CN209215208U - A kind of background correction atomic absorption unit - Google Patents
A kind of background correction atomic absorption unit Download PDFInfo
- Publication number
- CN209215208U CN209215208U CN201821885053.6U CN201821885053U CN209215208U CN 209215208 U CN209215208 U CN 209215208U CN 201821885053 U CN201821885053 U CN 201821885053U CN 209215208 U CN209215208 U CN 209215208U
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- China
- Prior art keywords
- optical path
- main optical
- lamp source
- atomic absorption
- background correction
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Abstract
The utility model discloses a kind of background correction atomic absorption units.The technical solution of the utility model is: a kind of background correction atomic absorption unit, including shell, horizontal positioned strip lamp source is provided in the shell, the side of the strip lamp source is provided perpendicular to the main optical path and reference path of the strip of lamp source, the main optical path and reference path are arranged side by side, the main optical path is connected with gold amalgam adsorption desorption system, and the main optical path includes the inlet end and outlet side for circulating containing mercury gas, and the reference path is connected to surrounding air.Scheme provided by the utility model has a wide range of application and argon gas or the nitrogen easy to use of being not necessarily to is as carrier gas, suitable for unconditionally using the working environment of argon gas and nitrogen；Energy of light source value is big, high sensitivity, and the loss of optical transport is small；Without magnetic field and polarisation system, luminous flux is improved, Instrument Design manufacture does not almost increase too many cost.
Description
Technical field
The utility model relates to atomic absorption spectroscopy field, in particular to a kind of background correction atomic absorption unit.
Background technique
Background correction atomic absorption unit in the prior art there are the shortcomings that first is that need argon gas or nitrogen as carrier gas,
For not being available then using the occasion of argon gas or nitrogen unconditionally, second is that needing using magnetic field and polarisation system, cost bloom
Flux is insufficient.
Utility model content
In view of the deficienciess of the prior art, having a wide range of application the main purpose of the utility model is to provide one kind and making
With convenient background correction atomic absorption unit.
To achieve the above object, the utility model provides following technical solution: a kind of background correction atomic absorption unit,
Including shell, horizontal positioned strip lamp source is provided in the shell, the side of the strip lamp source is provided with vertically
In the main optical path and reference path of the strip of lamp source, the main optical path and reference path are arranged side by side, and the main optical path connects
It is connected to gold amalgam adsorption desorption system, the main optical path includes the inlet end and outlet side for circulating containing mercury gas, the reference
Optical path is connected to surrounding air.
Preferably, the side of the main optical path and reference path facing light sources is provided with photomultiplier tube.
The utility model has the following advantages compared with the prior art, and absorption tube connects gold amalgam all the way in two absorption tubes
Adsorption desorption system, referred to as main line are tested containing mercury gas, and absorption tube leads to surrounding air and referred to as joins for compareing all the way
Examine optical path.The signal that major-minor optical path measures be divided by can background correction, the purpose of device is the stability for improving Atomic absorption pond.Two
A absorption tube is in the same direction, takes light in the same lamp source；Without argon gas or nitrogen as carrier gas, suitable for unconditionally making
With the working environment of argon gas and nitrogen；Energy of light source value is big, high sensitivity, and the loss of optical transport is small；Without magnetic field and polarisation system
System, improves luminous flux, and Instrument Design manufacture does not almost increase too many cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the background correction atomic absorption unit of the utility model.
In figure: 1, shell；2, lamp source；3, main optical path；4, reference path；5, inlet end；6, outlet side；7, photomultiplier transit
Pipe.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of background correction atomic absorption unit, including shell 1, level is provided in the shell 1 and is put
The strip lamp source 2 set, the side of the strip lamp source 2 are provided perpendicular to the main optical path 3 and ginseng of the strip of lamp source 2
Optical path 4 is examined, the main optical path 3 is arranged side by side with reference path 4, and the main optical path 3 is connected with gold amalgam adsorption desorption system, described
Main optical path 3 includes the inlet end 5 and outlet side 6 for circulating containing mercury gas, and the reference path 4 is connected to surrounding air.
A kind of background correction atomic absorption unit of the utility model, because of the purple that mercury vapour is 253.7nm to wavelength
The characteristic of the outer selective absorption of light, in certain concentration range, absorbance is directly proportional to mercury concentration, and the effect of light source is to produce
The raw radiation for absorption, main optical path 3 and reference path 4 the two absorption tubes are equivalent to the colorimetric cylinder of spectrophotometer, hold mercury
Atomic vapour, wherein the volume, shape of absorption tube and instrument sensitivity for analysis have substantial connection, and diameter is smaller, and length is longer, spirit
Sensitivity is higher, and this programme uses elongated strip shaped.Absorption tube connects gold amalgam adsorption desorption system all the way in two absorption tubes, referred to as main
Pipeline is tested containing mercury gas, and gold amalgam adsorption desorption system is the state of the art, and the present embodiment does not do superfluous herein
It states；Absorption tube leads to surrounding air, for compareing, referred to as reference path 4 all the way.The signal that major-minor optical path measures is divided by i.e. deductible
The purpose of background, device is the stability for improving Atomic absorption pond.
The advantages of this programme is that two absorption tubes are in the same direction, takes light in the same lamp source 2；Without argon gas or nitrogen
Gas is as carrier gas, suitable for unconditionally using the working environment of argon gas and nitrogen；Energy of light source value is big, high sensitivity, optical transport
Loss it is small；Without magnetic field and polarisation system, luminous flux is improved, Instrument Design manufacture does not almost increase too many cost.
Preferably, the side of 4 facing light sources of the main optical path 3 and reference path is provided with photomultiplier tube 7.Photoelectricity times
The effect for increasing pipe 7 is to further increase luminous flux, so that energy of light source value enhances, improves measurement sensitivity.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to
Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and
Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (2)
1. a kind of background correction atomic absorption unit, it is characterised in that: including shell, be provided in the shell horizontal positioned
Strip lamp source, the side of the strip lamp source are provided perpendicular to the main optical path and reference path of the strip of lamp source,
The main optical path and reference path are arranged side by side, and the main optical path is connected with gold amalgam adsorption desorption system, and the main optical path includes
For the inlet end to circulate containing mercury gas and outlet side, the reference path is connected to surrounding air.
2. a kind of background correction atomic absorption unit according to claim 1, it is characterised in that: the main optical path and ginseng
The side for examining optical path facing light sources is provided with photomultiplier tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821885053.6U CN209215208U (en) | 2018-11-15 | 2018-11-15 | A kind of background correction atomic absorption unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821885053.6U CN209215208U (en) | 2018-11-15 | 2018-11-15 | A kind of background correction atomic absorption unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209215208U true CN209215208U (en) | 2019-08-06 |
Family
ID=67459672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821885053.6U Expired - Fee Related CN209215208U (en) | 2018-11-15 | 2018-11-15 | A kind of background correction atomic absorption unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209215208U (en) |
-
2018
- 2018-11-15 CN CN201821885053.6U patent/CN209215208U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190806 Termination date: 20201115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |