CN107271379A - A kind of water quality quick determination method - Google Patents
A kind of water quality quick determination method Download PDFInfo
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- CN107271379A CN107271379A CN201710329846.3A CN201710329846A CN107271379A CN 107271379 A CN107271379 A CN 107271379A CN 201710329846 A CN201710329846 A CN 201710329846A CN 107271379 A CN107271379 A CN 107271379A
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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Abstract
A kind of water quality quick determination method, comprises the following steps：(1) configuration standard solution：The chromium standard solution of various concentrations is configured, sulfuric acid solution, regulation pH value to 1.5 2.5 is added；(2) 2 5mL diphenylcarbazide solution are sequentially added；Add 2 5mL hydrogen peroxide solutions；Add 2 4% sodium hydroxide solution, regulation pH value to 12, stir, stand 2min；Sulfuric acid solution is added, regulation pH value stirs to 12, stands 2min；(3) solution of gained is transferred in cuvette respectively, measures absorbance；(4) according to the ABS values of measured standard liquid, standard working curve is made；(5) take water sample to be measured to be pre-processed, determine and obtain water sample ABS values, by standard working curve, calculate the concentration of total chromium in water sample.The Water quality detection method of the present invention, simple to operate, with low cost, the testing result degree of accuracy is high, and will not produce the material of pollution environment, environmentally friendly.
Description
Technical field
The present invention relates to water analysis field, more particularly to a kind of water quality quick determination method.
Background technology
Water resource is closely bound up with us, thus water quality detection quality standard in water application in occupation of indispensable
Status.The quality of water quality is good and bad complementary with environment, and the change quality of water quality can also directly result in our living environments
Go from bad to worse.The purpose of conventional water quality detection is not only only that being provided safeguard with water for our life, final goal in a word
Even more foundation and data are provided for the management and scientific research of environment.Water quality detection, is exactly monitoring and dirt in detection water body
Contaminate thing species, and various pollutants variation tendency, while being also a process with above evaluating water quality situation.Water quality
The application of detection widely, not only including industrial water drainage, in addition to unpolluted natural water etc..Conventional water quality detection
The water quality of drinking water can be not only judged, can be with objective evaluation water quality situation, in a word, water quality detection is necessary.
Water quality field quick detection can provide accurate Monitoring Data within the most short time, can be further to take precautions against pollution
Diffusion and take effective counter-measure to provide scientific basis in time, but have that testing result precision is not high to ask mostly at present
Topic.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without answering
When the prior art for being considered as recognizing or implying the information structure in any form well known to persons skilled in the art.
The content of the invention
In view of the above-mentioned problems in the prior art, it is a primary object of the present invention to solve the defect of prior art,
The present invention provides the detection method in a kind of significant water quality of reasonable in design, application effect.
A kind of water quality quick determination method, comprises the following steps：
(1) configuration standard solution：Configuration concentration is respectively 0mg/L, 0.02mg/L, 0.04mg/L, 0.08mg/L
0.16mg/L, 0.32mg/L, 0.64,1.28mg/L chromium standard solution, add 1-4% sulfuric acid solution, regulation pH value to
1.5-2.5；
(2) 2-5ml, 0.5-1.5% diphenylcarbazide solution are sequentially added；Add 2-5ml, 2.5-5% dioxygen
The aqueous solution；2-4% sodium hydroxide solution is added, regulation pH value stirs to 12, stands 2min；Sulfuric acid solution is added, is adjusted
PH value is saved to 1-2, is stirred, 2min is stood；
(3) solution of gained is transferred in cuvette respectively, measures absorbance；
(4) according to the ABS values of measured standard liquid, standard working curve is made；
(5) take water sample to be measured to be pre-processed, determine and obtain water sample ABS values, by standard working curve, calculate water sample
In total chromium concentration.
Compared with prior art, the present invention has the advantages that：
The Water quality detection method of the present invention, simple to operate, with low cost, the testing result degree of accuracy is high, and will not
The material of pollution environment is produced, it is environmentally friendly.
Embodiment
The embodiment of the present invention is described in detail with reference to embodiment, it is to be understood that the guarantor of the present invention
Shield scope is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
Embodiment 1：
A kind of water quality quick determination method, comprises the following steps：
(1) configuration standard solution：Configuration concentration is respectively 0mg/L, 0.02mg/L, 0.04mg/L, 0.08mg/L
0.16mg/L, 0.32mg/L, 0.64,1.28mg/L chromium standard solution, add 1-4% sulfuric acid solution, regulation pH value to 2；
(2) 2ml, 0.5-1.5% diphenylcarbazide solution are sequentially added；Add 2ml, 5% hydrogen peroxide solution；Plus
Enter 4% sodium hydroxide solution, regulation pH value to 12, stir, stand 2min；Sulfuric acid solution is added, pH value is adjusted to 2,
Stir, stand 2min；
(3) solution of gained is transferred in cuvette respectively, measures absorbance；
(4) according to the ABS values of measured standard liquid, standard working curve is made；
(5) take water sample to be measured to be pre-processed, determine and obtain water sample ABS values, by standard working curve, calculate water sample
In total chromium concentration.
Embodiment 2：
A kind of water quality quick determination method, comprises the following steps：
(1) configuration standard solution：Configuration concentration is respectively 0mg/L, 0.02mg/L, 0.04mg/L, 0.08mg/L
0.16mg/L, 0.32mg/L, 0.64,1.28mg/L chromium standard solution, add 1-4% sulfuric acid solution, regulation pH value to
1.5-2.5；
(2) 5ml, 1.5% diphenylcarbazide solution are sequentially added；Add 5ml, 2.5 hydrogen peroxide solution；Add
2% sodium hydroxide solution, regulation pH value stirs to 12, stands 2min；Sulfuric acid solution is added, regulation pH value is stirred to 1
Mix uniform, stand 2min；
(3) solution of gained is transferred in cuvette respectively, measures absorbance；
(4) according to the ABS values of measured standard liquid, standard working curve is made；
(5) take water sample to be measured to be pre-processed, determine and obtain water sample ABS values, by standard working curve, calculate water sample
In total chromium concentration.
It is foregoing to the present invention specific illustrative embodiment description be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles and its reality of the present invention should
With so that those skilled in the art can realize and using the present invention a variety of exemplaries and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (4)
1. a kind of water quality quick determination method, it is characterised in that comprise the following steps：
(1) configuration standard solution：Configuration concentration be respectively 0mg/L, 0.02mg/L, 0.04mg/L, 0.08mg/L 0.16mg/L,
0.32mg/L, 0.64,1.28mg/L chromium standard solution, add sulfuric acid solution, regulation pH value to 1.5-2.5；
(2) 2-5mL diphenylcarbazide solution is sequentially added；Add 2-5mL hydrogen peroxide solutions；Add 2-4% sodium hydroxide
Solution, regulation pH value stirs to 12, stands 2min；Sulfuric acid solution is added, regulation pH value stirs to 1-2, stood
2min；
(3) solution of gained is transferred in cuvette respectively, measures absorbance；
(4) according to the ABS values of measured standard liquid, standard working curve is made；
(5) take water sample to be measured to be pre-processed, determine and obtain water sample ABS values, by standard working curve, calculate total in water sample
The concentration of chromium.
2. water quality quick determination method according to claim 1, it is characterised in that the quality of sulfuric acid solution in step (1)
Concentration is 1-4%.
3. water quality quick determination method according to claim 1, it is characterised in that diphenylcarbazide is molten in step (2)
The mass concentration of liquid is 0.5-1.5%.
4. water quality quick determination method according to claim 1, it is characterised in that the matter of hydrogen peroxide solution in step (2)
Amount concentration is 2.5-5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710329846.3A CN107271379A (en) | 2017-05-11 | 2017-05-11 | A kind of water quality quick determination method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710329846.3A CN107271379A (en) | 2017-05-11 | 2017-05-11 | A kind of water quality quick determination method |
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| Publication Number | Publication Date |
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| CN107271379A true CN107271379A (en) | 2017-10-20 |
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| CN201710329846.3A Pending CN107271379A (en) | 2017-05-11 | 2017-05-11 | A kind of water quality quick determination method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900670A (en) * | 2010-05-25 | 2010-12-01 | 深圳市清时捷科技有限公司 | Reagent for determining hexavalent chromium by spectrophotometry |
| CN102121905A (en) * | 2010-12-16 | 2011-07-13 | 上海交通大学 | Test strip for detecting heavy metal-chromium (Cr) in water quality and preparation method thereof |
| CN103543115A (en) * | 2013-10-31 | 2014-01-29 | 大连大公环境检测有限公司 | Method for detecting concentration of chromium ion in water body |
| CN103543143A (en) * | 2012-07-10 | 2014-01-29 | 东亚Dkk株式会社 | Chromium measurement reagent and method |
| CN103822883A (en) * | 2012-12-25 | 2014-05-28 | 无锡点创科技有限公司 | Method for detecting total chromium in water |
| CN104007078A (en) * | 2014-06-18 | 2014-08-27 | 宁波市环境监测中心 | Method for rapidly detecting total concentration of chromium in water and detection kit |
| CN104949932A (en) * | 2015-06-29 | 2015-09-30 | 苏州东辰林达检测技术有限公司 | Method for detecting chromium ions in water |
-
2017
- 2017-05-11 CN CN201710329846.3A patent/CN107271379A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900670A (en) * | 2010-05-25 | 2010-12-01 | 深圳市清时捷科技有限公司 | Reagent for determining hexavalent chromium by spectrophotometry |
| CN102121905A (en) * | 2010-12-16 | 2011-07-13 | 上海交通大学 | Test strip for detecting heavy metal-chromium (Cr) in water quality and preparation method thereof |
| CN103543143A (en) * | 2012-07-10 | 2014-01-29 | 东亚Dkk株式会社 | Chromium measurement reagent and method |
| CN103822883A (en) * | 2012-12-25 | 2014-05-28 | 无锡点创科技有限公司 | Method for detecting total chromium in water |
| CN103543115A (en) * | 2013-10-31 | 2014-01-29 | 大连大公环境检测有限公司 | Method for detecting concentration of chromium ion in water body |
| CN104007078A (en) * | 2014-06-18 | 2014-08-27 | 宁波市环境监测中心 | Method for rapidly detecting total concentration of chromium in water and detection kit |
| CN104949932A (en) * | 2015-06-29 | 2015-09-30 | 苏州东辰林达检测技术有限公司 | Method for detecting chromium ions in water |
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Application publication date: 20171020 |