CN1995976A - Steam absorption spectrophotometer - Google Patents
Steam absorption spectrophotometer Download PDFInfo
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- CN1995976A CN1995976A CN 200610045607 CN200610045607A CN1995976A CN 1995976 A CN1995976 A CN 1995976A CN 200610045607 CN200610045607 CN 200610045607 CN 200610045607 A CN200610045607 A CN 200610045607A CN 1995976 A CN1995976 A CN 1995976A
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- absorption spectrophotometer
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Abstract
The absorption spectrophotometer mainly solves the issue of how to transmit the tested sample into basic state sample for evaporation, ashing and final formation of basic particle. Such as the flame atomization. It has the defect of generating background absorption, interference and poor sensitivity. The flowing injection vapor generation device comprise delivery pump, reactor, liquid and gas separator, with the sample to be tested and chemical reducer delivered to reactor, generating gas with the sample, separating the liquid and the gas, sending the gas into the electric thermal quartz capsule of the atomic absorption spectrophotometer. It has small background absorption and interference, with sensitivity level improved three degrees compared with flame atomizer with expanded inspection scope.
Description
Technical field
The present invention relates to a kind of trace element and compound test analytical instrument, particularly a kind of with measured matter, it comprises hydride (mercury, arsenic, selenium, lead, tin, antimony, germanium, tellurium), chloride, sulfide, nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, kjeldahl nitrogen and sulfate etc., carries out atom or molecule absorption analysis again after vaporized.
Background technology
Atomic absorption spectrophotometer (AAS) is a kind of spectral instrument, the characteristic spectrum that cathode modulation sends in will be to instrument when tested sample is converted into ground state atom produces and absorbs, the degree of this absorption and the concentration of sample have relation, the situation of change of spectrum just can be calculated the concentration of sample after through monochromator splitting, opto-electronic conversion, signal Processing.
The problem of a key is how sample to be converted into ground state sample evaporation, ashing in instrument, forms ground state atom at last.The method of flame atomization for example, measure some trace elements in this way and have easy to operate, measuring accuracy advantages of higher, but making the defective of elements such as testing mercury, arsenic, selenium, lead, tin, antimony, germanium, tellurium in this way is that sensitivity is relatively poor, and particularly the method for flame atomization can't be tested materials such as chloride, sulfide, nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, kjeldahl nitrogen and sulfate.
Summary of the invention
The object of the present invention is to provide a kind of steam absorption spectrophotometer that can avoid above-mentioned deficiency.
The object of the present invention is achieved like this: the gas that measured matter is carried out sample material in steam generating device takes place, again this gas is sent in the electrothermal quartz tube in the atomic absorption spectrophotometer (AAS), this atomic absorption spectrophotometer (AAS) can be measured the atom or the molecule absorption signal of gas, is converted to corresponding sample solution concentration value.
Formation of the present invention is: it has atomic absorption spectrophotometer (AAS), it is characterized in that: it also has the flow injection steam generating device, the flow injection steam generating device is by discharge pump, reactor, gas-liquid separator is formed successively, sample and chemical reducing agent are transported to through pump and produce the gas that contains this sample material after reactor mixes, through gas-liquid separator, the gas that will contain this sample material is sent in the electrothermal quartz tube in the atomic absorption spectrophotometer (AAS), this atomic absorption spectrophotometer (AAS) can be measured the atom or the molecule absorption signal of gas, is converted to corresponding value.
Owing to comprise atomic absorption spectrophotometer (AAS) among the present invention, use so it still can be used as atomic absorption spectrophotometer (AAS).
The present invention compares its advantage with the prior art scheme:
1, it can realize materials such as chloride, sulfide, nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, kjeldahl nitrogen and sulfate are tested.
2, it to element tests such as mercury, arsenic, selenium, lead, tin, antimony, germanium, telluriums the time remolding sensitivity flame atomizer height three orders of magnitude.
3, it also can realize atomic absorption formula spectrum test.
Description of drawings
Further specify the present invention below in conjunction with accompanying drawing.
Fig. 1 is the atomic absorption spectrophotometer (AAS) system diagram.
Fig. 2 is interrupted flow injection steam generating device synoptic diagram.
Fig. 3 is an order flow injection steam generating device synoptic diagram.
Embodiment
Referring to Fig. 1, atomic absorption spectrophotometer (AAS) is made up of cathode lamp source 7, lens 6, electrothermal quartz tube 5, monochromator 4, opto-electronic conversion 3, signal Processing 2 and data presentation 1, and it also has interrupted flow injection steam generating device or order flow injection steam generating device.
Referring to Fig. 2, interrupted flow injection steam generating device is made up of peristaltic pump 8, mixing module 9 and gas-liquid separator 10, sample S and reductive agent R send in the mixing module through peristaltic pump and react, through gas-liquid separator, the gas Y that will contain this sample material sends in the electrothermal quartz tube in the atomic absorption spectrophotometer (AAS), this atomic absorption spectrophotometer (AAS) can be measured the molecule absorption signal of gas, is converted to corresponding value.
Referring to Fig. 3, order flow injection steam generating device, one the tunnel is followed successively by discharge pump 12, sampling ring 14, multi-position valve 15, several sample hoses 16 place 18 li of auto injection sample disc, by conduit 17 with the sample delivery in the sample hose to multi-position valve, another road is a reductive agent pipe 21, discharge pump 22 and two-position valve 20, two-way is intersected in reactor 19. through gas-liquid separator 23, the gas that will contain this sample material is sent in the electrothermal quartz tube in the atomic absorption spectrophotometer (AAS), this atomic absorption spectrophotometer (AAS) can be measured the molecule absorption signal of gas, is converted to corresponding value.
The 11st, the cleaning fluid bottle, the 13rd, two-position valve, the 24th, peristaltic pump is carried waste liquid.
Claims (3)
1, a kind of steam absorption spectrophotometer, it has atomic absorption spectrophotometer (AAS), it is characterized in that: it also has the flow injection steam generating device, the flow injection steam generating device is made of successively discharge pump, reactor, gas-liquid separator, sample and chemical reducing agent are transported to through pump and produce the gas that contains this sample material after reactor mixes, through gas-liquid separator, the gas that will contain this sample material is sent in the electrothermal quartz tube in the atomic absorption spectrophotometer (AAS).
2, according to the described steam absorption spectrophotometer of claim 1, it is characterized in that: said flow injection steam generating device is interrupted flow injection steam generating device, and it is made up of peristaltic pump, mixing module and gas-liquid separator.
3, according to the described steam absorption spectrophotometer of claim 1, it is characterized in that: said flow injection steam generating device is an order flow injection steam generating device, one the tunnel is followed successively by discharge pump, sampling ring, multi-position valve, several sample hoses place in the auto injection sample disc, by conduit with the sample delivery in the sample hose to multi-position valve, another road is reductive agent pipe, discharge pump and two-position valve, and two-way is intersected in reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610045607 CN1995976A (en) | 2006-01-06 | 2006-01-06 | Steam absorption spectrophotometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610045607 CN1995976A (en) | 2006-01-06 | 2006-01-06 | Steam absorption spectrophotometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1995976A true CN1995976A (en) | 2007-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610045607 Pending CN1995976A (en) | 2006-01-06 | 2006-01-06 | Steam absorption spectrophotometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1995976A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408504B (en) * | 2007-10-11 | 2010-09-08 | 上海光谱仪器有限公司 | Method for reducing stray light of atomic absorption spectrum instrument using visible cut-off type optical filter and light path system thereof |
-
2006
- 2006-01-06 CN CN 200610045607 patent/CN1995976A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101408504B (en) * | 2007-10-11 | 2010-09-08 | 上海光谱仪器有限公司 | Method for reducing stray light of atomic absorption spectrum instrument using visible cut-off type optical filter and light path system thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |