CN101451951A - Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum - Google Patents
Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum Download PDFInfo
- Publication number
- CN101451951A CN101451951A CNA2007101719801A CN200710171980A CN101451951A CN 101451951 A CN101451951 A CN 101451951A CN A2007101719801 A CNA2007101719801 A CN A2007101719801A CN 200710171980 A CN200710171980 A CN 200710171980A CN 101451951 A CN101451951 A CN 101451951A
- Authority
- CN
- China
- Prior art keywords
- sulphite
- water
- molecular absorption
- gas
- phase molecular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention relates to a method for quantitative determination of sulphite, particularly to a method of measuring content of sulphite in water. A method of measuring content of sulphite in water through gas phase molecular absorption spectrometry, including a gas phase molecular absorption spectrometer, comprises the following steps: step 1 of converting sulphite into gaseous sulfur dioxide; step 2 of using zinc hollow cathode lamp as excitation source, measuring molecular absorption intensity of sulfur dioxide at wavelength 202.6 nm, thereby performing quantitative analysis on sulphite. The inventive method of using measuring content of sulphite in water through gas phase molecular absorption spectrometry has convenient operation, fast analysis speed and small environmental pollution.
Description
Technical field
The present invention relates to the content assaying method of sulphite, relate in particular to a kind of method of measuring the content of sulphite in the water.
Background technology
High speed development along with modern industry, the acid rain that sulfur dioxide pollution forms is increasing to the harm of environment, after sulphuric dioxide enters water body, i.e. mobile equilibrium with sulphite and hydrosulfite is present in the water, fish in the water and hydrobiont are all had certain toxic action, and the dissolved oxygen DO in the rapid consume water of its reductibility mass-energy makes water quality deterioration.At present the analytical work of sulphite is carried out seldom, common analytical approach has spectrophotometric method, chromatography, electrochemical process etc., but these method ubiquity sensitivity are lower, disturb shortcomings such as bigger.Existing utilization spectrophotometry water Central Asia sulphates content the most widely is that sulfite ion in the water sample and tetrachloro mercury nak response are generated stable complex, generates rose purple compound with formaldehyde-hydrochloric acid Pararosaniline effect again and carries out spectrophotometry.Agents useful for same tetrachloro mercury potassium is poisonous reagent, and the waste liquid that is produced need can discharge through certain processing, if deal with improperly then and can cause serious secondary pollution to environment.Simultaneously the fuchsin solution that uses in the method is also required the purity that reaches very high, otherwise very big influence will be arranged the result.When measuring, also can use poisonous reagent tetrachloro mercury potassium, have mercury pollution, environment is caused secondary pollution.
Summary of the invention
The present invention is intended to address the deficiencies of the prior art, and a kind of method of measuring the content of sulphite in the water with gas-phase molecular absorption spectrometry is provided.The method with the content of sulphite in the gas-phase molecular absorption spectrometry mensuration water that the invention provides survey is easy and simple to handle, and analysis speed is fast, and environmental pollution is little.
The present invention is achieved in that
With sulfuric acid solution water sample is carried out acidifying, carrier gas flux 800ml/min, reaction time 15s,
Make sulphite be converted into gaseous sulfur dioxide,
With the zinc hollow cathode lamp is excitation source, measures the molecule absorption intensity of sulphuric dioxide at wavelength 202.6nm place, thereby sulphite is carried out quantitative test.
In order to verify the accuracy of the inventive method, accurately the sodium sulphite standard solution of 10mg/L is prepared in preparation, under acid condition, sulphite is converted into gaseous sulfur dioxide, is excitation source with the zinc hollow cathode lamp, measures the molecule absorption intensity of sulphuric dioxide at wavelength 202.6nm place, sulfite concentration is respectively 10.0mg/L as a result, 9.98mg/L, 9.95mg/L, 10.4mg/L.
The present invention is easy and simple to handle, analysis speed is fast, only needing that water sample is carried out acidifying gets final product, especially for muddy, colourity is high than complicated water sample, compare general volumetric method, the loaded down with trivial details preprocessing process of colourimetry needs, the gas molecule in space absorption process need not that water sample is carried out any pre-treatment and can analyze, and analytical cycle can shorten more than 60%.
Embodiment
Select the waste water of different matrix, comprise natural river water, steel pipe oil-containing, pumping plant water and steel plant's continuous casting waste water, get the 5ml water sample respectively, the sulfuric acid solution acidification with 2mol/L is converted into sulphuric dioxide with inferior sulfate radical:
SO
3 -+ 2H
+SO
2+ H
2O, carrier gas flux 800ml/min, reaction time 15s,
Then, be excitation source with the zinc hollow cathode lamp, measure the molecule absorption intensity of sulphuric dioxide at wavelength 202.6nm place, gained the results are shown in following table.Other gets the 5ml water sample, and adds the sodium sulphite standard solution of 1ml10mg/L in road river, continuous casting water water sample, adds 0.5ml10mg/L sodium sulphite standard solution in steel pipe oil-containing, the 1# pumping plant water sample, and the gained mark-on reclaims and the results are shown in Table 1:
Table 1 is measured the sulphurous acid content of various sample with method mark-on of the present invention
Claims (3)
1. a gas-phase molecular absorption spectrometry is measured the method for the content of sulphite in the water, it is characterized in that it comprises a gas phase molecular absorption spectrometer, and described method comprises the following steps:
Step 1 is converted into the gaseous sulfur dioxide step with sulphite;
Step 2 is an excitation source with the zinc hollow cathode lamp, measures the molecule absorption intensity of sulphuric dioxide at wavelength 202.6nm place, thereby sulphite is carried out quantitative test.
2. gas-phase molecular absorption spectrometry according to claim 1 and 2 is measured the method for the content of sulphite in the water, it is characterized in that, described step 1 is to utilize sulfuric acid that water sample is carried out acidifying, and reaction equation is:
Wherein sulfuric acid concentration is 2.0mol/L-4.0mol/L, and carrier gas flux is 600ml/min-800ml/min, and the reaction time is 10s-20s.
3. gas-phase molecular absorption spectrometry according to claim 1 and 2 is measured the method for the content of sulphite in the water, it is characterized in that, the sulfur dioxide concentration scope that this method is measured is 0.5-8.0mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101719801A CN101451951A (en) | 2007-12-07 | 2007-12-07 | Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101719801A CN101451951A (en) | 2007-12-07 | 2007-12-07 | Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101451951A true CN101451951A (en) | 2009-06-10 |
Family
ID=40734316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101719801A Pending CN101451951A (en) | 2007-12-07 | 2007-12-07 | Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101451951A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128790A (en) * | 2010-12-06 | 2011-07-20 | 山东电力研究院 | Method for measuring sulfate ions in scaled component of water vapor system in power station |
| CN102213678A (en) * | 2010-04-07 | 2011-10-12 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Sulfite detection test paper and preparation method thereof |
| CN102967598A (en) * | 2012-11-02 | 2013-03-13 | 苏州金宏气体股份有限公司 | Method for detecting total sulfite content in high-purity ammonia |
| CN105911009A (en) * | 2016-06-02 | 2016-08-31 | 上海北裕分析仪器股份有限公司 | Method for performing chemical oxygen demand testing by means of gaseous phase molecular absorption spectroscopy |
| CN106092943A (en) * | 2016-06-02 | 2016-11-09 | 上海北裕分析仪器股份有限公司 | A kind of method using gas-phase molecular absorption spectrometry method to carry out COD test |
-
2007
- 2007-12-07 CN CNA2007101719801A patent/CN101451951A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213678A (en) * | 2010-04-07 | 2011-10-12 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | Sulfite detection test paper and preparation method thereof |
| CN102128790A (en) * | 2010-12-06 | 2011-07-20 | 山东电力研究院 | Method for measuring sulfate ions in scaled component of water vapor system in power station |
| CN102128790B (en) * | 2010-12-06 | 2012-04-04 | 山东电力研究院 | Method for measuring sulfate ions in scaled component of water vapor system in power station |
| CN102967598A (en) * | 2012-11-02 | 2013-03-13 | 苏州金宏气体股份有限公司 | Method for detecting total sulfite content in high-purity ammonia |
| CN105911009A (en) * | 2016-06-02 | 2016-08-31 | 上海北裕分析仪器股份有限公司 | Method for performing chemical oxygen demand testing by means of gaseous phase molecular absorption spectroscopy |
| CN106092943A (en) * | 2016-06-02 | 2016-11-09 | 上海北裕分析仪器股份有限公司 | A kind of method using gas-phase molecular absorption spectrometry method to carry out COD test |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Meng et al. | Chemiluminescence determination of sulfite in sugar and sulfur dioxide in air using Tris (2, 2′-bipyridyl) ruthenium (II)-permanganate system | |
| CN101672790A (en) | Quick detecting tube for micro-hydrogen sulfide gas | |
| CN101451951A (en) | Method for detecting content of sulfite in water by gas-phase molecular absorption spectrum | |
| CN104062281B (en) | Method for detecting content of chromium, content of tin and content of arsenic in ferromanganese | |
| CN102279183A (en) | Method of detecting COD in high chlorine water with chloride oxygen demand calibration curve-sealed digestion method | |
| CN101551367B (en) | Low pressure ion-exclusion chromatography for synchronously analyzing chloride and sulphide | |
| Liang et al. | Flow injection analysis of ultratrace orthophosphate in seawater with solid-phase enrichment and luminol chemiluminescence detection | |
| CN102221530B (en) | Method for automatically analyzing sulfide in water sample | |
| Jiang et al. | Catalytic resonance scattering spectral method for the determination of trace amounts of Se | |
| CN105445208A (en) | Determination method for trace thallium in high-salt waste water | |
| CN102539352B (en) | Determination method of cyanogen in thiocyanate | |
| CN104089956A (en) | Quick water iodine testing kit and testing method thereof | |
| Jiang et al. | Simple and fast detection of homocysteine by cucurbit [7] uril fluorescent probe based on competitive strategy | |
| CN101639443A (en) | Method for rapidly and accurately determining sulphur element content in fluorite | |
| CN103712930A (en) | Method for determining content of hydrogen peroxide | |
| Zhang et al. | Large-volume constant-concentration sampling technique coupling with surface-enhanced Raman spectroscopy for rapid on-site gas analysis | |
| CN109975285A (en) | The detection method of nitrate anion in a kind of molybdenum base sample | |
| CN109020917B (en) | Fluorescent molecular probe for identifying phosphate ions in water environment and preparation method thereof | |
| CN103499570B (en) | Portable injection chemiluminescence measures pick-up unit and the method for water body inorganic mercury | |
| CN106841074A (en) | The analysis method of hydroxy amino urea | |
| CN110823858A (en) | Novel method for measuring mercury ion content in solution system | |
| CN110687061A (en) | Formaldehyde solution detection method based on spectrometer | |
| CN103063654A (en) | Determination method of sodion content in trioxymethylene solution | |
| CN103091303B (en) | Method for detecting alkali metal elements in drinking water | |
| CN110441243A (en) | It is a kind of based on film enrichment and UV-vis DRS spectrum underwater trace copper ion quantitative analysis method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090610 |