JPS5565139A - Measuring method of nitric and nitrous acid ion concentration and its unit - Google Patents
Measuring method of nitric and nitrous acid ion concentration and its unitInfo
- Publication number
- JPS5565139A JPS5565139A JP13901978A JP13901978A JPS5565139A JP S5565139 A JPS5565139 A JP S5565139A JP 13901978 A JP13901978 A JP 13901978A JP 13901978 A JP13901978 A JP 13901978A JP S5565139 A JPS5565139 A JP S5565139A
- Authority
- JP
- Japan
- Prior art keywords
- test water
- optical path
- wave lengths
- specific
- concentration
- 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
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title 1
- -1 nitrous acid ion Chemical class 0.000 title 1
- 230000003287 optical effect Effects 0.000 abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- 230000005540 biological transmission Effects 0.000 abstract 2
- 230000031700 light absorption Effects 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 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
- G01N21/17—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
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
PURPOSE:To enable to measure NO2, NO3 concentration in water with high accuracy, by measuring the degree of transmission of test water at three specific wave lengths at the ultraviolet region different each other and operating and processing the value of transmission of each with specific equation to eliminate the effect of organic substance and the tubidity. CONSTITUTION:The ultraviolet light source 1 and the first and second optical paths PS, PR separated into two taking the light source as the original point, are provided. The test water 4 is present on the first optical path PS only and the first and second photo-electric conversion elements 2, 3 are placed at the end point of each optical path. Further, three sets of optical filters Fa-Fc which select and transmit the rays of three wave lengths different and specific are placed on the way of each optical path sequentially. By using the measuring unit like this, the degree of light absorption X-Z of the test water 4 in three wave lengths of 220nm, 250nm, and 400nm and the NO2, NO3 concentration in the test water are calculated with operation and processing for the value of each light absorption with the equation A1=(X-Z)-alpha(Y-Z). Thus, without requiring the addition of reactive agent, continuous measurement is made with high accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13901978A JPS6019452B2 (en) | 1978-11-10 | 1978-11-10 | Nitrate/nitrite ion concentration measurement method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13901978A JPS6019452B2 (en) | 1978-11-10 | 1978-11-10 | Nitrate/nitrite ion concentration measurement method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5565139A true JPS5565139A (en) | 1980-05-16 |
| JPS6019452B2 JPS6019452B2 (en) | 1985-05-16 |
Family
ID=15235571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13901978A Expired JPS6019452B2 (en) | 1978-11-10 | 1978-11-10 | Nitrate/nitrite ion concentration measurement method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6019452B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0074477A2 (en) * | 1981-09-14 | 1983-03-23 | Heinz Joachim Müller | Determination of nitrate in water |
| JPS6270734A (en) * | 1985-09-25 | 1987-04-01 | Kankyo Eng Kk | Method and apparatus for quantitative analysis of nox nitrogen |
| JPS63191945A (en) * | 1987-02-05 | 1988-08-09 | Kankyo Eng Kk | Method and apparatus for quantitative determination of non-functional nitrogen |
| JPH02198341A (en) * | 1989-01-28 | 1990-08-06 | Horiba Ltd | Method for measuring total nitrogen using uv method |
| CN112179858A (en) * | 2020-09-22 | 2021-01-05 | 杭州启绿科技有限公司 | Water quality detection method based on turbidity compensation technology |
| CN112461774A (en) * | 2020-11-20 | 2021-03-09 | 杭州绿洁环境科技股份有限公司 | Turbidity compensation method for total nitrogen analyzer |
-
1978
- 1978-11-10 JP JP13901978A patent/JPS6019452B2/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0074477A2 (en) * | 1981-09-14 | 1983-03-23 | Heinz Joachim Müller | Determination of nitrate in water |
| JPS6270734A (en) * | 1985-09-25 | 1987-04-01 | Kankyo Eng Kk | Method and apparatus for quantitative analysis of nox nitrogen |
| JPS63191945A (en) * | 1987-02-05 | 1988-08-09 | Kankyo Eng Kk | Method and apparatus for quantitative determination of non-functional nitrogen |
| JPH02198341A (en) * | 1989-01-28 | 1990-08-06 | Horiba Ltd | Method for measuring total nitrogen using uv method |
| CN112179858A (en) * | 2020-09-22 | 2021-01-05 | 杭州启绿科技有限公司 | Water quality detection method based on turbidity compensation technology |
| CN112461774A (en) * | 2020-11-20 | 2021-03-09 | 杭州绿洁环境科技股份有限公司 | Turbidity compensation method for total nitrogen analyzer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6019452B2 (en) | 1985-05-16 |
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