CN105717108B - Chemical analysis liquid color CIE1976L*a*b*Colour space measuring method - Google Patents
Chemical analysis liquid color CIE1976L*a*b*Colour space measuring method Download PDFInfo
- Publication number
- CN105717108B CN105717108B CN201610090735.7A CN201610090735A CN105717108B CN 105717108 B CN105717108 B CN 105717108B CN 201610090735 A CN201610090735 A CN 201610090735A CN 105717108 B CN105717108 B CN 105717108B
- Authority
- CN
- China
- Prior art keywords
- color
- value
- chemical reaction
- chemical
- colour space
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 54
- 238000004458 analytical method Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 239000000126 substance Substances 0.000 title claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 73
- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 69
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 43
- 238000005259 measurement Methods 0.000 claims abstract description 36
- 230000008859 change Effects 0.000 claims abstract description 15
- 238000002835 absorbance Methods 0.000 claims description 30
- 230000003287 optical effect Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 230000003595 spectral effect Effects 0.000 claims description 10
- 238000001228 spectrum Methods 0.000 claims description 8
- 238000002834 transmittance Methods 0.000 claims description 7
- 244000174681 Michelia champaca Species 0.000 claims description 6
- 238000005286 illumination Methods 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 3
- 238000010606 normalization Methods 0.000 claims description 2
- 241000208340 Araliaceae Species 0.000 claims 1
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 238000007259 addition reaction Methods 0.000 claims 1
- 235000019646 color tone Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000012956 testing procedure Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 12
- 239000013307 optical fiber Substances 0.000 description 8
- 230000006870 function Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 230000000007 visual effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 239000012496 blank sample Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 210000000697 sensory organ Anatomy 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000004456 color vision Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000105 evaporative light scattering detection Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012088 reference solution Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Plasma & Fusion (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The present invention provides a kind of chemical analysis liquid color CIE 1976L*a*b*Colour space measuring method, belongs to field of measuring technique.Chemical analysis liquid color CIE 1976L*a*b*Colour space measuring method, which includes at least, is added two kinds and two kinds or more chemical reagent in the reaction vessel to generate chemical reaction, and causes color change after reacting, it is characterized in that, measuring the change procedure of chemical reaction liquid color using colour space method.Chemical analysis liquid color CIE 1976L provided by the invention*a*b*Colour space measuring method, realizes the digitized measurement of chemical reaction liquid color, and testing procedure is simple, it can be achieved that automation, the detection scale detection of mass.
Description
Technical field
The present invention relates to a kind of chemical analysis liquid color CIE1976L*a*b*Colour space measuring method, belongs to measuring technique
Field.
Background technique
In wet chemical analysis, the process measurement of solution reaction is extremely important element task in chemical analysis, is surveyed
Fixed accuracy determines the accurate of other testing results, is indispensable important link in wet chemical analysis.
Currently, being artificial mesh to the measurement and description of the color change for representing reaction process in wet chemical analysis both at home and abroad
It is the program according to visual method " visual impression → thinking judgement → language description " to the instant color change of reaction process depending on method
It describes in words, the adjectival meaning of color for representing reaction process understands by operator oneself.
Commonly used visual means are very big by environment, people's sense organ and psychological impact now, have biggish discreteness and with
Chance error is poor, has been unable to meet the needs quickly examined in chemistry.Visual method uses language using human eye as sensor, to color change
Speech description, major defect is:
1) human eye influences the color judgement for representing reaction process, causes result to occur inclined to the sensitivity of different colours
Difference；
2) all ages and classes, the physiological threshold difference of ethnic group are different with the understanding to language, different from understanding to color description；
3) information is transmitted, and the aspectant mode of teaching of master and apprentice can only be taken to determine that the sense organ of color understands；
4) reaction process can only be described with language, without digital information, can not transmission of quantity value, and trace difficult；
5) it is affected by environment it is big, large labor intensity, be also easy to produce visual fatigue；
6) testing procedure is cumbersome, cannot achieve the detection scale of automation, mass.
