CN101971005A - Ultraviolet absorbance measuring instrument - Google Patents
Ultraviolet absorbance measuring instrument Download PDFInfo
- Publication number
- CN101971005A CN101971005A CN2008801280055A CN200880128005A CN101971005A CN 101971005 A CN101971005 A CN 101971005A CN 2008801280055 A CN2008801280055 A CN 2008801280055A CN 200880128005 A CN200880128005 A CN 200880128005A CN 101971005 A CN101971005 A CN 101971005A
- Authority
- CN
- China
- Prior art keywords
- flow cell
- sample water
- pure water
- control part
- ultraviolet absorbance
- 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.)
- Granted
Links
- 238000002835 absorbance Methods 0.000 title claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 106
- 238000004140 cleaning Methods 0.000 claims abstract description 32
- 230000005855 radiation Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 abstract 7
- 229910021641 deionized water Inorganic materials 0.000 abstract 7
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 abstract 5
- 238000011481 absorbance measurement Methods 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 60
- 239000000523 sample Substances 0.000 description 39
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000004457 water analysis Methods 0.000 description 1
Images
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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/03—Cuvette constructions
- G01N21/05—Flow-through cuvettes
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/18—Water
- G01N33/1893—Water using flow cells
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
- G01N2021/152—Scraping; Brushing; Moving band
Abstract
A sample water/deionized water supply section (14) is connected to an inlet (12) of a flow cell (2). The sample water/deionized water supply section (14) can supply either sample water or deionized water to the inlet (12) side, as well as stop supply of both water through switching of a flow channel switch-over valve (16). The sample water/deionized water supply section (14) is controlled by a control section (32). At the end of an ultraviolet absorbance measurement, the control section (32) performs a control to clean the flow cell (2) by means of a cleaning mechanism (30) and to supply the deionized water from the sample water/deionized water supply section (14) for filling the flow cell (2) with the deionized water.
Description
Technical field
The present invention relates to a kind of ultraviolet absorbance determinator of measuring the organic fouling product quality (concentration) that exists in the sample water.
Background technology
For example, in order to carry out the water analysis of rivers and creeks water or draining, often can use the ultraviolet absorbance determinator that utilizes ultraviolet absorbance to measure the organic fouling product quality in the sample water.The ultraviolet absorbance determinator by to making logical flow cell (flow cell) irradiation ultraviolet radiation of sample current and measuring its absorbance, comes the organism that is comprised in the sample water is carried out quantitatively.
In the ultraviolet absorbance determinator, because will draw rivers and creeks water or draining etc. as sample water and it is circulated in flow cell, can make the light transmission variation so on the wall of flow cell, adhere to the words of organism or floating material, influence ultraviolet absorbance and measure.Therefore, suggestion is provided with the cleaning mechanism of dirt in the removal flow cells such as using rain brush (wiper) (for example, with reference to patent documentation 1 in device.)。
Patent documentation 1: the special fair 6-58323 communique of Japan
But, ultraviolet absorbance determinator in the past with usual in flow cell sustainable supply sample water serve as to measure prerequisite, do not imagine and stopped after flow cell is supplied with sample water, to begin again to measure such intermittence mensuration for the time being.Therefore, in device in the past, even after flow cell is supplied with sample water, also still measure same as before stopping.
Having stopped under the situation that sample water supplies with, because the sample water in the flow cell does not circulate, thus on the wall of flow cell, just adhere to dirt easily by the sample water generates, even if under this state, also can't remove sometimes by cleaning through its dirt after a while.In addition, thus if stop the supply of sample water and discharge whole sample water flow cells being in sky pond state, sometimes attached to also removing after the dirt drying on the wall of flow cell.
Summary of the invention
Therefore, the objective of the invention is to, even if provide a kind of interruption ultraviolet absorbance to measure, the wall of flow cell also can not produce the ultraviolet absorbance determinator of dirt owing to sample water in the process of this interruption.
Ultraviolet absorbance determinator of the present invention possesses: flow cell; Sample water pure water supply unit, it is connected with flow cell, can switch and supply with any one party of sample water and pure water to the flow cell selectivity; The draining control part, its control is from the draining of flow cell; Light source, it is used for the flow cell irradiation ultraviolet radiation; Measure calculating part, it comprises the photodetector that the ultraviolet ray that has seen through described flow cell is detected, and measures the ultraviolet absorbance of sample water based on the light detection limit of photodetector; Cleaning mechanism, it is to cleaning in the flow cell; Control part, it comprises when measuring circulates sample water in flow cell, measure the supply that stops sample water after stopping, clean flow cell and will fill with the action of pure water in the flow cell with cleaning mechanism, and the action of control sample water pure water supply unit, draining control part, light source, mensuration calculating part and cleaning mechanism.
In ultraviolet absorbance determinator of the present invention, preferred control part carries out the action of cleaning in the flow cell when measuring beginning.Do like that, fill the become dirt of the flow cell wall that drops easily of pure water and when measuring beginning, can remove, can carry out more accurately ultraviolet absorbance and measure owing to flow cell in measuring interrupt procedure.
Can also possess the minute configuration part, it can be imported the information relevant with minute and set the time relevant with mensuration, in this case, control part is controlled the action of sample water pure water supply unit, draining control part, light source, mensuration calculating part and cleaning mechanism based on the setting-up time of setting in the minute configuration part.Here " with measuring the relevant time " mentioned refers to the start time measured or termination time etc.If the action of being undertaken by control part control is based on these setting-up times and carries out, then measure personnel only preestablish each action in the minute configuration part time, device will move automatically, so the mensuration personnel are measuring on-the-spot each indication of measuring beginning, stopping, begin etc. of sending to device that do not need.
(invention effect)
Because ultraviolet absorbance determinator of the present invention possesses flow cell, sample water pure water supply unit, draining control part, light source, mensuration calculating part, cleaning mechanism and control part, measure the supply that has stopped sample water after stopping, flow cell cleans and fills with pure water in flow cell with cleaning mechanism, so flow cell can not produce dirt because of sample water in measuring interrupt procedure, can interrupt measuring, the mensuration after beginning again also can realize high precision.
Description of drawings
Fig. 1 is the block diagram that schematically shows an embodiment of ultraviolet absorbance determinator.
Fig. 2 is the process flow diagram of action of the ultraviolet absorbance determinator of this embodiment of expression.
Fig. 3 is the signal pie graph of an example of the cleaning mechanism of this embodiment of expression.
Symbol description:
The 2-flow cell;
The 4-light source;
6-flash ranging bonding part;
The 8-photodetector;
The 10-calculating part;
12-flow cell inlet;
14-sample water pure water supply unit;
The 16-flow channel switching valve;
18-sample water is supplied with runner;
The 20-pure water is supplied with runner;
The 22-active carbon filter;
24-pure water case;
The 26-water pump;
28-draining control part;
The 30-cleaning mechanism;
The 30a-rain brush;
The 30b-motor;
30c-travel mechanism;
The 32-control part;
The 34-operation inputting part;
36-minute configuration part.
Embodiment
Fig. 1 is the block diagram that schematically shows an embodiment of ultraviolet absorbance determinator.
For making flow cell 2 carry out the ultraviolet ray irradiation to circulation sample water, ultraviolet source 4 is configured in the side of flow cell 2, dispose flash ranging bonding part 6 across flow cell 2 at the opposition side of light source 4, this flash ranging bonding part 6 is by detecting the ultraviolet photodetector 8 by flow cell 2 and forming based on the detection limit of photodetector 8 is tried to achieve the ultraviolet absorbance of the sample that circulates flow cell 2 in calculating part 10.
The export mixes of flow cell 2 is: carry out switch by the draining control part of being made up of switch valve 28.
In addition, be provided with the cleaning mechanism 30 that is used to clean in the flow cell 2.For example as shown in Figure 3, the 30c of travel mechanism that cleaning mechanism 30 possesses rain brush 30a and by motor 30b driving rain brush 30a moved, by allowing rain brush 30a contact and to move up at upper and lower with the wall of flow cell 2, thereby physical property is washed the dirt of flow cell 2 walls off.As the 30c of travel mechanism, possess by the threaded rod of motor 30b rotation and the drive division that screws togather and on the direction of principal axis of threaded rod, move with threaded rod by the rotation of threaded rod.The base end part of rain brush 30a is fixed in the drive division that moves on threaded rod.Cleaning mechanism 30 also can possess function from cleaning fluid to flow cell 2 that supply with.
Each action of light source 4, flash ranging bonding part 6, sample water pure water supply unit 14, draining control part 28 and cleaning mechanism 30 is controlled by control part 32.Control part 32 constitutes: except that controlling based on the indication of importing via operation inputting part 34 from the personnel of mensuration, also in possessing the minute configuration part 36 of timer, set with the situation of measuring the relevant time under, when to carrying out specific control during this setting-up time.The so-called time relevant with mensuration for example is to measure start time, mensuration termination time.
Fig. 2 is the process flow diagram of an example of action of the ultraviolet absorbance determinator of this embodiment of expression.Based on Fig. 2 the action of the device of this embodiment is described.
Mensuration personnel can preestablish in minute configuration part 36 via operation inputting part 34 and indicate control parts 32 to measure such time (step S1) relevant with mensuration of beginning or mensuration start time or mensuration termination time.Setting under the situation of measuring the start time, measuring the start time and then send signals to control part 32 in minute configuration part 36 if arrive, control part 32 receives these signals and measures the control (step S2) of action.Do not setting under the situation of measuring the start time, measure the indication that begins by the mensuration personnel via operation inputting part 34 inputs, thereby control part is being measured the control (step S3) of action.And by the action of step S12 described later, this is measured in the preceding flow cell 2 constantly of beginning, presents the state of filling with pure water.
Arrived the mensuration start time (step S2) or be transfused to the indication (step S3) that begins from the mensuration of measuring personnel, then filled with in the flow cell 2 of pure water and cleaned (step S4) by 30 pairs of quilts of cleaning mechanism.Afterwards, the outlet of open flow cell 2 is discharged pure water from flow cell 2, supplies with sample water (step S6) by sample water pure water feed mechanism 14, begins to measure ultraviolet absorbance (step S7).If measure beginning, then from light source 4 to flow cell 2 irradiation ultraviolet radiations, the ultraviolet ray of having passed through flow cell 2 is subjected to light with photodetector 8.Photodetector 8 will send to calculating part 10 by suitable signal with being subjected to ultraviolet ray amount behind the light, and calculating part 10 is calculated the ultraviolet absorbance of the sample water in the flow cell 2 based on this signal.
Set in minute configuration part 36 under the situation of mensuration termination time, measure and just proceed to till this time, when arriving minute, minute configuration part 36 sends signal to control part 32, control part 32 receives these signals and the action control that is used to stop measuring (step S8, S9).Do not set under the situation of measuring the termination time in minute configuration part 36, mensuration proceeds to the mensuration personnel and imports till the indication of measuring termination, import by the mensuration personnel when measure stopping indication, control part 32 measure termination action control (step S8, S10).
Measure the termination time or imported the indication of measuring termination if arrive, interrupt ultraviolet absorbance by control part 32 and measure by the mensuration personnel.Control part 32 is all discharged the sample water in the flow cell 2.Afterwards, supply with pure water, carry out cleaning (step S11) in the flow cell 2 by cleaning mechanism 30, and the outlet of closing flow cell 2 by draining control part 28 stops water pump 26 after flow cell 2 is filled with pure water (step S12) by sample water pure water supply unit 14.Afterwards, in measuring interrupt procedure, keeping the state of filling pure water in the flow cell 2 always.
And, after ultraviolet absorbance is measured and is stopped, after having filled the flow cell 2 of pure water, in case will can also once more flow cell 2 be filled with pure water after this pure water discharge with the pure water cleaning.Do like that,, measure the wall that adheres again to flow cell 2 in the interrupt procedure at ultraviolet absorbance so can prevent these dirts because before pure water is supplied with, just be discharged to outside the flow cell 2 by cleaning the dirt that produces.And, in this case, can also be omitted in the cleaning (step S4) before ultraviolet absorbance is measured beginning.
As above, the ultraviolet absorbance determinator of this embodiment, because the mensuration interrupt procedure when measuring beginning to next time when ultraviolet absorbance measure to stop, be in the state of filling pure water in the flow cell 2, so can prevent that generation can't be removed problems such as dirt in the flow cell 2 by sample water generates dirt or by drying.
Claims (3)
1. ultraviolet absorbance determinator possesses:
Flow cell;
Sample water pure water supply unit, it is connected with described flow cell, can switch and supply with any one party of sample water and pure water to described flow cell;
The draining control part, its control is from the draining of described flow cell;
Light source, it is used for described flow cell irradiation ultraviolet radiation;
Measure calculating part, it comprises the photodetector that the ultraviolet ray that has seen through described flow cell is detected, and measures the ultraviolet absorbance of sample water based on the light detection limit of described photodetector;
Cleaning mechanism, it is to cleaning in the described flow cell; And
Control part, its control comprise stop the supply of described sample water after making sample water in described flow cell, circulate, measure termination when measuring, with described cleaning mechanism cleaning flow cell and the action of filling with pure water in flow cell in the action of interior, described sample water pure water supply unit, draining control part, light source, mensuration calculating part and cleaning mechanism.
2. ultraviolet absorbance determinator according to claim 1, wherein,
Described control part carries out the action of cleaning in the flow cell by described cleaning mechanism when measuring beginning.
3. ultraviolet absorbance determinator according to claim 1 and 2, wherein,
Also possess the minute configuration part, it can be imported the information relevant with minute and set the time relevant with mensuration;
Described control part is controlled the action of described sample water pure water supply unit, draining control part, light source, mensuration calculating part and cleaning mechanism based on the setting-up time of setting in described minute configuration part relevant with mensuration.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2008/061459 WO2009157057A1 (en) | 2008-06-24 | 2008-06-24 | Ultraviolet absorbance measuring instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101971005A true CN101971005A (en) | 2011-02-09 |
| CN101971005B CN101971005B (en) | 2013-11-20 |
Family
ID=41444135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801280055A Active CN101971005B (en) | 2008-06-24 | 2008-06-24 | Ultraviolet absorbance measuring instrument |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5013000B2 (en) |
| CN (1) | CN101971005B (en) |
| WO (1) | WO2009157057A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398966A (en) * | 2013-08-20 | 2013-11-20 | 杭州北斗星膜制品有限公司 | Method for detecting TMC concentration in organic solution by using spectrometer |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201120769D0 (en) | 2011-12-02 | 2012-01-11 | Biochrom Ltd | Improvements in and relating to devices for recieving liquid samples |
| JP6225522B2 (en) * | 2013-07-11 | 2017-11-08 | 栗田工業株式会社 | Water quality measuring device |
| WO2020165505A1 (en) * | 2019-02-15 | 2020-08-20 | Kemira Oyj | Method and arrangement for cleaning a sensor |
| CN113924490B (en) * | 2019-06-07 | 2024-01-23 | 哈希公司 | Sensor cleaning and calibration device and system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4165179A (en) * | 1976-08-19 | 1979-08-21 | Nippon Precision Optical Instrument Co., Ltd. | Device for wiping optical window in turbidimeter or similar optical instrument for examining liquid sample |
| JPH0658323B2 (en) * | 1990-04-28 | 1994-08-03 | 株式会社鶴見精機 | COD measuring device for water |
| JPH0915144A (en) * | 1995-07-03 | 1997-01-17 | Toa Denpa Kogyo Kk | Absorptiometer and temperature compensation method for the same |
| JP3448178B2 (en) * | 1997-01-17 | 2003-09-16 | 三菱重工業株式会社 | Automatic measurement method of calorific value of black liquor used for boiler fuel and the like, and boiler drive control method using the measurement method |
| JPH10206328A (en) * | 1997-01-24 | 1998-08-07 | Suido Kiko Kaisha Ltd | Water quality monitoring apparatus |
| JP2003305454A (en) * | 2003-02-17 | 2003-10-28 | Meidensha Corp | Intake water quality controller |
| JP2006153738A (en) * | 2004-11-30 | 2006-06-15 | Dkk Toa Corp | Integrating sphere type turbidimeter |
| CN1967215A (en) * | 2006-11-08 | 2007-05-23 | 浙江大学 | UV scanning type multispectral water-quality COD rapid detection method and device therefor |
-
2008
- 2008-06-24 WO PCT/JP2008/061459 patent/WO2009157057A1/en active Application Filing
- 2008-06-24 CN CN2008801280055A patent/CN101971005B/en active Active
- 2008-06-24 JP JP2010517614A patent/JP5013000B2/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103398966A (en) * | 2013-08-20 | 2013-11-20 | 杭州北斗星膜制品有限公司 | Method for detecting TMC concentration in organic solution by using spectrometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101971005B (en) | 2013-11-20 |
| JP5013000B2 (en) | 2012-08-29 |
| WO2009157057A1 (en) | 2009-12-30 |
| JPWO2009157057A1 (en) | 2011-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101971005B (en) | Ultraviolet absorbance measuring instrument | |
| CN102401811B (en) | Electrophoresis apparatus and control method thereof | |
| CN1310980A (en) | Method and equipment for treating various kinds of liquid | |
| CN110252712B (en) | Device for cleaning and calibrating water quality detection sensor | |
| CN101952730B (en) | Cleaning apparatus, and automatic analysis apparatus | |
| CN103796608A (en) | Method and device for rinsing endoscope channels | |
| JP2019152592A (en) | Water quality measuring device and water quality measuring method | |
| CN105865845B (en) | A kind of water process on-line period analysis system | |
| EP3781330A1 (en) | Machine foam cleaning system with integrated sensing | |
| CN115078004A (en) | Sampling and sample sending system, closestool and automatic cleaning method thereof | |
| KR102214543B1 (en) | Measuring device of Multi-item water quality | |
| JP2007101420A (en) | Cleaning device, device for measuring water quality and cleaning method | |
| CN208321425U (en) | A kind of teaching experiment biochip cleaning sterilizing device | |
| CN102897872A (en) | Film processing apparatus and operation method of film assembly | |
| JP2006153738A (en) | Integrating sphere type turbidimeter | |
| JP2010268938A (en) | Drum washing machine | |
| CN208596130U (en) | It is a kind of can be from the sensor head of sterilizing and washing | |
| JP3371632B2 (en) | Cleaning method for optical water quality measuring instrument | |
| CN107782401A (en) | A kind of intellectual water meter impeller | |
| JP2001050927A (en) | Cleaning apparatus for residual chlorine analyzer of discharge water in sewer | |
| JP4423774B2 (en) | Urinalysis device | |
| CN205679431U (en) | A kind of water processes on-line period and analyzes system | |
| JP3442891B2 (en) | Fully automatic turbidity measuring device | |
| CN102520199A (en) | On-line detection method of dye liquor components of bundle dyeing machine based on boards | |
| JPH0587725A (en) | Grain size distribution measuring 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |