Syringe pump sample injection gas phase molecule absorption spectrometer

A gas-phase molecule and spectrometer technology, applied in the field of gas-phase molecular absorption spectrometer, can solve the problems of low precision, inability to realize automatic dilution function, low work efficiency, etc., and achieve the effects of improving work efficiency, reducing instrument cost and easy operation.

Inactive Publication Date: 2012-11-21
上海北裕分析仪器股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The peristaltic pump tube of the existing sampling device needs to be replaced frequently, and its accuracy is not high; the automatic dilution function of any ratio cannot be realized; the sampling device can only measure the content of one substance to be measured at a time, and the work efficiency is low. The purpose of the present invention is to provide a gas-phase molecular absorption spectrometer using a syringe pump sampling method, which has high precision and can realize multi-channel analysis

Method used

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  • Syringe pump sample injection gas phase molecule absorption spectrometer
  • Syringe pump sample injection gas phase molecule absorption spectrometer

Examples

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Embodiment 1

[0032] Example 1: Combining figure 1 Illustrate the syringe pump sampling gas phase molecular absorption spectrometer of this embodiment, which includes a sampling device 1, a gas-liquid separation device 2, a heating device 2c, a drying device 3 and a detection device 4 connected in sequence, the sampling device 1 of this embodiment A single-channel sampling method is adopted, which includes a syringe pump 100, a sampling manifold 101 connected to the syringe pump 100, three sampling branch pipes 102 respectively connected to the sampling manifold 101 through a multiport valve 104, and a sampling branch pipe 102 The other ends are respectively arranged in reagent bottles containing different reagents. The output end of the sampling main pipe 101 communicates with the reaction chamber of the gas-liquid separation device 2, so that each reagent participating in the reaction is sequentially added to the reaction chamber, and the output end of the pure water branch pipe 103 commu...

Embodiment 2

[0034] Embodiment 2: Combination figure 2 Illustrate this embodiment, the difference from Embodiment 1 is that the sampling device of this embodiment is a dual-channel sampling method, the output end of the first sampling device A is connected to the first gas-liquid separation device 2a, and the second inlet The output end of sample device B is connected to the second gas-liquid separation device 2b, and the bottoms of the first gas-liquid separation device 2a and the second gas-liquid separation device 2b are each equipped with a water bath or oil bath heater. After the first sampling device A and the first gas-liquid separation device 2a have completed the detection and analysis of the first gas to be measured, the second sampling device B and the second gas-liquid separation The devices 2b work together to complete the detection and analysis of another gas to be measured, so as to realize the rapid detection and analysis of two different gases and improve the working effi...

Embodiment 3

[0035] Example Three: Combining figure 1To illustrate this embodiment, the gas-liquid separation device in the prior art is designed as a closed piston-type reaction bottle, the upper part has a vent pipe inlet leading directly to the bottom of the reaction bottle, the lower part is a glass sand core disperser, and the bottom is provided with a piston for discharging waste liquid , After frequent use, the piston wears a lot and the airtightness is poor, which leads to liquid leakage at the bottom of the reaction bottle. In this embodiment, the gas to be tested after being separated by the gas-liquid separation device 2 passes through the drying device 3 , the water vapor in the mixed gas condenses and flows into the bottom of the reaction chamber, and the dried gas enters the detection device 4 for analysis. In this embodiment, a waste liquid collection device is added, and the bottom of the reaction chamber of the gas-liquid separation device 2 is connected to one end of the ...

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Abstract

The invention discloses a syringe pump sample injection gas phase molecule absorption spectrometer, and relate to the technical field of optical analysis. The spectrometer is aimed at problems that an existing sample injection device needs frequent replacement of a peristaltic pump pipe, has low precision, can not realize function of automatic dilution in any ratio, and can only determine one substance to be measured at one time, with low work efficiency. The spectrometer provided by the invention comprises a sample injection device, a gas-liquid separation device, a drying device, a heating device and a detection device. The sample injection device comprises at least one sample injection pipes; and an output end of the sample injection pipe is connected with the gas-liquid separation device and for sending a reagent to the gas-liquid separation device; the sample injection pipe comprises a syringe pump, a sample injection duct communicating with the syringe pump, and at least one sample injection branch pipe respectively communicating with the sample injection duct and for sending different reagents to the sample injection duct successively. The invention is particularly suitable for determination of indexes of ammonia, sulfide, Kjeldahl nitrogen, total nitrogen, nitrate, nitrite, sulfite, chloride ion, and potassium permanganate.

Description

technical field [0001] The invention relates to the technical field of optical analysis instruments, in particular to a gas phase molecular absorption spectrometer fed by a syringe pump. Background technique [0002] Gas phase molecular absorption spectrometry (hereinafter referred to as GPMAS) is based on the principle that the relationship between the light absorption intensity of the gas decomposed into the measured component and the concentration of the measured component complies with the principle of Beer’s law. , can also determine the measured components for qualitative analysis. The gas-phase molecular absorption spectrometer is based on the principle of GPMAS. It converts the components to be measured in the liquid phase sample into gases through chemical reactions, so that the gas is separated from the liquid phase samples and loaded into the measurement system to measure the content of the gas. A device for measuring the concentration of an ingredient. It is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31
Inventor 陈凡卢文武茅闻婧李明
Owner 上海北裕分析仪器股份有限公司
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