Summary of the invention
To overcome the technical problems existing in the prior art, goal of the invention of the invention is to provide a kind of chemical analysis liquid
Color CIE1976 (L*a*b*) colour space measuring method, measurement result digitlization, measurement accuracy is high, and testing procedure is simple, can
Realize the detection scale detection of automation, mass.
To realize that the goal of the invention, the present invention provide a kind of chemical analysis liquid color CIE1976 (L*a*b*) colour space
Measuring method is chemically reacted with generating including at least two kinds and two kinds or more chemical reagent are added in the reaction vessel, and reacted
After cause color change, it is characterized in that, using the colour space method measurement chemical reaction liquid color change procedure.
Preferably, after reaction reagent being added using colour space method measurement n-th, the brightness value of chemical reaction liquid is red green
Chromaticity index value champac chromaticity index value value of color tone value and calculating difference: It is respectively preset drop in formula
Brightness value, red green product index value, champac chromaticity index value, value of color, tone value and color difference when reaction end, it is molten when reacting
For one or more difference of liquid coloration value parameter in the range of setting, the volume of addition reagent at this time is exactly to react
The volume of consumed reaction reagent when terminal.
Preferably, reaction reagent is added using colour space method measurement n-th, chemical reaction liquid Including measuring process and calculate step, wherein measuring process includes:
With the extinction of chemical reaction liquid in reaction vessel within the scope of wavelength interval Δ λ measurement wavelength 380nm to wavelength 780nm
Angle valueWherein, λ1More than or equal to 380nm, λkLess than or equal to 780nm, λi=λ1+(i-1)Δλ；
Calculating step includes
S01: the chemical reaction liquid that light path is 10mm is calculated separately according to the absorbance value of chemical reaction liquid in reaction vessel
Absorbance value
S02: the spectrum for going out to calculate chemical reaction liquid respectively according to the absorbance value for the chemical reaction liquid that light path is 10mm is saturating
It penetrates than { τ (λ1) ..., τ (λi) ..., τ (λk), }:
S03: the colour stimulus function of the various criterion working flare of chemical reaction liquid is calculated separately according to spectral transmittance
S04: the tristimulus values X of the colour space of chemical reaction liquid is calculated separately out according to colour stimulus functionn、Yn、Zn；
S05: the colour space of chemical reaction liquid is calculated separately out according to the tristimulus values of chemical reaction liquid
S06: according to chemical reaction liquidValue,Value calculates the chroma of the chemical reaction liquid colour spaceValue and chemistry are anti-
Answer the hue angle of the liquid colour spaceValue.
Preferably, in step S01, the absorbance value for the chemical reaction liquid that light path is 10mm is calculated according to the following formula:In formula: L is that first light transmits piece along optical propagation direction reaction vessel and second light transmits piece
Between distance millimeter.
Preferably, in step S02, the spectral transmittance of chemical reaction liquid is calculated according to the following formula:
Preferably, in step S03, colour stimulus function is calculated according to the following formula:In formula,For working flare
Relative spectral power distributions factor.
Preferably, in step S04,With
The respectively color matching function of CIE1964 standard colorimetric observer or CIE1931 standard
The color matching function of coloration observer；κ0For normalization coefficient,
Preferably, in step S05, the CIE1976 (L of chemical reaction liquid is calculated separately out according to following equation*a*b*) color sky
Between
With
X0For the standard psychrometric colour specification in standard colorimetric observer；Y0For the psychrometric colour specification in standard colorimetric observer；Z0For
Psychrometric colour specification in standard colorimetric observer.
Preferably, in step S06, the CIE1976 (L of chemical reaction liquid is calculated separately according to following equation*a*b*) colour space
Cn *And Hn *:
Preferably, Δ λ≤20nm.
Compared with prior art, chemical analysis liquid color CIE1976 (L provided by the invention*a*b*) colour space measurement side
Method, realizes the digitized measurement of chemical reaction liquid color, and testing procedure is simple, it can be achieved that automation, the detection of mass rule
Mould detection.
Detailed description of the invention
Fig. 1 is chemical analysis liquid color CIE1976 (L provided by the invention*a*b*) measurement system composition block diagram；
Fig. 2 is chemical analysis liquid color CIE1976 (L provided by the invention*a*b*) measurement system index path.
Specific embodiment
The present invention will be described in detail combined with specific embodiments below.
Fig. 1 is the composition block diagram of the measurement system of chemical reaction liquid color provided by the invention.As shown in Figure 1, of the invention
The measurement system of the chemical reaction liquid color of offer includes constant light source 2, reaction unit 1, absorbance measuring device 5 and control system
System 6, wherein the reaction unit includes reaction vessel 1, reagent adding apparatus and blender 7, and reagent adding apparatus includes reagent
Container 9 and reagent dosage control pump 8, the reaction vessel 1 includes the first optical lens being arranged on two opposite walls
Group 3 and the second optical lens group 4.Constant light source 2 for providing measurement illumination spectra, provided spectrum 380nm~
Within the scope of the visible light continuous spectrum of 780nm.The preferred tungsten light source of the present invention is full spectrum light source as constant light source.The
One optical lens group 3 includes that collimation lens 10 and parallel rays transmit piece 11, and the light of light source output is successively through fibre-optical splice 14, light
Fibre 15 sends collimation lens 10 to, collimated steady lens 10 become directional light and vertical irradiation to setting at reaction vessel first
The light of all vertical light going direction transmits piece 11 in any direction.The reacted container of light through parallel light transmission piece 11
Reaction solution be transmitted to be arranged in reaction vessel second in any direction all vertical light going direction light transmission piece 12,
Second light transmission piece and first light transmission piece are parallel and symmetrical；It is collimated through the light of parallel rays transmission piece 12
13 and after through optical fiber 16, fibre-optical splice 17 send spectrometer to.The distance of two light transmission piece 1.0mm~100.0mm it
Between.
Fig. 2 is the index path of the measurement system of chemical reaction liquid color provided by the invention.As shown in Fig. 2, chemical reaction
The optical path of the measurement system of liquid color uses spectrum-type optical path, and in Fig. 2, light original 2, optical fiber 15, collimation lens 10 and directional light are saturating
It penetrates piece 11 and forms input path.Parallel light transmission piece 12, collimation lens 13 and light optical fiber 16 form emitting light path, full spectrum light source
2 signal lights are imported by optical fiber interface 14, are irradiated after 10 standard of spherical mirror collimation lens and by reaction vessel first any
The light transmission piece 11 of all vertical light going direction enters in solution on direction, after being absorbed part optical signals in the solution
After signal light is transmitted through solution, through second in any direction all vertical light going direction light transmission piece light
It transmits piece 12 to project, be imported in spectrometer using after spherical mirror collimation lens 13 by optical fiber 16 and optical fiber interface 17.Spectrometer
Detector 21, the light imported by optical fiber interface 17 are displayed including entrance slit 18, collimating mirror 19, grating 20, focus lamp 22 and CCD
Successively entrance slit 18 is irradiated to the collimation of collimating mirror 19 and obtains collimated signal number, and then grating 20 is the collimated signal optical dispersion,
It is projected on one-dimensional linear CCD array detector detector array 21 via the defocused signal light of the poly- mirror 22 of spherical mirror, thus
Electric signal is converted optical signals to be supplied to control system, so detect pre-set one group of wavelength 360nm~
The absorbance of 800nm, wavelength interval≤20nm wavelength.
Absorbance measuring device 5 is for will be converted to absorbance by the signal light after solution and be supplied to control system.
Reaction unit 1 includes: reaction vessel 1, reagent adding apparatus 8 and blender 7, wherein reaction vessel is to be tested anti-for holding
Answer liquid.Reagent adding apparatus includes reagent) container 9 and reagent dosage control pump 8, further include reagent be added control triple valve,
Wherein, the first port of triple valve by pipeline connection in reaction vessel 1, second port by pipeline connection in reagent container 9,
Control pump 8 is added in reagent by pipeline connection in third port.Reagent adding apparatus is used for providing reagent in reaction vessel 1,
Amount of reagent is added control pump by reagent and determines；Controller system is according to the color change information of the offer of absorbance measuring device 5
Control the working condition of reagent adding apparatus, blender 7.
Controller system includes at least CPU, RAM, ROM, display, input equipment and output equipment, and wherein ROM is for depositing
Chemical reaction liquid color measurement procedure is stored up, RAM is a working region of CPU, and display is for showing result；Input equipment is used
It is instructed in input；Output equipment is for exporting result.The chemical reaction liquid colour measurement is by absorbance signal according to pre-
If condition and calculation formula are scaled CIE1976 (L*a*b*) coloration value parameter, and be compared according to the parameter with preset value,
The program that reagent adding apparatus, agitating device are controlled according to comparison result.
The light source of the measurement system of chemical reaction liquid color, as constant light source, measures the light warp of light source using tungsten light source
It crosses and reaches setting in the first light of reaction vessel transmission piece 11 through optical fiber, collimation lens 10, then enter the liquid in reaction vessel
Body, partial illumination light is selectively absorbed by liquid, and non-absorbent irradiation light is transmitted through the second light of reaction vessel
Piece 12 is transmitted, absorbance value is finally measured by absorbance measuring device.Wavelength 380nm~780nm, wavelength interval 1nm~
After 20nm, the preferably light of 20nm pass through reaction vessel, one group of wavelength 380nm~780nm, wave are obtained in absorbance measuring device
The corresponding absorbance data of visible light of long interval 1nm~20nm.
The measuring method of chemical reaction liquid color provided by the invention is for corresponding to color change in wet chemical analysis
Reaction process detection, be also applied for the chemical assay indicated using color change as reaction process.Before determination data, water is used
Reaction vessel is full of, bubble is excluded, light beam is adjusted to parallel rays transmission piece center, carries out colour assessment apparatus
Blank correction.Same reaction container with blank correction is placed in the optical path of colour measurement system.By reagent adding apparatus
One or more of reaction reagents are added, wherein the addition speed of reagent is maintained at 0.1mL/min~10mL/min.Blender make to
Test reaction liquid and reaction reagent quickly mix, and the variation of absorbance value caused by the color change of mixed reaction solution is by inhaling
Photometric measuring apparatus measurement, and control system is supplied to after measurement result is converted to power information.Control system is according to one group of wave
Long absorbance value A(λ), calculate CIELAB colorimetric parameter；Control system is compared according to the parameter of calculating with preset parameter
Compared with if having reached preset reaction end coloration, reaction process terminates, and reagent titration is otherwise continuously added, until reaching
Parameter preset terminates titration process.
Before measuring using chemical reaction liquid colour measurement method provided by the invention, use water will as blank reference solution
Reaction vessel is full of, and excludes bubble, and light beam is adjusted to parallel glass piece center, carries out the blank of absorbance measuring device
Correction.It will be then placed in reaction vessel in absorbance measuring device, addition is made of the reagent of the W of known quality or concentration
Sample solution, and be continuously added and reacted with the reagent that quality or concentration are M, color change caused by reacting utilizes
The variation of colour space method measurement chemical reaction liquid color.Using colour space method measurement n-th, (n is the nature more than or equal to 1
Number) reagent is added after, the brightness value red green product index value champac chromaticity index value value of color tone value of chemical reaction liquid and calculating difference: It is respectively preset anti-in formula
Brightness value, red green product index value, champac chromaticity index value, value of color, tone value and the color difference when terminal are answered, when one of them
Or multiple differences are in the range of setting, such as -5≤Δ L*≤ 5, -10≤Δ a*≤ 10, -10≤Δ b*≤ 10, -1≤Δ C*
≤ 1, the volume or quality of the volume or quality of reaction reagent at this time consumed reagent when being exactly reaction end.Then
With same reaction device, it is filled with the blank sample of equivalent in reaction unit, carries out drop reaction, weight using the reagent of same concentration
Consumed volume or quality V when blank sample are reacted in the multiple above process, measurement0；
Reaction reagent is added using colour space method measurement n-th, after, chemical reaction liquid
Including measuring process and calculate step, wherein measuring process includes:
With the absorbance value of chemical reaction liquid in wavelength interval Δ λ measurement wavelength 380 to reaction vessel in 780 range of wavelengthWherein, λ1More than or equal to 380, λkLess than or equal to 780, λi=λ1+ (i-1) Δ λ, the present invention in
It is preferred that Δ λ≤20nm；
Calculating step includes
S01: the chemical reaction liquid that light path is 10mm is calculated separately according to the absorbance value of chemical reaction liquid in reaction vessel
Absorbance valueIn the step, the chemical reaction liquid that light path is 10mm is calculated according to the following formula
Absorbance value:In formula: L is the distance between optical propagation direction reaction vessel；
S02: the spectrum for going out to calculate chemical reaction liquid respectively according to the absorbance value for the chemical reaction liquid that light path is 10mm is saturating
It penetrates than { τ (λ1) ..., τ (λi) ..., τ (λk), in the step, the spectral transmittance of chemical reaction liquid is calculated according to the following formula:
S03: the colour stimulus function of chemical reaction liquid is calculated separately according to spectral transmittanceIn the step, colour stimulus function is calculated according to the following formula:In formula,For
The relative spectral power distributions factor of working flare；
S04: the tristimulus values X of chemical reaction liquid is calculated separately out according to colour stimulus functionn、Yn、Zn, in the step,With
In formula, the respectively color matching function of CIE1964 standard colorimetric observer；κ0For normalizing
Change coefficient,
S05: the CIE1976 (L of chemical reaction liquid is calculated separately out according to the tristimulus values of chemical reaction liquid*a*b*) color sky
BetweenIn the step, the CIE1976 (L of chemical reaction liquid is calculated separately out according to following equation*a*b*) color sky
Between
With
In formula, X0Standard psychrometric colour specification in standard colorimetric observer, the standard in 1964 standard colorimetric observer of CIE
Psychrometric colour specification is the mark in 111.14,94.81,96.72,95.80,94.42 and 97.29 or CIE, 1931 standard colorimetric observer
Quasi- psychrometric colour specification is 109.85,95.04,96.42,95.68,94.97 and 98.07；Y0For the color thorn in standard colorimetric observer
Swash value, standard psychrometric colour specification in 1964 standard colorimetric observer of CIE 100.00,100.00,100.00,1000.00,
Standard psychrometric colour specification 100.00 in 100.00 and 100.00 or CIE, 1931 standard colorimetric observer, 100.00,100.00,
1000.00,100.00 and 100.00；Z0For the psychrometric colour specification in standard colorimetric observer, 1964 standard colorimetric observer of CIE
In standard psychrometric colour specification be 35.20,107.32,81.43,90.93,120.64 and 116.14 or CIE, 1931 standard colorimetric see
Standard psychrometric colour specification 35.58,108.88,82.51,92.14,122.61 and 118.22 in the person of examining.CIE1976(L*a*b*) color
Space-wise is CIE (Comnission Internationale de I ' Eclairage, International Commission on Illumination) in 1976
The international method recommended, describes color, CIE1976 (L with set of number*a*b*) colour space method the advantages of be its parameter
It is only related with light source and object property.
WhenWhen (i.e. 0.008856451),
WhenWhen (i.e. 0.008856451),
WhenWhen (i.e. 0.008856451),
WhenWhen (i.e. 0.008856451),
WhenWhen (i.e. 0.008856451),
WhenWhen (i.e. 0.008856451),
S06: according to chemical reaction liquidIt calculatesValue andIn the step, calculated separately according to following equationWith
Compared with prior art, the measuring method of chemical reaction liquid color provided by the invention has the advantage that realization
" 3-dimensional digital coordinate " value of chemical reaction liquid color signal, replaces that traditional " visual impression → thinking is sentenced to color with numerical value
The representation method of disconnected → language description ", its advantage is that；
1) it realizes measurement, indicate, the digitlization of transmitting；
2) recovery of chemical reaction liquid color characteristic may be implemented in the coordinate value of colour space method；
3) strange land, long-range color characteristic magnitude transmitting are realized, communication barriers are eliminated；
4) difference of the experimenter because of colour vision is avoided, analysis precision is improved；
5) digitized magnitude tracing is realized；
6) cooperate sample automatic sampling apparatus, it can be achieved that full-automatic, mass detection work.
The above is only that embodiments of the present invention are described in detail, it is noted that for the art
For those of ordinary skill, without departing from the technical principles of the invention, several improvements and modifications can also be made, these
Improvement and modification also should be regarded as the protection scope of invention.
Claims (10)
1. a kind of chemical analysis liquid color CIE1976L*a*b*Colour space measuring method, including at least being added in the reaction vessel
Two or more chemical reagent causes color change after reacting to generate chemical reaction, it is characterized in that, utilizing color
The change procedure of space law and measuring system measurement chemical reaction liquid color, the measurement system include constant light source, reaction dress
It sets, absorbance measuring device and control system, wherein the constant light source is for providing measurement illumination spectra, the reaction
Device includes reaction vessel, reagent adding apparatus and blender, and the absorbance measuring device by the reaction for that will be filled
Signal light after the solution set is converted to absorbance and is supplied to the control system, and the control system is according to the ginseng of calculating
Number is compared with preset parameter and controls the reagent adding apparatus and blender in reaction unit according to comparison result, if
Preset reaction end coloration is reached, then reaction process terminates, and reagent reaction is otherwise continuously added, until reaching parameter preset
Process that reaction was completed, the parameter include the brightness value L of chemical reaction liquid, red green product index value a, champac chromaticity index value b,
Value of color C, tone value H and color difference E.
2. chemical analysis liquid color CIE1976L according to claim 1*a*b*Colour space measuring method, feature exist
In, after reaction reagent is added using colour space method measurement n-th, the brightness value of chemical reaction liquidRed green product index valueChampac chromaticity index valueValue of colorTone valueAnd calculating difference: In formula With Δ E*Respectively preset reaction end when brightness value, red green product index value, champac
Chromaticity index value, value of color, tone value and color difference, when one or more difference of reaction solution coloration value parameter is being set
When fixed range, the volume of the volume of the reagent of addition at this time consumed reaction reagent when being exactly reaction end.
3. chemical analysis liquid color CIE1976L according to claim 2*a*b*Colour space measuring method, feature exist
In utilizing CIE1976 (L*a*b*) method measurement n-th addition reaction reagent chemical reaction liquidIncluding measuring process and calculate step, wherein measuring process includes:
With the absorbance value of chemical reaction liquid in reaction vessel within the scope of wavelength interval Δ λ measurement wavelength 380nm to wavelength 780nmWherein, 780nm >=λ1>=380nm, 780nm >=λk>=380nm, λi=λ1+(i-1)Δ
λ；
Calculating step includes:
S01: the suction for the chemical reaction liquid that light path is 10mm is calculated separately according to the absorbance value of chemical reaction liquid in reaction vessel
Shading value
S02: the spectral transmittance of chemical reaction liquid is calculated separately out according to the absorbance value for the chemical reaction liquid that light path is 10mm
{τ(λ1),…,τ(λi),…,τ(λk) }:
S03: the colour stimulus function of the various criterion working flare of chemical reaction liquid is calculated separately according to spectral transmittance
S04: the tristimulus values X of the colour space of chemical reaction liquid is calculated separately out according to colour stimulus functionn、Yn、Zn；
S05: the colour space of chemical reaction liquid is calculated separately out according to the tristimulus values of chemical reaction liquid
S06: according to chemical reaction liquidValue,Value calculates the chroma of the chemical reaction liquid colour spaceValue and chemical reaction liquid
Hue angleValue.
4. chemical analysis liquid color CIE1976L according to claim 3*a*b*Colour space measuring method, feature exist
In, in step S01, the absorbance value for the chemical reaction liquid that calculating light path is 10mm according to the following formula:
In formula: L is that first light transmits piece along optical propagation direction reaction vessel and second light transmits the milli of distance between piece
Rice number.
5. chemical analysis liquid color CIE1976L according to claim 4*a*b*Colour space measuring method, feature exist
In, in step S02, according to the following formula calculate chemical reaction liquid spectral transmittance:
6. chemical analysis liquid color CIE1976L according to claim 5*a*b*Colour space measuring method, feature exist
In calculating colour stimulus function according to the following formula in step S03:In formula,For working flare
Relative spectral power distributions factor.
7. chemical analysis liquid color CIE1976L according to claim 6*a*b*Colour space measuring method, feature exist
In, in step S04, With Respectively CIE1964 standard colorimetric is observed
The color matching function of person or the color matching function of CIE1931 standard colorimetric observer；κ0For normalization coefficient,
8. chemical analysis liquid color CIE1976L according to claim 7*a*b*Colour space measuring method, feature exist
In calculating separately out the CIE1976L of chemical reaction liquid according to following equation in step S05*a*b*The colour space
With
X0For the standard psychrometric colour specification in standard colorimetric observer；Y0For the psychrometric colour specification in standard colorimetric observer；Z0For standard
Psychrometric colour specification in coloration observer.
9. chemical analysis liquid color CIE1976L according to claim 8*a*b*Colour space measuring method, feature exist
In calculating separately the CIE1976L of chemical reaction liquid according to following equation in step S06*a*b*The C of the colour spacen *And Hn *:
10. -9 any chemical analysis liquid color CIE1976L according to claim 1*a*b*Colour space measuring method,
It is characterized in that, Δ λ≤20nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090735.7A CN105717108B (en) | 2016-02-07 | 2016-02-07 | Chemical analysis liquid color CIE1976L*a*b*Colour space measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610090735.7A CN105717108B (en) | 2016-02-07 | 2016-02-07 | Chemical analysis liquid color CIE1976L*a*b*Colour space measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105717108A CN105717108A (en) | 2016-06-29 |
| CN105717108B true CN105717108B (en) | 2019-11-19 |
Family
ID=56155943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610090735.7A Active CN105717108B (en) | 2016-02-07 | 2016-02-07 | Chemical analysis liquid color CIE1976L*a*b*Colour space measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105717108B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752322A (en) * | 2017-11-01 | 2019-05-14 | 李文杰 | A kind of method of chromatism measurement method detection sclerotin porcelain glaze resistance to chemical corrosion |
| CN108918756A (en) * | 2018-07-25 | 2018-11-30 | 王飞 | Chemically react the CIELAB color space C* value and amount of substance calculation method of spectrum |
| CN108918759A (en) * | 2018-07-27 | 2018-11-30 | 王飞 | Chemically react the b* value and substance magnitude relation calculation method of the CIELAB color space of spectrum |
| CN108918757A (en) * | 2018-07-27 | 2018-11-30 | 王飞 | Chemically react the L* value and substance magnitude relation calculation method of spectrum CIELAB color space |
| CN108918760A (en) * | 2018-07-27 | 2018-11-30 | 王飞 | Chemically react the a* value and substance magnitude relation calculation method of the CIELAB color space of spectrum |
| CN108918758A (en) * | 2018-07-27 | 2018-11-30 | 王飞 | Chemically react the CIELAB color space color difference △ E and amount of substance calculation method of spectrum |
| CN113092396B (en) * | 2021-04-01 | 2023-03-14 | 国网陕西省电力公司电力科学研究院 | Gas detection tube determination method and device based on laser method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2844906Y (en) * | 2003-10-31 | 2006-12-06 | 泰国国家科技发展署 | Color recorder for measuring concentration of element |
| US7652755B2 (en) * | 2007-02-23 | 2010-01-26 | Yan Liu | Apparatus and method for color measurement and color grading of diamonds, gemstones and the like |
| CN103293152A (en) * | 2013-06-25 | 2013-09-11 | 长沙理工大学 | A method and an apparatus for end point detection in titration analysis |
| CN104655572B (en) * | 2015-01-09 | 2017-07-21 | 上海绿帝环保科技有限公司 | Solution chromogenic reaction quantitative analysis detection means |
-
2016
- 2016-02-07 CN CN201610090735.7A patent/CN105717108B/en active Active
Non-Patent Citations (2)
| Title |
|---|
| CIE 1976（L*a*b*）色空间方法测定葡萄酒颜色的研究;王飞 等;《中外葡萄与葡萄酒》;20150715(第04期);第6-11页 * |
| 色度学原理在确定化学反应终点中的应用;王洋 等;《科技创新导报》;20121231(第02期);第127-128页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105717108A (en) | 2016-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105717108B (en) | Chemical analysis liquid color CIE1976L*a*b*Colour space measuring method | |
| CN105738357B (en) | The CIE1976L that chemical analysis is prepared with sodium hydroxide solution*a*b*Colour space method | |
| Korifi et al. | CIEL⁎ a⁎ b⁎ color space predictive models for colorimetry devices–Analysisof perfume quality | |
| US20100141929A1 (en) | Apparatus and method for color measurement and color grading of diamonds, gemstones, and the like | |
| CN107421948A (en) | The method of detection solution colour change based on the CIELab colour spaces | |
| CN108051434A (en) | A kind of prepare liquid concentration quantitative detection method based on color identification | |
| CN106645134A (en) | Color measurement instrument for chemical analysis | |
| CN106840404B (en) | A kind of grading automatical measuring method of diamond color | |
| CN109323999A (en) | A kind of spectrophotometric detecting method based on image values analysis | |
| CN109975288A (en) | On-line checking instrument and its control method based on RGB three primary colours visual sensor | |
| KR101706702B1 (en) | Method for glucose concentration detection | |
| CN106679811A (en) | Automatic grading measurement method of diamond color | |
| CN106018334B (en) | The method that binary mixture is measured using near infrared spectrum direct quantitative | |
| CN108896546A (en) | A kind of grading automatical measuring device of diamond color | |
| CN108918760A (en) | Chemically react the a* value and substance magnitude relation calculation method of the CIELAB color space of spectrum | |
| CN105899940A (en) | Systems and methods for statistical measurement control of spectrophotometric data | |
| RU2644439C2 (en) | Method and device for quality control of product | |
| DE4420260A1 (en) | Determining colour components and colour saturation | |
| Winch et al. | Measurement, representation and specification of colour and colour rendering properties of light sources | |
| CN206505018U (en) | Chemical analysis color measurement instrument | |
| Lübbers | Spectrophotometric examination of tissue oxygenation | |
| JP2001141648A (en) | Method and apparatus for estimation of measured value by absorbance measurement | |
| US3954336A (en) | Chemical analysis method and apparatus | |
| CN205748642U (en) | A kind of color measuring device | |
| CN206095955U (en) | Titration end point judges device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191017 Address after: Six No. 066004 mountain road, Qinhuangdao Development Zone, Hebei, 1 Applicant after: Wang Fei Applicant after: Qinhuangdao water bear Technology Co., Ltd. Address before: Six No. 066004 mountain road, Qinhuangdao Development Zone, Hebei, 1 Applicant before: Wang Fei |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |