CN106338508A - Online silicon dioxide analyzer and method for analyzing content of silicon dioxide in water - Google Patents

Online silicon dioxide analyzer and method for analyzing content of silicon dioxide in water Download PDF

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Publication number
CN106338508A
CN106338508A CN201610952918.5A CN201610952918A CN106338508A CN 106338508 A CN106338508 A CN 106338508A CN 201610952918 A CN201610952918 A CN 201610952918A CN 106338508 A CN106338508 A CN 106338508A
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China
Prior art keywords
silicon dioxide
data handling
handling system
water
sample
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CN201610952918.5A
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Chinese (zh)
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张宝军
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Datang Northeast Electric Power Test and Research Institute Co Ltd
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Datang Northeast Electric Power Test and Research Institute Co Ltd
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Priority to CN201610952918.5A priority Critical patent/CN106338508A/en
Publication of CN106338508A publication Critical patent/CN106338508A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/76Chemiluminescence; Bioluminescence

Abstract

The invention relates to an online silicon dioxide analyzer and a method for analyzing content of silicon dioxide in water. A chemiluminescence principle is adopted, that is, after silicon in a water sample generates heteropoly acid, an oxidation light-emitting agent emits light, the light intensity and the silicon content are in a corresponding relation, a photoelectric element is used to measure the light intensity, and a constrast of the light intensity and a standard curve of an instrument memory is made, and the silicate content is displayed and printed. A system comprises a chemical reaction system, a photoelectric measurement system and a control and data processing system, wherein the chemical reaction system is used for finishing the whole process of chemical reaction; the photoelectric measurement system is used for converting chemical luminous light intensity into electrical signals; the control and data processing system is used for the situation that under the control by special software, a controller receives signals emitted by each water level sensor, each temperature sensor, each water flow sensor and each photocurrent sensor and the like and instruction signals of a touch operation key, controls each solenoid valve and corresponding circuits according to a predetermined program, displays all operations and monitored contents in a liquid crystal mode and gives an alarm when each parameter is abnormal.

Description

Dioxide-containing silica analysis method in online silicon dioxide analyser and water quality
Technical field
The present invention relates to a kind of online silicon dioxide analyser and dioxide-containing silica analysis method.
Background technology
In oil, the field such as chemical industry, electric power online silicon dioxide analyser is used for, and needs the silicon dioxide in water quality is contained Amount carries out real-time precision measurment, to reach the content of real-time control silicon dioxide, prevents the time delay that sampling method measurement brings Impact to equipment is it is ensured that the normal operation of equipment and life-span.
Traditional online silicon dioxide analyser adopts spectrophotography (molybdenum blue colorimetric method), and its principle is: in acid bar Under part, the activated silica in water generates molybdenum yellow with molybdate reagent, with reducing agent, molybdenum yellow is reduced into silicon molybdenum blue, instrument is passed through Spectrophotography determines the concentration of this material.
Molybdenum blue colorimetric method has the shortcomings that-individual very big, because silicomolybdic acid has α type and the two kinds of isomers of β type, to analysis precision Have a significant impact.Familiar molybdenum blue compound is all generated, α type heteropoly acid produces turquoise during both isomers reduction;β Type produces navy blue, and β type molar absorption coefficient is about the twice of α type.Because, under Low acid, α type isomer is stable, and β type is different Structure body, under highly acidity, is converted into α type,.This means that the navy blue that silicate generates is faded continuous, cause measurement error.
Simultaneously using molybdenum blue colorimetric method principle instrument minimum want 15 minutes (80% content), typically all more than 20 minute A measurement process can be completed it is impossible to meet the requirement detecting at the scene.In many, when anion exchanger loses efficacy, silicon contained Amount increases very soon, and it is qualified that previous water sample starts to detect, it is underproof for going out result to the 2nd water sample detection, quite Go in half an hour, have substantial amounts of unqualified water to come in follow-up equipment.
In view of above-mentioned defect, the design people's actively in addition research and innovation, divide to founding a kind of online silicon dioxide Analyzer and dioxide-containing silica analysis method are so as to more the value in industry.
Content of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of rational in infrastructure, make use of chemiluminescence principle The online silicon dioxide analyser of silicon ion content and dioxide-containing silica analysis method in measurement water sample.
The present invention online silicon dioxide analyser, comprising: chemical reaction system, photoeletric measuring system, central authorities control sum According to processing system;
Described chemical reaction system, including some medicine-chests for storing different agents, reaction tank, sampling storage tank, Wherein, described medicine-chest at least includes the first medicine-chest for storing molybdic acid ammonium reagent and the second medicine for storing luminescence reagent Case, each described medicine-chest is passed through the respective medicinal liquid tube for transfusion connecting and is connected with described reaction tank, and each described medicinal liquid tube for transfusion divides It is not provided with dosing pump;It is provided with liquidometer, if described sampling storage tank is by main line sampling intake line in described sampling storage tank The water sample system containing silicon dioxide for the connection, described sampling intake line is provided with the first electromagnetic valve and regulating valve;Described adopt Sample storage tank is connected with described reaction tank by sample tube for transfusion, and described sample tube for transfusion is provided with the second electromagnetic valve;
Photoeletric measuring system is arranged on the side of described reaction tank, and described photoeletric measuring system includes will be anti-for described chemistry Light radiation that chemical reaction sends is converted to electricity to answer the water sample of the silicon dioxide in system, molybdic acid ammonium reagent, luminescence reagent to carry out Signal photomultiplier tube;
Data handling system, respectively with the first electromagnetic valve of chemical reaction system, the second electromagnetic valve, regulating valve, dosing pump And liquidometer is connected, according to predetermined programme-control first electromagnetic valve, the second electromagnetic valve, regulating valve, dosing pump, liquidometer Working condition.
Further, also include the telecommunications for showing photoeletric measuring system output being connected with described data handling system The LCDs of number collection of illustrative plates.
Further, described medicinal liquid tube for transfusion is provided with heater, and described heater is arranged on medicine-chest and dosing Between pump, described heater is connected with described data handling system, receives the control of described data handling system.
Further, described sample tube for transfusion is provided with heater, described heater and described data handling system It is connected, receive the control of described data handling system.
Further, it is provided with magnetic stirring apparatuss in described reaction tank, described magnetic stirring apparatuss and described data handling system It is connected, receive the control of described data handling system.
Further, described medicine-chest also includes the 3rd medicine-chest for storing standard reagent sample.
Further, described sampling storage tank and reaction tank are respectively connected with bleed valve, the bleed valve of described reaction tank It is also associated with drainage pump and reaction tank between, described bleed valve drainage pump is all connected with described data handling system, receive institute State the control of data handling system.
Dioxide-containing silica analysis method in water quality of the present invention, using above-mentioned online silicon dioxide analyser using as follows Step is analyzed, and described step specifically includes:
Data handling system is according to the first electromagnetic valve on the sampling intake line described in predetermined programme-control and regulation The open degree of valve with adjust silicon dioxide water sample system water sample with predetermined flow rate input sample storage tank, when liquidometer measurement When water level in sampling storage tank reaches predetermined water level, stop inputting water sample in sampling storage tank;
Data handling system passes through to control the aperture of the second electromagnetic valve to input in reaction tank by the water sample sampled in storage tank, Data handling system controls the working condition of dosing pump so that molybdic acid ammonium reagent injection reaction tank, controls magnetic stirring apparatuses to carry out Stirring, sample water and molybdic acid ammonium reagent fully react generation molybdic acid Huang solution;
Luminescence reagent enters in reaction tank and carries out reaction generation chemiluminescence, described photoeletric measuring system with molybdic acid Huang solution Gather the light radiation that described chemiluminescence produces, and convert light radiation to electric signal output to data handling system;
The silicon ion that described data handling system carries out data processing according to the described signal of telecommunication, analysis measurement goes out in water sample contains Amount.
Further, also include step water sample, molybdic acid ammonium reagent and luminescence reagent being heated using heater Suddenly.
Further, also include for the standard reagent in the 3rd medicine-chest and water sample carrying out reaction generation molybdic acid Huang solution, send out Light reagent carries out reaction with molybdic acid Huang solution and produces chemiluminescence, and described photoeletric measuring system gathers what described chemiluminescence produced Light radiation, and convert light radiation to electric signal output to data handling system, according to this signal of telecommunication to described online dioxy The step that SiClx analyser is calibrated.
By such scheme, the present invention online silicon dioxide analyser and dioxide-containing silica analysis method at least have with Lower advantage:
Employ chemiluminescence principle, that is, silicon in water sample generates heteropoly acid rear oxidation luminous agent and lights, luminous intensity with Silicone content becomes corresponding relation, measures luminous intensity with photoelectric cell and the standard curve with instrument internal memory is compareed, and display is beaten Print off silicate content.
The present invention is not required to special maintenance maintenance in life-time service, and special-purpose software has designed in abnormal cases can be timely Report to the police, it is to avoid failure propagation, as long as using on request, can normal work for a long time.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, And can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Brief description
Fig. 1 is the structural representation of the present invention online silicon dioxide analyser.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Hereinafter implement Example is used for the present invention is described, but is not limited to the scope of the present invention.
Chemiluminescence is not by light, heat or electric energy but light radiation produced by chemical reaction excited species, has spirit The advantage that sensitivity is high, analyze speed is fast, the range of linearity is wide, it be the enough energy being provided based on chemical reaction so as in A kind of molecule of product be excited, form excited state molecule, when they jumps back ground state from excited state, be issued by necessarily The light of wavelength, this process can be expressed as follows with reaction equation:
a+b-c*+d
c*-c+hv
Produce chemiluminescent reaction, should possess following conditions:
(1) chemistry must be able to release enough energy, to cause electron excitation, generally only has those response speeds quite fast Exothermic reaction, its △ h is between 170-300kj mol-1Between, could observe in visible-range
Chemiluminescence phenomenon, the energy that many redox reaction are provided is suitable with this, therefore most of chemiluminescences React for redox reaction.
(2) chemical reaction process that will be favourable, so that produced energy is used for being constantly be generated excited state molecule.
(3) excited state molecule jump back ground state when, to can discharge photon, rather than consumed energy in the form of heat.
The luminous intensity of chemiluminescence reaction, is represented with the number of photons of transmitting in the unit interval, in luminesceence analysis, is divided The concentration of analysis thing is much smaller compared with luminescence reagent, therefore luminescence reagent concentration is regarded as a constant, and therefore luminescence-producing reaction can It is considered as pseudo first-order reaction.
The present invention takes water sample automatically, the silicon in water sample under sour environment with ammonium molybdate reaction, generate binary heteropoly acid (silicomolybdic acid), when this heteropoly acid is mixed with luminous agent oxyluminescence agent produce chemiluminescence. its luminous intensity change over and Difference, will soon obtain stronger luminous (peak value), with the consumption of reactant, light intensity gradually decreases, and finally becomes after mixing It is bordering on zero, meets first order reaction rule, under the appropriate reaction conditions, above-mentioned peak value becomes line with analyte (silicate) content Sexual intercourse. using photoelectric cell, above-mentioned luminous overall process is converted to the change of the signal of telecommunication, and data processing is carried out by controller, It is converted into corresponding silicate content, shown and print.This Instrumental Analysis time greatly shortens, and the response time is only 50 Second, analysis overall process is only one minute.
The present invention controls data processing system three parts to form by chemical reaction system, photoeletric measuring system, central authorities.
1. chemical reaction system: be made up of heater, sampling storage tank, drain valve, dosing pump, medicine-chest. this instrument adopts Heating method promote chemical reaction quickly carry out, water sample enter reaction utensil after, be automatically performed draining rinse, sampling after, successively Add medicament, complete the overall process of chemical reaction.
2. photoeletric measuring system: in the side of reactor equipped with highly sensitive photomultiplier tube, it will be chemiluminescent Light intensity is converted to the signal of telecommunication.
3. control data processing system: be made up of state-of-the-art controller and its special accessory circuit.In special-purpose software Under control. controller receives the finger of the signal that the sensors such as each water level, temperature, current, photoelectric current send and touch operation key Make signal, go to control each electromagnetic valve and related circuit according to preset program, and to all operations and monitoring content with liquid crystal side Formula shows, in each abnormal parameters alarm.When there is chemiluminescence, photoelectricity flow data is converted, with liquid crystal display and Printing type shows.
Specific embodiment 1
Referring to Fig. 1, a kind of online silicon dioxide analyser described in a preferred embodiment of the present invention, comprising: chemical reaction System, photoeletric measuring system, central authorities control data processing system;
Described chemical reaction system, including some medicine-chests for storing different agents, reaction tank 8, sampling storage tank 4, wherein, described medicine-chest at least includes the first medicine-chest 11 for storing molybdic acid ammonium reagent and for storing luminescence reagent the Two medicine-chests 12, each described medicine-chest is passed through the respective medicinal liquid tube for transfusion connecting and is connected with described reaction tank, each described medicinal liquid transfusion Dosing pump 9,10 is respectively equipped with pipe;It is provided with liquidometer 15, if described sampling storage tank passes through main line in described sampling storage tank The sampling intake line water sample system containing silicon dioxide for the connection, described sampling intake line is provided with the first electromagnetic valve 2 He Regulating valve 3;Described sampling storage tank is connected with described reaction tank by sample tube for transfusion, and described sample tube for transfusion is provided with second Electromagnetic valve 6;
Photoeletric measuring system is arranged on the side of described reaction tank, and described photoeletric measuring system includes will be anti-for described chemistry Light radiation that chemical reaction sends is converted to electricity to answer the water sample of the silicon dioxide in system, molybdic acid ammonium reagent, luminescence reagent to carry out Signal photomultiplier tube;
Data handling system, respectively with the first electromagnetic valve of chemical reaction system, the second electromagnetic valve, regulating valve, dosing pump And liquidometer is connected, according to predetermined programme-control first electromagnetic valve, the second electromagnetic valve, regulating valve, dosing pump, liquidometer Working condition.
The signal of telecommunication collection of illustrative plates for showing photoeletric measuring system output also including being connected with described data handling system LCDs.
Described medicinal liquid tube for transfusion is provided with heater, and described heater is arranged between medicine-chest and dosing pump, institute State heater to be connected with described data handling system, receive the control of described data handling system.
Described sample tube for transfusion is provided with heater, and described heater is connected with described data handling system, receives The control of described data handling system.
It is provided with magnetic stirring apparatuss in described reaction tank, described magnetic stirring apparatuss 7 are connected with described data handling system, receive The control of described data handling system.
Described medicine-chest also includes the 3rd medicine-chest 13 for storing standard reagent sample.
Described sampling storage tank and reaction tank are respectively connected with bleed valve 5, the bleed valve of described reaction tank and reaction tank Between be also associated with drainage pump 14, described bleed valve drainage pump is all connected with described data handling system, receive described data The control of processing system.
Specific embodiment 2
Dioxide-containing silica analysis method in a kind of water quality described in a preferred embodiment of the present invention, using above-mentioned concrete reality Apply the online silicon dioxide analyser described in example 1 to be analyzed using following steps, described step specifically includes:
Data handling system is according to the first electromagnetic valve on the sampling intake line described in predetermined programme-control and regulation The open degree of valve with adjust silicon dioxide water sample system water sample with predetermined flow rate input sample storage tank, when liquidometer measurement When water level in sampling storage tank reaches predetermined water level, stop inputting water sample in sampling storage tank;
Data handling system passes through to control the aperture of the second electromagnetic valve to input in reaction tank by the water sample sampled in storage tank, Data handling system controls the working condition of dosing pump so that molybdic acid ammonium reagent injection reaction tank, controls magnetic stirring apparatuses to carry out Stirring, sample water and molybdic acid ammonium reagent fully react generation molybdic acid Huang solution;
Luminescence reagent enters in reaction tank and carries out reaction generation chemiluminescence, described photoeletric measuring system with molybdic acid Huang solution Gather the light radiation that described chemiluminescence produces, and convert light radiation to electric signal output to data handling system;
The silicon ion that described data handling system carries out data processing according to the described signal of telecommunication, analysis measurement goes out in water sample contains Amount.
Also include step water sample, molybdic acid ammonium reagent and luminescence reagent being heated using heater.
Also include for the standard reagent in the 3rd medicine-chest and water sample carrying out reaction generation molybdic acid Huang solution, luminescence reagent and molybdenum Acid Huang solution carries out reaction and produces chemiluminescence, and described photoeletric measuring system gathers the light radiation that described chemiluminescence produces, and Convert light radiation to electric signal output to data handling system, according to this signal of telecommunication to described online silicon dioxide analyser The step calibrated.
The above is only the preferred embodiment of the present invention, is not limited to the present invention it is noted that for this skill For the those of ordinary skill in art field, on the premise of without departing from the technology of the present invention principle, can also make some improve and Modification, these improve and modification also should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of online silicon dioxide analyser is it is characterised in that include: chemical reaction system, photoeletric measuring system, central authorities' control Data processing system processed;
Described chemical reaction system, including some medicine-chests for storing different agents, reaction tank, sampling storage tank, wherein, Described medicine-chest at least includes the first medicine-chest for storing molybdic acid ammonium reagent and the second medicine-chest for storing luminescence reagent, respectively Described medicine-chest is passed through the respective medicinal liquid tube for transfusion connecting and is connected with described reaction tank, and each described medicinal liquid tube for transfusion is respectively equipped with Dosing pump;It is provided with liquidometer, if described sampling storage tank is contained by main line sampling intake line connection in described sampling storage tank There is the water sample system of silicon dioxide, described sampling intake line is provided with the first electromagnetic valve and regulating valve;Described sampling water storage Case is connected with described reaction tank by sample tube for transfusion, and described sample tube for transfusion is provided with the second electromagnetic valve;
Photoeletric measuring system is arranged on the side of described reaction tank, and described photoeletric measuring system is included described chemical reaction system The water sample of the silicon dioxide in system, molybdic acid ammonium reagent, luminescence reagent carry out the light radiation that chemical reaction sends and are converted to the signal of telecommunication Photomultiplier tube;
Data handling system, respectively with the first electromagnetic valve of chemical reaction system, the second electromagnetic valve, regulating valve, dosing pump and Liquidometer be connected, according to predetermined programme-control first electromagnetic valve, the second electromagnetic valve, regulating valve, dosing pump, liquidometer work State.
2. online silicon dioxide analyser according to claim 1 is it is characterised in that also include and described data processing system The LCDs of the signal of telecommunication collection of illustrative plates for showing photoeletric measuring system output that system connects.
3. online silicon dioxide analyser according to claim 1 is it is characterised in that described medicinal liquid tube for transfusion is provided with Heater, described heater is arranged between medicine-chest and dosing pump, described heater and described data handling system phase Even, receive the control of described data handling system.
4. online silicon dioxide analyser according to claim 1 it is characterised in that described sample tube for transfusion be provided with plus Thermal, described heater is connected with described data handling system, receives the control of described data handling system.
5. online silicon dioxide analyser according to claim 1 stirs it is characterised in that being provided with magnetic force in described reaction tank Mix device, described magnetic stirring apparatuss are connected with described data handling system, receive the control of described data handling system.
6. online silicon dioxide analyser according to claim 1 is it is characterised in that described medicine-chest is also included for storing 3rd medicine-chest of standard reagent sample.
7. online silicon dioxide analyser according to claim 1 is it is characterised in that described sampling storage tank and anti- Ying Chi is respectively connected with bleed valve, is also associated with drainage pump between the bleed valve of described reaction tank and reaction tank, described bleed valve Drainage pump is all connected with described data handling system, receives the control of described data handling system.
8. in a kind of water quality dioxide-containing silica analysis method it is characterised in that using claim 1 to 7 arbitrary described Line silicon dioxide analyser is analyzed using following steps, and described step specifically includes:
Data handling system is according to first electromagnetic valve on the sampling intake line described in predetermined programme-control and regulating valve Open degree with adjust silicon dioxide water sample system water sample with predetermined flow rate input sample storage tank, adopt when liquidometer measures When water level in sample storage tank reaches predetermined water level, stop inputting water sample in sampling storage tank;
Data handling system passes through to control the aperture of the second electromagnetic valve to input in reaction tank by the water sample sampled in storage tank, data Processing system controls the working condition of dosing pump so that molybdic acid ammonium reagent injection reaction tank, controls magnetic stirring apparatuses to be stirred Mix, sample water and molybdic acid ammonium reagent fully react generation molybdic acid Huang solution;
Luminescence reagent is entered and is carried out reaction generation chemiluminescence, described photoeletric measuring system collection in reaction tank with molybdic acid Huang solution The light radiation that described chemiluminescence produces, and convert light radiation to electric signal output to data handling system;
Described data handling system carries out data processing according to the described signal of telecommunication, analysis measurement goes out the silicon ion content in water sample.
9. in water quality according to claim 8, dioxide-containing silica analysis method heats it is characterised in that also including employing The step that device is heated to water sample, molybdic acid ammonium reagent and luminescence reagent.
10. in water quality according to claim 8 dioxide-containing silica analysis method it is characterised in that also including the 3rd Standard reagent in medicine-chest and water sample carry out reaction and generate molybdic acid Huang solution, and luminescence reagent carries out reaction with molybdic acid Huang solution and produces Chemiluminescence, described photoeletric measuring system gathers the light radiation that described chemiluminescence produces, and converts light radiation to the signal of telecommunication Export to data handling system, the step described online silicon dioxide analyser calibrated according to this signal of telecommunication.
CN201610952918.5A 2016-11-03 2016-11-03 Online silicon dioxide analyzer and method for analyzing content of silicon dioxide in water Pending CN106338508A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB793792A (en) * 1955-02-01 1958-04-23 Central Electricity Authority Improvements in or relating to the determination of impurities in water
CN1116303A (en) * 1994-08-31 1996-02-07 陈义新 Automatic measurer for content of silicic acid group
CN2229664Y (en) * 1994-08-31 1996-06-19 陈义新 Automatic testing and measuring device for silicic acid content
CN101063653A (en) * 2007-05-17 2007-10-31 叶宝荣 Improved SiO2 analytic instrument
CN101334358A (en) * 2008-08-05 2008-12-31 山东电力研究院 Turbine blade scale sample ingredient all-silicon content determination method
CN101545865A (en) * 2008-03-26 2009-09-30 大连华城电子有限公司 On-line fast monitoring instrument for silicate content of industrial water

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB793792A (en) * 1955-02-01 1958-04-23 Central Electricity Authority Improvements in or relating to the determination of impurities in water
CN1116303A (en) * 1994-08-31 1996-02-07 陈义新 Automatic measurer for content of silicic acid group
CN2229664Y (en) * 1994-08-31 1996-06-19 陈义新 Automatic testing and measuring device for silicic acid content
CN101063653A (en) * 2007-05-17 2007-10-31 叶宝荣 Improved SiO2 analytic instrument
CN101545865A (en) * 2008-03-26 2009-09-30 大连华城电子有限公司 On-line fast monitoring instrument for silicate content of industrial water
CN101334358A (en) * 2008-08-05 2008-12-31 山东电力研究院 Turbine blade scale sample ingredient all-silicon content determination method

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Application publication date: 20170118