the method (Gas-Phase Molecular Absorption Spectrometry, referred to as GPMAS). Syty first applied this method to measure SO 2 , analysts have since successfully measured corrosive, volatile gases such as I 2 and Br 2 、H 2 S, NOCL, HCN, NO 2 [ and NO, Rechikov et al. determined the hydrides of B, N, P, As, Sb, Si, Ge, Sn in the hydride gas mixed with the inert gas used in the semiconductor process. However, all the work at that time was limited to the use of theoretical research in the laboratory. Scientists only built simple reaction devices based on chemical principles and initially realized the application of this technology. Due to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
Inventor 陈凡
Owner 上海北裕分析仪器股份有限公司
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