CN2586156Y

CN2586156Y - Atomic spectrum signal detector

Info

Publication number: CN2586156Y
Application number: CN 02259096
Authority: CN
Inventors: 权朕; 郭跃安; 孙克坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-19
Filing date: 2002-12-19
Publication date: 2003-11-12
Anticipated expiration: 2012-12-19

Abstract

The utility model relates to an atomic spectrum signal detector. An atomic absorption analyzer is served as an important instrument for detecting elemental compositions contained in different substances; an atomic fluorescence analyzer has very high sensitivity and very low detection limit when analyzing some elements; both the analyzers have the defects that the instruments have very good detection limit, sensitivity and linear range for only some elements and does not have ideal detecting index for some other elements limited by factors of instrument structure, dispersion element, analytical method analysis approach, etc. The utility model is simultaneously provided with an atomic fluorescence steam generator, an atomic absorption flame device and optical path system devices adopted by the two devices on one detection device, and combines the atomic absorption analyzer and the atomic fluorescence analyzer, and therefore, the atomic spectrum signal detector has the advantages of simple structure and better detection limit, sensitivity and linear range.

Description

The atomic spectrum signal supervisory instrument

One, technical field:

The utility model relates to light, mechanical, electrical integration product, is a kind of atomic spectrum signal supervisory instrument specifically.

Two, technical background:

After contained elemental composition was measured in the atomic absorption theory is applied to material, this technology had obtained development fast, and is widely used in every field.Atomic absorption analyzer is in the research and the history in existing more than 20 year of application work of China, it is the large-scale optical detecting instrument that a kind of application surface is very wide, use is popularized very much, because its maturity of technology is so often be used as the important means that contained elemental composition in the different material is measured.And the atomic fluorescence analysis instrument is to some elements (for example arsenic, antimony, selenium, bismuth, mercury etc.) when analyzing; compare with atomic absorption analyzer; have very high sensitivity and extremely low detection limit; also be widely used in fields such as environmental protection, food, health, geological mapping and mine, and have the trend of quick growth.But in the use of reality, though two kinds of analysers have the advantage of oneself separately, simultaneously, also all exist weak point separately, it mainly shows as: be subjected to the restriction of principle of instrument, apparatus structure, dispersion element and analytical approach, a certain instrument only has good detection limit, sensitivity and the range of linearity to certain some element, but undesirable for the detection index of other elements.

Three, summary of the invention:

The purpose of this utility model is to provide a kind of atomizer part and light path system with atomic absorption analyzer and atomic fluorescence analysis instrument organically to be combined as a whole, thus form a cover have can measure elemental range wide, simple in structure, have an atomic spectrum signal supervisory instrument of detection limit, sensitivity and the range of linearity preferably.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of atomic spectrum signal supervisory instrument, comprise radiation source, signal supervisory instrument, data processing equipment, its special character is: described atomic spectrum signal supervisory instrument is provided with atomic fluorescence steam generating device 1, atomic absorption flame attachment 2 and two kind of light path system device that device adopts thereof; Described atomic fluorescence steam generating device 1, atomic absorption flame attachment 2 communicate with atomizer 3, and its light path system device is separately positioned on atomic fluorescence flame attachment 1, the atomic absorption flame attachment 2.

Above-mentioned atomic fluorescence steam generating device 1, atomic absorption flame attachment 2 are provided with reversing arrangement 4 with the pipeline opening that communicates of atomizer 3.

The light path system device of above-mentioned atomic fluorescence atomizer device 1 be the light path system device of multichannel feature light source.

Above-mentioned reversing arrangement 4 is a reversal valve.

The utility model is with respect to prior art, and its advantage is as follows:

1, the utility model can carry out atomic absorption spectrum (AAS) and atomic fluorescence spectrophotometry (AFS) analysis simultaneously, but not only enlarged the scope of analytical element, and can guarantee that tested element all has good detection index, simultaneously, with the function and two of two kinds of instruments is one, also can reduce production costs, improve cost performance of product.

2, have hyperchannel, can carry out the assay determination of a plurality of elements simultaneously, under the cooperation of sample-pretreating method and analytical approach, make AAS method and the tie-in of AFS method become possibility;

3, produce on the circuit at control wave, extensive programmable chip and Programmable Technology have been adopted, make the control signal that is produced have regularly accurate, characteristics such as time delay is adjustable, high conformity, guarantee the timing relationship between signal generation and the signal capture control signal, guaranteed the reliability and stability that hyperchannel is worked simultaneously.

Four, description of drawings:

Fig. 1 is the structural representation of the utility model integral body;

Fig. 2 is the structural representation of the utility model optical system;

Five, embodiment:

The utility model is under the prerequisite of the principle of having studied atomic absorption spectrography (AAS) (AAS) and two kinds of instruments of atomic fluorescence spectrometry (AFS) fully, reasonably, organically atomizer part and the light path system with two kinds of instruments is combined as a whole, thus forming a cover has and can measure the wide device of elemental range; This device is when considering the general character that instrument has, the individual character partial design of instrument is integrated, like this, not only the advantage of two kinds of analytical approachs can be concentrated on the instrument, performance, the function and application scope of instrument have been improved effectively, simultaneously can reduce production cost of products, improve the sexual valence of product on market competitive power when.

Referring to Fig. 1, the utility model is the atomic spectrum signal supervisory instrument, its structure is consistent with some general character of Atomic Absorption Spectrometer, atomic fluorescence spectrometer, include parts such as radiation source, signal supervisory instrument, data processing equipment, sprayer 5, atomizer 3, three-dimensional regulation platform 6, and the utility model and Atomic Absorption Spectrometer, atomic fluorescence spectrometer difference are being respectively arranged with atomic fluorescence steam generating device 1, atomic absorption flame attachment 2 and two kind of light path system device that device adopts thereof for it.

Atomic fluorescence steam generating device of the present utility model and light path system device thereof are identical with the structure of atomic fluorescence spectrometer of the prior art; And the light path system device of atomic absorption flame attachment of the present utility model and employing thereof is identical with the structure of Atomic Absorption Spectrometer of the prior art; Its difference is communicating with atomizer 3 with atomic fluorescence steam generating device 1 of the present utility model, atomic absorption flame attachment 2, in its pipeline opening that communicates reversing arrangement 4 is set, can be reversal valve, can realize that atomic fluorescence steam generating device 1, atomic absorption flame attachment 2 communicate respectively with atomizer 3.

During work, when needs use atomic absorption spectrography (AAS) to detect the content of element, reversing arrangement 4 is opened, atomic absorption flame attachment 2 is communicated with atomizer 3, thus the content by existing signal supervisory instrument, data processing equipment detection elements;

When needs used atomic fluorescence spectrometry to detect the content of element, atomic fluorescence steam generating device 1 communicated with atomizer 3, again the content by existing signal supervisory instrument, data processing equipment detection elements.When needs detect multiple element, the light path system device of atomic fluorescence steam generating device of the present utility model be the light path system device of multichannel feature light source, as four road light path system devices etc., but need its control device to control respectively.

The utility model is reasonably designed cover instrumental optics system unique, that be applicable to two kinds of analytical approachs according to the principle of atomic spectroscopy; Because tested element is in its atomizing process, can absorb (or under the radiation of characteristic light, sending fluorescence) to characteristic light, and the degree that absorbs for the characteristic light power of fluorescence (or send), relevant with the concentration of contained element in the measured matter, detecting device detects the content of element just according to intensity variations.

Referring to Fig. 2, when tested element by atomizer, and by after the atomization, when adopting the atomic absorption analysis method that element is measured, light path of the present utility model is A-A '; And when adopting the atomic fluorescence analysis method to measure, light path of the present utility model is B-B '; Can also under the cooperation of analytical approach, with two kinds of analytical approachs element be measured simultaneously;

Because relate to exciting and corresponding signals collecting of multichannel feature light source in the utility model, thus all adopted the mode of modulation to control to the feature light source, and under the control of corresponding restituted signal, useful signal is gathered; When working simultaneously, have enough energy, useful signal is effectively separated in order to guarantee the feature light source effectively for hyperchannel, so, pulse control signal promptly will have certain adjustable extent, can tell each signal again, and it is independent of each other each other.The utility model has adopted the method for designing of sequential digital circuit, it is based on programmable logic chip, the control wave that is produced all with master clock frequency as benchmark, thereby guaranteed the timing accuracy of the control wave that produced, compare with traditional control wave generation circuit, it has been eliminated because the timing accuracy that component parameters difference is caused is poor, deficiencies such as the non-adjustable and adjustment method complexity of timing relationship, have regularly accurately, pulse width is adjustable, pulse is initial, termination time can be provided with, characteristics such as controlling of sampling pulse delay time is adjustable, and debugging is simple, the gating pulse high conformity that is produced.

The principle of atomic absorption spectrum (AAS) and atomic fluorescence spectrophotometry (AFS) produces owing to the utility model is based on; so ultimate principle according to atomic spectroscopy; the moulding of its optical system and atomizer part also can develop out various ways; so; variation on the different shape or accommodation; only otherwise break away from flesh and blood of the present utility model, all belong to institute and state also claimed interest field.

Claims

1, a kind of atomic spectrum signal supervisory instrument, comprise radiation source, signal supervisory instrument, data processing equipment, it is characterized in that: described atomic spectrum signal supervisory instrument is provided with atomic fluorescence steam generating device (1), atomic absorption flame attachment (2) and two kinds of light path system devices that device adopts thereof; Described atomic fluorescence steam generating device (1), atomic absorption flame attachment (2) communicate with atomizer (3), and its light path system device is separately positioned on atomic fluorescence flame attachment (1), the atomic absorption flame attachment (2).

2, according to claims 1 described atomic spectrum signal supervisory instrument, it is characterized in that: described atomic fluorescence steam generating device (1), atomic absorption flame attachment (2) are provided with reversing arrangement (4) with the pipeline opening that communicates of atomizer (3).

3, according to claims 1 or 2 described atomic spectrum signal supervisory instruments, it is characterized in that: the light path system device of described atomic fluorescence atomizer device (1) be the light path system device of multichannel feature light source.

4, according to claims 3 described atomic spectrum signal supervisory instruments, it is characterized in that: described reversing arrangement (4) is a reversal valve.