CN106770249A - A kind of water quality Cr VI mixed color developing agent and its compound method - Google Patents
A kind of water quality Cr VI mixed color developing agent and its compound method Download PDFInfo
- Publication number
- CN106770249A CN106770249A CN201611238809.3A CN201611238809A CN106770249A CN 106770249 A CN106770249 A CN 106770249A CN 201611238809 A CN201611238809 A CN 201611238809A CN 106770249 A CN106770249 A CN 106770249A
- Authority
- CN
- China
- Prior art keywords
- color developing
- mixed color
- water
- developing agent
- water quality
- 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.)
- Pending
Links
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
- 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
- G01N2021/775—Indicator and selective membrane
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Plasma & Fusion (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth 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 The Use Of Chemical Reactions (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention discloses a kind of water quality Cr VI mixed color developing agent and its compound method, and following component is contained in every 100mL mixed color developing agents：Diphenylcarbazide 0.2g, ethanol 70mL, 6~12mL of SPA, 18~24mL of water.The present invention replaces acetone with ethanol as solvent, environmentally friendly and harmless to the human body, does not pollute the environment.When developer of the invention is used, it is measured by being directly added into after 2mL mixed color developing agents, and adds SPA to carry out Controlled acidity in mixed color developing agent, the influence that ferric iron in water sample is determined to content of 6-valence Cr ions can be eliminated, this invention simplifies operating procedure is determined, accuracy is determined high.
Description
Technical field
The present invention relates to a kind of water quality Cr VI mixed color developing agent and its compound method, belong to water quality Cr VI detection technique
Field.
Background technology
The valence state that the compound of chromium is common has trivalent and sexavalence.Murder by poisoning of the Cr VI to health is very big, to fish, three
The toxicity of valency chromium compound is bigger than Cr VI.In water body, Cr VI is typically with CrO4 2-、Cr2O7 2-、HCrO4 -Three kinds of anion
Form is present, and is influenceed by the condition such as pH value, organic matter, redox materials, temperature and hardness in water, trivalent chromium and Cr VI
Compound can be changed mutually.
The assay method of current water quality Cr VI is diphenyl carbazide spectrophotometry, and the preparation of its developer is by two
Dinitrodiphenyl carbazide is dissolved in acetone, is then diluted with water to required volume.It has the disadvantage that acetone is that a kind of poisonous, high volatility have
Machine reagent, there is certain murder by poisoning to human body, pollutes the environment.
The content of the invention
To solve the above problems, the present invention provides a kind of water quality Cr VI mixed color developing agent and its compound method, uses ethanol
It is nontoxic and do not pollute the environment instead of acetone as primary solvent, and with Determination of Hexavalent Chromium in control the SPA of color acidity
Mixed preparing developer, simplifies operating procedure.
The present invention is realized by following technical proposal：A kind of water quality Cr VI mixed color developing agent, it is characterised in that：Often
Contain following component in 100mL mixed color developing agents：Diphenylcarbazide 0.2g, ethanol 70mL, 6~12mL of SPA, water 18~
24mL。
The ethanol is absolute ethyl alcohol.
The mass concentration of the SPA is 85%.
The water is distilled water.
Another object of the present invention is also resided in and provides a kind of compound method of water quality Cr VI mixed color developing agent, by following
Operation：First SPA is dissolved in appropriate water, diphenylcarbazide, ethanol is subsequently adding, residue is added after shaking up dissolving
Water, contain following component in making gained per 100mL water quality Cr VI mixed color developing agents：Diphenylcarbazide 0.2g, ethanol
70mL, 6~12mL of SPA, 18~24mL of water, that is, obtain water quality Cr VI mixed color developing agent.
The application method of gained water quality Cr VI mixed color developing agent is：50mL water samples to be measured are taken to be placed in 50mL colorimetric cylinders,
2mL gained water quality Cr VI mixed color developing agents are added, is shaken up, after 5min, at 540nm wavelength, surveyed with 30mm cuvettes
It is fixed, by conventionally calculation, that is, obtain the content of 6-valence Cr ions of water sample to be measured.
Advantage and effect that the present invention possesses：Water quality Cr VI mixed color developing agent of the invention be by diphenylcarbazide,
Ethanol, SPA, water mixed preparing are formed.The present invention replaces acetone with ethanol as solvent, environmentally friendly and harmless to the human body, no
Pollute the environment.The application method of traditional developer, i.e. water quality Determination of Hexavalent Chromium standard《GB7467-87》Regulation, water sample is advance
Add 0.5mL（1+1）H3PO4Solution and 0.5mL（1+1）H2SO4Solution carrys out Controlled acidity, is subsequently adding 2mL developers and is surveyed
It is fixed.When developer of the invention is used, be measured by being directly added into after 2mL mixed color developing agents, and in mixed color developing agent plus
Enter SPA and carry out Controlled acidity, the influence that ferric iron in water sample is determined to content of 6-valence Cr ions can be eliminated, this invention simplifies survey
Determine operating procedure, determine accuracy high.
Brief description of the drawings
Fig. 1 is the standard working curve of embodiment 1.
Specific embodiment
Below by embodiment, the present invention will be further described.
Embodiment 1
First 8mL SPAs are dissolved in appropriate water, 0.2g diphenylcarbazides, 70mL ethanol is subsequently adding, after shaking up dissolving
Remaining water is added, following component is contained in making gained per 100mL water quality Cr VI mixed color developing agents：Diphenylcarbazide
0.2g, ethanol 70mL, SPA 8mL, water 22mL, that is, obtain water quality Cr VI mixed color developing agent.Wherein, ethanol is anhydrous second
Alcohol, the mass concentration of SPA is 85%, and water is distilled water.
The drafting of standard working curve：
0,0.20,0.50,1.00,2.00,4.00,6.00,8.00 and 10.00mL1 μ are separately added into 9 50mL colorimetric cylinders
The chromium standard solution of g/mL, is diluted with water to graticule, adds the mixed color developing agent of the above-mentioned preparations of 2mL, shakes up, after placing 10min,
It is measured at 540nm wavelength, as shown in Figure 1.
As can be seen from Figure 1, the correlation coefficient r of the standard working curve drawn with the mixed color developing agent prepared is 0.9998, accurate
Exactness is high.
The measure of recovery of standard addition：
The measure of water sample：Gone out by the second pond to coking secondary clarifier effluent and the chromium standard solution for adding a certain amount of 10 μ g/mL
The measure of content of 6-valence Cr ions in water, calculates recovery of standard addition, the degree of accuracy of further validation criteria curve.
The recovery testu result of table 1
As seen from Table 1, recovery of standard addition is 91~110%, further demonstrates and determines water quality six using the mixed color developing agent prepared
Valency chromium content exactness is high.
Embodiment 2
First 6mL SPAs are dissolved in appropriate water, 0.2g diphenylcarbazides, 70mL ethanol is subsequently adding, after shaking up dissolving
Remaining water is added, following component is contained in making gained per 100mL water quality Cr VI mixed color developing agents：Diphenylcarbazide
0.2g, ethanol 70mL, SPA 6mL, water 24mL, that is, obtain water quality Cr VI mixed color developing agent.Wherein, ethanol is anhydrous second
Alcohol, the mass concentration of SPA is 85%, and water is distilled water.
Embodiment 3
First 12mL SPAs are dissolved in appropriate water, 0.2g diphenylcarbazides, 70mL ethanol is subsequently adding, after shaking up dissolving
Remaining water is added, following component is contained in making gained per 100mL water quality Cr VI mixed color developing agents：Diphenylcarbazide
0.2g, ethanol 70mL, SPA 12mL, water 18mL, that is, obtain water quality Cr VI mixed color developing agent.Wherein, ethanol is anhydrous second
Alcohol, the mass concentration of SPA is 85%, and water is distilled water.
To a certain cleaning surface water, it is measured using two methods.Determination step and result are as follows：
The method of the present invention：Take 50mL water samples to be placed in 50mL colorimetric cylinders, add the gained water quality Cr VI mixing of 2mL embodiments 2
Developer, shakes up, and after 5min, at 540nm wavelength, is measured with 30mm cuvettes, and by calculating, the Cr VI of water sample contains
It is 0.885mg/L to measure.
《GB7467-87》Diphenyl carbazide spectrophotometry：Take 50mL water samples to be placed in 50mL colorimetric cylinders, add
0.5mL（1+1）H3PO4Solution and 0.5mL（1+1）H2SO4Solution, shakes up, and adds 2mL developers (I), shakes up, after 5min, in
At 540nm wavelength, it is measured with 30mm cuvettes, by calculating, the content of 6-valence Cr ions of water sample is 0.895mg/L.
By contrasting the measurement result of two methods, measurement result without significant difference, but from determination step, the present invention
Simplify operating procedure, and only use phosphoric acid Controlled acidity, it is not necessary to phosphoric acid and sulfuric acid co- controlling acidity, save reagent into
This.
Claims (6)
1. a kind of water quality Cr VI mixed color developing agent, it is characterised in that：Contain following component in per 100mL mixed color developing agents：Two
Dinitrodiphenyl carbazide 0.2g, ethanol 70mL, 6~12mL of SPA, 18~24mL of water.
2. water quality Cr VI mixed color developing agent according to claim 1, it is characterised in that：The ethanol is absolute ethyl alcohol.
3. water quality Cr VI mixed color developing agent according to claim 1, it is characterised in that：The mass concentration of the SPA
It is 85%.
4. water quality Cr VI mixed color developing agent according to claim 1, it is characterised in that：The water is distilled water.
5. a kind of compound method of water quality Cr VI mixed color developing agent, it is characterised in that by following operation：It is first that SPA is molten
In appropriate water, diphenylcarbazide, ethanol are subsequently adding, remaining water is added after shaking up dissolving, make gained per 100mL
Contain following component in water quality Cr VI mixed color developing agent：Diphenylcarbazide 0.2g, ethanol 70mL, 6~12mL of SPA, water
18~24mL, that is, obtain water quality Cr VI mixed color developing agent.
6. compound method according to claim 5, it is characterised in that：The user of gained water quality Cr VI mixed color developing agent
Method is：Take 50mL water samples to be measured to be placed in 50mL colorimetric cylinders, add 2mL gained water quality Cr VI mixed color developing agents, shake up, 5min
Afterwards, at 540nm wavelength, it is measured with 30mm cuvettes, by conventionally calculation, that is, the Cr VI for obtaining water sample to be measured contains
Amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611238809.3A CN106770249A (en) | 2016-12-28 | 2016-12-28 | A kind of water quality Cr VI mixed color developing agent and its compound method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611238809.3A CN106770249A (en) | 2016-12-28 | 2016-12-28 | A kind of water quality Cr VI mixed color developing agent and its compound method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106770249A true CN106770249A (en) | 2017-05-31 |
Family
ID=58923105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611238809.3A Pending CN106770249A (en) | 2016-12-28 | 2016-12-28 | A kind of water quality Cr VI mixed color developing agent and its compound method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106770249A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296947A (en) * | 2019-07-30 | 2019-10-01 | 杭州鑫月建材有限公司 | A kind of cement Cr VI test powder indicator and preparation method thereof |
| CN116429760A (en) * | 2023-03-27 | 2023-07-14 | 广州伊创科技股份有限公司 | Color reagent for monitoring total chromium content in water and method for online monitoring total chromium content in water |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2757123Y (en) * | 2004-12-23 | 2006-02-08 | 广东环凯微生物科技有限公司 | Quick detecting reagent box for sexavalence chromium |
| 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 |
| CN102411001A (en) * | 2011-08-08 | 2012-04-11 | 山东汇金彩钢有限公司 | Method for rapid detection of hexavalent chromium ions in sewage |
| CN103018183A (en) * | 2011-09-22 | 2013-04-03 | 江苏天瑞仪器股份有限公司 | Kit and method used for monitoring hexavalent chromium online |
-
2016
- 2016-12-28 CN CN201611238809.3A patent/CN106770249A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2757123Y (en) * | 2004-12-23 | 2006-02-08 | 广东环凯微生物科技有限公司 | Quick detecting reagent box for sexavalence chromium |
| 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 |
| CN102411001A (en) * | 2011-08-08 | 2012-04-11 | 山东汇金彩钢有限公司 | Method for rapid detection of hexavalent chromium ions in sewage |
| CN103018183A (en) * | 2011-09-22 | 2013-04-03 | 江苏天瑞仪器股份有限公司 | Kit and method used for monitoring hexavalent chromium online |
Non-Patent Citations (2)
| Title |
|---|
| 徐义邦 等: "二苯碳酰二肼分光光度法测定水中六价铬方法的改进", 《中国给水排水》 * |
| 高春长 王桂山: "废水中六价铬快速测定", 《电镀与环保》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296947A (en) * | 2019-07-30 | 2019-10-01 | 杭州鑫月建材有限公司 | A kind of cement Cr VI test powder indicator and preparation method thereof |
| CN110296947B (en) * | 2019-07-30 | 2022-02-08 | 杭州鑫月建材有限公司 | Cement hexavalent chromium test powder indicator and preparation method thereof |
| CN116429760A (en) * | 2023-03-27 | 2023-07-14 | 广州伊创科技股份有限公司 | Color reagent for monitoring total chromium content in water and method for online monitoring total chromium content in water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Aydin et al. | A simple and novel deep eutectic solvent based ultrasound-assisted emulsification liquid phase microextraction method for malachite green in farmed and ornamental aquarium fish water samples | |
| Szigeti et al. | A novel polymeric membrane electrode for the potentiometric analysis of Cu2+ in drinking water | |
| Samad et al. | High-resolution denitrification kinetics in pasture soils link N2O emissions to pH, and denitrification to C mineralization | |
| Xie et al. | Arsenic speciation analysis of human urine using ion exchange chromatography coupled to inductively coupled plasma mass spectrometry | |
| CN101995383A (en) | Method for measuring copper ion content of solution | |
| Gupta et al. | Aluminium (III)-selective PVC membrane sensor based on a Schiff base complex of N, N′-bis (salicylidene)-1, 2-cyclohexanediamine | |
| Barghouthi et al. | Spectrophotometric determination of fluoride in groundwater using resorcin blue complexes | |
| Rounaghi | Selective uranyl cation detection by polymeric ion selective electrode based on benzo-15-crown-5 | |
| CN101539526B (en) | Method for preparing prefabricated reagent for fast measuring COD in water body and application thereof | |
| CN101603925A (en) | The hyperchannel direction selecting flow-injection quick analysis system for hexavalent chromium water quality | |
| CN106525740A (en) | Method for determination of hexavalent chromium in basic chromium sulfate | |
| CN106770249A (en) | A kind of water quality Cr VI mixed color developing agent and its compound method | |
| Ma et al. | A new aluminum (III)-selective potentiometric sensor based on N, N′-propanediamide bis (2-salicylideneimine) as a neutral carrier | |
| CN105987900A (en) | Detection method of sulfate ion in electrolyte used for lithium ion battery | |
| Ulusoy | Determination of trace inorganic mercury species in water samples by cloud point extraction and UV-Vis spectrophotometry | |
| CN103487390A (en) | Testing method for cadmium content in water body | |
| Tomar et al. | Nickel analysis in real samples by Ni2+ selective PVC membrane electrode based on a new Schiff base | |
| Sun et al. | Optimization of species stability and interconversion during the complexing reaction for chromium speciation by high‐performance liquid chromatography with inductively coupled plasma mass spectrometry | |
| Crea et al. | Enhancement of hydrolysis through the formation of mixed hetero-metal species | |
| Deepa et al. | A simple spectrophotometric method for the determination of arsenic in industrial and environmental samples using 2, 4-Dihydroxy benzophenone-2-amino thiophenol | |
| CN106770916A (en) | One kind determines Cr in chromium plating tank liquor3+The method of content | |
| CN104849271B (en) | A kind of probe based on flower cyanines is used for the method for detecting trace bivalent cupric ion | |
| Sen et al. | Development and validation of a simple and robust method for arsenic speciation in human urine using HPLC/ICP-MS | |
| Sharma et al. | Use of variamine blue dye in spectrophotometric determination of water soluble Cr (VI) in Portland cement | |
| CN104148009A (en) | Composite bentonite material capable of quickly identifying hexavalent chromium ions in water with naked eyes as well as preparation method and application of material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 650399 Kunming City, Yunnan Province, Anning City, Baihua East Road extension line 26 Applicant after: Yunnan Tianlong Environment Technology Co., Ltd. Address before: 650399 Kunming City, Yunnan Province, Anning City, Baihua East Road extension line 26 Applicant before: Yunnan Kunming Iron & Steel Water Purification Technology Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |