CN110274947A - One kind being based on distributed heterogeneous space-data integration - Google Patents
One kind being based on distributed heterogeneous space-data integration Download PDFInfo
- Publication number
- CN110274947A CN110274947A CN201910494411.3A CN201910494411A CN110274947A CN 110274947 A CN110274947 A CN 110274947A CN 201910494411 A CN201910494411 A CN 201910494411A CN 110274947 A CN110274947 A CN 110274947A
- Authority
- CN
- China
- Prior art keywords
- cadmium
- data
- solution
- redox graphene
- chitosan
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y15/00—Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/301—Reference electrodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/48—Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrochemistry (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Composite Materials (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Materials Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention discloses one kind to be based on distributed heterogeneous space-data integration, it include: information collection and storing process to essential information acquisition and Spatial information collection, by collected information input and store, data handling procedure reprocesses the raw information of input, inquiry with retrieving by GIS-Geographic Information System in conjunction with management information system, the form of expression abundant is provided using GIS-Geographic Information System for management information system, the management space of expansion management information system simultaneously forms visual management information system, the abstract data in management information system is established with geographical location to contact, data output；The present invention, which is utilized, possesses higher detection sensitivity to heavy metal cadmium, the chitosan of lower minimum detection limit/N doping redox graphene/gold/cadmium trace sensor is acquired heavy metal cadmium ion, the accuracy of data acquisition is greatly improved, keeps integrated data more accurate.
Description
Technical field
The invention belongs to technical field of geographic information, and in particular to one kind is based on distributed heterogeneous space data integration side
Method.
Background technique
Water is Source of life, however, as modern society's industrialization degree constantly enhances, the water such as river, lake and reservoir
Body pollution problem becomes increasingly conspicuous, and the production and life to the people bring great harm, and especially heavy metal pollution is nondegradable
Performance seriously endangers the health and safety of the ecosystem.
Although the integrated and management method of existing heavy metal in water related data can be to a certain extent to heavy metal
The data of pollution carry out it is certain integrated, but due to during acquiring heavy metal in water content, corresponding heavy metal sensor
Minimum detection limit it is excessively high, it is too small to corresponding heavy metal sensitivity, greatly reduce data acquisition accuracy, Jin Erying
The precise degrees for ringing integrated heavy metal data cause people to judge content of beary metal by accident, in order to solve the acquisition of heavy metal data
In the process, the deficiency of heavy metal sensor, people research and develop corresponding heavy metal sensor to cover the shortage, however, for existing
In the sensor for detecting heavy metal cadmium, the prior art, which utilizes, contains more amino and carboxyl and cadmium ion in chitosan molecule chain
It cooperatively forms crab and closes object, and then heavy metal cadmium is detected, it is in order to enhance electric conductivity, chitosan is compound with graphene,
Although enhancing electric conductivity and mechanical property to a certain extent, it is excessively high not can solve minimum detection limit, sensitive to spend
Small problem.
Summary of the invention
It is an object of the invention to: one kind is provided based on distributed heterogeneous space-data integration, successively carries out information
Acquisition and storage, data processing, inquiry and retrieval and data output, prevention and treatment and improvement to heavy metal pollution of water body provide decision
It supports, it is lower using possessing in order to obtain the content information of Heavy Metals in Waters cadmium ion in information collection and storing process
Minimum detection limit, compared with high detection sensitivity chitosan/N doping redox graphene/gold/cadmium trace sensor to a huge sum of money
Belong to cadmium ion to be detected, greatly improve the accuracy of data acquisition, keep integrated data more accurate, is a water body huge sum of money
Belong to the prevention and treatment of pollution and administer and decision support is provided.
One kind being based on distributed heterogeneous space-data integration, includes the following:
Information collection and storage: including the heavy metal in water to essential information acquisition and Spatial information collection, essential information
Iron content information and blowdown information, the content of chromium ion in heavy metal ion content information are acquired with sensor, will be adopted
The information input collected and storage；
Data processing: reprocessing the raw information of input, according to the extension of time, updates and improves water environment number
According to, and data are modified and edited as needed；
Inquiry is with retrieval: being management letter using GIS-Geographic Information System by GIS-Geographic Information System in conjunction with management information system
Breath system provides the form of expression abundant, and the management space of expansion management information system simultaneously forms visual agrment information system
System is established the abstract data in management information system with geographical location and is contacted, realizes and carry out simultaneously to space and attribute data
Convenient, flexible, accurately inquiry and positioning；
Data output: the result of inquiry and data analysis result are shown on the computer screen, printed by printer
Output, and report and thematic map output are provided for statistics, prediction and the function of evaluation.
Preferably, in the information collection and storing process, space distribution information includes the space of sewage draining exit and water body
Distributed intelligence.
Preferably, described in the collection process of heavy metal cadmium iron content information, utilize chitosan/N doping oxygen reduction
Graphite alkene/gold/cadmium trace sensor is acquired heavy metal cadmium ion.
Further, the chitosan/N doping redox graphene/gold/cadmium trace sensor preparation method
Are as follows:
The preparation of S1, N doping redox graphene: graphene oxide and acetoxime are dissolved separately in distilled water,
Ammonium hydroxide is added and adjusts pH value of solution=9-10, is condensed back 12-15h under 95 DEG C of constant temperatures, is washed to neutrality, at subzero 50 DEG C
Freeze-drying, is prepared N doping redox graphene；
The preparation of S2, nano-Au solution: chlorauric acid solution is heated to boiling, and sodium citrate solution is added, continues to heat
30-60min, it is cooling, obtain nano-Au solution；
S3, deposit liquid preparation: acetic acid is added in nano-Au solution, be then respectively adding chitosan, caddy and
Deposition liquid is prepared in N doping redox graphene made from step S1, uniform stirring 3-5h；
S4, chitosan/N doping redox graphene/gold/cadmium trace sensor preparation: step S3 is prepared
Deposition liquid be added in electrolytic cell, using the mode of three electrodes using glass-carbon electrode as working electrode, saturation Ag/AgCl be reference
Electrode, platinum electrode are auxiliary electrode, are deposited under -1.2V voltage, and it is 0.2mol/ that the glass-carbon electrode being modified, which is added to concentration,
It is crosslinked 3h in the sodium tripolyphosphate solution of L, is washed using dehydrated alcohol, chitosan/N doping reduction-oxidation graphite is prepared
Alkene/gold/cadmium trace sensor.
Preferably, in the preparation process of step S1 N doping redox graphene, the matter of graphene oxide and acetoxime
Amount is than being 1:0.2-1.5.
Preferably, in the step S2, the volume ratio of the chlorauric acid solution and sodium citrate solution is 20:1, gold chloride
The mass fraction of solution is 0.02%, and the mass fraction of sodium citrate solution is 2%.
Preferably, in the step S2, the volume ratio of the acetic acid and nano-Au solution is 100:7-10, and the shell is poly-
The mass ratio of N doping redox graphene made from sugar, caddy and step S1 is 1:0.2:0.1.
Preferably, it in the step S4, is added in edta solution and elutes after dehydrated alcohol washing, ethylenediamine
The concentration of tetrem acid solution is 0.3mol/L, elution time 5-7h.
Preferably, in step S4 chitosan/N doping redox graphene/gold/cadmium trace sensor preparation process,
Sedimentation time is 180-220s.
Beneficial effect
(1) of the invention based on distributed heterogeneous space-data integration, at information collection and storage, data
Reason, inquiry with retrieval and data export, wherein inquiry with retrieving by GIS-Geographic Information System in conjunction with management information system, make
Data are more concentrated after processing, are concise, form visual management information system, and the display of abstract data image is existed
On map, final integrated more accurately data provide decision support for the prevention and treatment and improvement of heavy metal pollution of water body.
(2) present invention is in information collection and storing process, in order to obtain the content information of Heavy Metals in Waters cadmium ion,
Heavy metal cadmium ion is detected using chitosan/N doping redox graphene/gold/cadmium trace sensor, chitosan/
In N doping redox graphene/gold/cadmium trace sensor preparation process, firstly, using possess compared with high nitrogen content and compared with
Reducing agent and nitrating agent of the acetoxime of strong reduction effect as substitution hydrazine hydrate, are prepared N doping using oxidation-reduction method
By gold chloride and sodium citrate redox reaction, preparation occur for redox graphene secondly, being Jin Yuan with gold chloride
Nanogold is obtained, finally, passing through electro-deposition and using sodium tripolyphosphate as crosslinking agent, is washed using ethylenediamine tetra-acetic acid
It is de-, chitosan/N doping redox graphene/gold/cadmium trace sensor is prepared.
(3) in chitosan produced by the present invention/N doping redox graphene/gold/cadmium trace sensor, gold nano
Grain possess stronger adsorption capacity, can enhance glassy carbon electrode surface modification material electron transfer capabilities, and nanogold with
Amino in chitosan possesses stronger affinity, by being co-deposited the modification for keeping its even closer, uniform in glass-carbon electrode table
Face provides bigger hold in addition, N doping redox graphene obtained possesses bigger specific surface area for gold nano grain
Section product, N doping redox graphene increase electron density while increasing specific surface area, increase conductivity, obtained
Chitosan/N doping redox graphene/gold/cadmium trace sensor each component possesses preferable synergistic effect, possesses lower
Minimum detection limit, higher detection sensitivity is possessed to heavy metal cadmium, greatly improve data acquisition accuracy.
Detailed description of the invention
Fig. 1 is a kind of flow chart based on distributed heterogeneous space-data integration；
A, b are respectively N doping oxygen reduction fossil made from graphene oxide used in step S1 and step S1 in Fig. 2
The scanning electron microscope diagram of black alkene；
Fig. 3 is the transmission electron microscope picture of nanogold particle made from step S2；
Fig. 4 is chitosan made from step S4/N doping redox graphene/gold/cadmium trace sensor scanning electricity
Sub- microscope figure.
Specific embodiment
Clear, complete description is carried out below with reference to technical solution of the attached drawing to various embodiments of the present invention, it is clear that is retouched
The embodiment stated is only a part of the embodiments of the present invention, instead of all the embodiments；Based on the embodiment of the present invention, originally
Field those of ordinary skill obtained all other embodiment without making creative work, belongs to this hair
Bright protected range.
Embodiment 1
One kind being based on distributed heterogeneous space-data integration, includes the following:
Information collection and storage: being acquired essential information and spatial information, and essential information includes the heavy metal in water
Iron content information and blowdown information, heavy metal ion content information includes heavy metal cadmium iron content information, in heavy metal cadmium
In the collection process of iron content information, using chitosan/N doping redox graphene/gold/cadmium trace sensor to a huge sum of money
Belong to cadmium ion to be acquired, space distribution information includes the space distribution information of sewage draining exit and water body, by collected basic letter
Breath and space distribution information are inputted and are stored according to predetermined input format；
Data processing: reprocessing the raw information of input, according to the extension of time, updates and improves water environment number
According to, and data are modified and edited as needed；
Inquiry is with retrieval: being management letter using GIS-Geographic Information System by GIS-Geographic Information System in conjunction with management information system
Breath system provides the form of expression abundant, and the management space of expansion management information system simultaneously forms visual agrment information system
System is established the abstract data in management information system with geographical location and is contacted, realizes and carry out simultaneously to space and attribute data
Convenient, flexible, accurately inquiry and positioning, space-attribute is two inverse process, attribute with attribute-space bidirectional inquiry
Search space is first to provide attribute conditions, then searches the spatial object for the condition that meets, and then in GIS platform
It has been shown that, space querying attribute are to select spatial object by GIS platform, then inquire its attribute；
Data output: the result of inquiry and data analysis result are shown on the computer screen, printed by printer
Output, and report and thematic map output are provided for statistics, prediction and the function of evaluation.
Embodiment 2-5
It is poly- using shell in order to obtain the content information of Heavy Metals in Waters cadmium ion in information collection and storing process
Sugar/N doping redox graphene/gold/cadmium trace sensor detects heavy metal cadmium ion.
It is poly- in order to probe into chitosan/N doping redox graphene/gold/cadmium trace sensor performance and best shell
Sugar/N doping redox graphene/gold/cadmium trace sensor preparation method, following embodiment to chitosan/N doping also
Former graphene oxide/gold/cadmium trace sensor preparation parameter and chitosan obtained/N doping redox graphene/gold/
The performance of cadmium trace sensor is probed into.
Chitosan/N doping redox graphene/gold/cadmium trace sensor preparation method, includes the following steps:
The preparation of S1, N doping redox graphene: the graphene oxide of certain mass ratio and acetoxime difference is molten
Solution is added ammonium hydroxide and adjusts pH value of solution=9, be condensed back 12h under 95 DEG C of constant temperatures, be washed to neutrality in distilled water,
Subzero 50 DEG C of freeze-dryings, are prepared N doping redox graphene；
The preparation of S2, nano-Au solution: chlorauric acid solution is heated to boiling, and sodium citrate solution is added, continues to heat
30min, wherein the volume ratio of chlorauric acid solution and sodium citrate solution is 20:1, and the mass fraction of chlorauric acid solution is
0.02%, the mass fraction of sodium citrate solution is 2%, cooling, obtains nano-Au solution；
S3, the preparation for depositing liquid: acetic acid is added in nano-Au solution, the volume ratio of acetic acid and nano-Au solution is
100:7 is separately added into N doping redox graphene made from chitosan, caddy and step S1, wherein chitosan, chlorine
The mass ratio of N doping redox graphene made from cadmium and step S1 is 1:0.2:0.1, and uniform stirring 3h is prepared
Deposit liquid；
S4, chitosan/N doping redox graphene/gold/cadmium trace sensor preparation: step S3 is added to electricity
It solves in slot, using the mode of three electrodes using glass-carbon electrode as working electrode, saturation Ag/AgCl is reference electrode, supplemented by platinum electrode
Electrode is helped, under -1.2V voltage, deposits 210s, the glass-carbon electrode being modified is added to the trimerization phosphorus that concentration is 0.2mol/L
It is crosslinked 3h, dehydrated alcohol and deionized water washing in acid sodium solution, is added in edta solution and elutes, ethylenediamine tetraacetic
The concentration of acetic acid solution be 0.3mol/L, elution time 5h, be prepared chitosan/N doping redox graphene/gold/
Cadmium trace sensor.
In order to probe under different preparation parameters to chitosan obtained/N doping redox graphene/gold/cadmium trace
The influence of sensor performance measures chitosan/N doping reduction-oxidation graphite with differential pulse voltametry under three-electrode system
The hac buffer of cadmium is carried out differential pulse volt-ampere at room temperature to the electrochemical response of cadmium by alkene/gold/cadmium trace sensor
Method test, scanning range are-0.8-- 0.5V, amplitude 20mA, pulse width 0.05s, pulse period 0.2s, obtain weight
The linear equation of the concentration variation and current signal of metal cadmium ion, according to minimum detection limit=3* detection blank sample standard
Difference/calibration curve slope, and then obtain chitosan obtained/N doping redox graphene/gold/cadmium trace sensor pair
The minimum detection limit of heavy metal cadmium ion.
It probes into the preparation process of step S1 N doping redox graphene, the mass ratio of graphene oxide and acetoxime
To prepared chitosan/N doping redox graphene/gold/cadmium trace sensor performance influence, embodiment 2-5 passes through
The mass ratio for changing the step S1 graphene oxide and acetoxime prepares chitosan/N doping redox graphene/gold/cadmium trace
The mass ratio of sensor, step S1 graphene oxide and acetoxime and corresponding chitosan/N doping reduction-oxidation obtained
Graphene/gold/cadmium trace sensor minimum detection limit is as shown in table 1.
The mass ratio and minimum detection limit of 1 graphene oxide of table and acetoxime
| Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| The mass ratio of graphene oxide and acetoxime | 1:0.2 | 1:0.6 | 1:1.0 | 1:1.5 |
| Minimum detection limit (× 10-10mol/L) | 1.58 | 1.13 | 0.91 | 0.98 |
As shown in Table 1: embodiment 2-5 chitosan/N doping redox graphene/gold/cadmium trace sensor preparation
In the process, under conditions of changing the step S1 graphene oxide and acetoxime mass ratio, the chitosan/N doping being prepared is restored
Graphene oxide/gold/cadmium trace sensor minimum detection limit changes therewith, this is because graphene oxide and acetoxime
Mass ratio influences the reduction and nitrating degree of graphene oxide, not only influences the ratio table of N doping redox graphene obtained
Area has an effect on the conductivity of N doping redox graphene, this is because N doping can increase electron density, increases conductance
Rate, and then increase response signal, minimum detection limit is reduced, embodiment 4 is most preferred embodiment as can be seen from Table 1, embodiment 4
The mass ratio of graphene oxide and acetoxime is 1:1.0.
Embodiment 6-9
Chitosan/N doping redox graphene/gold/cadmium trace sensor preparation method, includes the following steps:
The preparation of S1, N doping redox graphene: graphene oxide and acetoxime are dissolved separately in distilled water,
The mass ratio of graphene oxide and acetoxime is 1:1.0, and ammonium hydroxide is added and adjusts pH value of solution=10, condenses under 95 DEG C of constant temperatures
Flow back 15h, is washed to neutrality, is freeze-dried at subzero 50 DEG C, N doping redox graphene is prepared；
The preparation of S2, nano-Au solution: chlorauric acid solution is heated to boiling, and sodium citrate solution is added, continues to heat
60min, wherein the volume ratio of chlorauric acid solution and sodium citrate solution is 20:1, and the mass fraction of chlorauric acid solution is
0.02%, the mass fraction of sodium citrate solution is 2%, cooling, obtains nano-Au solution；
S3, the preparation for depositing liquid: acetic acid is added in nano-Au solution, the volume ratio of acetic acid and nano-Au solution is
100:10 is separately added into N doping redox graphene made from chitosan, caddy and step S1, wherein chitosan, chlorine
The mass ratio of N doping redox graphene made from cadmium and step S1 is 1:0.2:0.1, and uniform stirring 5h is prepared
Deposit liquid；
S4, chitosan/N doping redox graphene/gold/cadmium trace sensor preparation: step S3 is added to electricity
It solves in slot, using the mode of three electrodes using glass-carbon electrode as working electrode, saturation Ag/AgCl is reference electrode, supplemented by platinum electrode
Electrode is helped, deposits certain time under -1.2V voltage, the glass-carbon electrode being modified is added to the trimerization that concentration is 0.2mol/L
It is crosslinked 3h, dehydrated alcohol and deionized water washing in sodium radio-phosphate,P-32 solution, is added in edta solution and elutes, ethylenediamine
The concentration of tetrem acid solution be 0.3mol/L, elution time 7h, be prepared chitosan/N doping redox graphene/
Gold/cadmium trace sensor.
It probes into step S4 chitosan/N doping redox graphene/gold/cadmium trace sensor preparation process, sinks
The product time is to prepared chitosan/N doping redox graphene/gold/cadmium trace sensor performance influence, embodiment
6-9 prepares chitosan/N doping redox graphene/gold/cadmium trace sensor by changing the step the sedimentation time of S4, step
Rapid S4 sedimentation time and corresponding chitosan/N doping redox graphene/gold/minimum inspection of cadmium trace sensor obtained
It is as shown in table 2 to survey limit.
2 sedimentation time of table and minimum detection limit
| Embodiment 6 | Embodiment 7 | Embodiment 8 | Embodiment 9 | |
| Sedimentation time (s) | 180 | 200 | 210 | 220 |
| Minimum detection limit (× 10-10mol/L) | 1.35 | 0.93 | 0.74 | 0.87 |
As shown in Table 2: embodiment 6-9 chitosan/N doping redox graphene/gold/cadmium trace sensor preparation
In the process, under conditions of changing the step S4 sedimentation time, chitosan/N doping redox graphene/gold/cadmium for being prepared
The minimum detection limit of trace sensor changes therewith, this is because sedimentation time influences the heavy of the glassy carbon electrode surface being modified
The thickness of integrated membrane, with the extension of sedimentation time, the thickness of deposition film is bigger, chitosan obtained/N doping oxygen reduction fossil
Black alkene/gold/cadmium trace sensor minimum detection limit first reduces and increases afterwards, this is because: providing with the increase of thicknesses of layers
Ion blotting hole is increased, and response signal increases, and minimum detection limit reduces, however, when thicknesses of layers is excessively high, ethylenediamine tetrem
Acid solution cannot be introduced into inside film layer and be eluted in conjunction with cadmium ion, and electron transfer is caused to be hindered, when so that with deposition
Between extension, the thickness of deposition film is bigger, and chitosan obtained/N doping redox graphene/gold/cadmium trace sensor is most
Low detection limit first reduces to be increased afterwards, and embodiment 8 is most preferred embodiment as can be seen from Table 2, and the sedimentation time of embodiment 8 is
210s。
A, b are respectively N doping oxygen reduction fossil made from graphene oxide used in step S1 and step S1 in Fig. 2
The scanning electron microscope diagram of black alkene, as seen from Figure 2: N doping redox graphene is compared to oxygen made from step S1
Graphite alkene possesses bigger specific surface area and more folds, and bigger loading end can be preferably provided for Gold nanoparticle
Product.
Fig. 3 is the transmission electron microscope picture of nanogold particle made from step S2, as seen from Figure 3: receiving made from step S2
Rice gold particle particle size distribution is more uniform, in spherical, is uniformly dispersed, without apparent agglomeration.
Fig. 4 is chitosan made from step S4/N doping redox graphene/gold/cadmium trace sensor scanning electricity
Sub- microscope figure, as seen from Figure 4: chitosan made from step S4/N doping redox graphene/gold/cadmium trace passes
Sensor surfaces are more coarse, form a large amount of three-dimensional structures, possess biggish specific surface area, show ethylenediamine tetra-acetic acid elution at
Function.The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, and it is any
Those familiar with the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invents
Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. one kind is based on distributed heterogeneous space-data integration, which is characterized in that include the following:
Information collection and storage: including the heavy metal ion in water to essential information acquisition and Spatial information collection, essential information
Content information and blowdown information, the content of chromium ion in heavy metal ion content information are acquired with sensor, will be collected
Information input and storage；
Data processing: reprocessing the raw information of input, according to the extension of time, updates and improve water environment data,
And data are modified and edited as needed；
Inquiry is with retrieval: being agrment information system using GIS-Geographic Information System by GIS-Geographic Information System in conjunction with management information system
System provides the form of expression abundant, and the management space of expansion management information system simultaneously forms visual management information system, makes
Abstract data in management information system is established with geographical location and is contacted, realize simultaneously to space and attribute data carry out conveniently,
Flexibly, accurately inquiry and positioning；
Data output: the result of inquiry and data analysis result being shown on the computer screen, printed out by printer,
And report and thematic map output are provided for statistics, prediction and the function of evaluation.
2. according to claim 1 a kind of based on distributed heterogeneous space-data integration, which is characterized in that information is adopted
In collection and storing process, space distribution information includes the space distribution information of sewage draining exit and water body.
3. according to claim 1 a kind of based on distributed heterogeneous space-data integration, which is characterized in that in a huge sum of money
Belong in cadmium ion content information gathering process, utilizes chitosan/N doping redox graphene/gold/cadmium trace sensor pair
Heavy metal cadmium ion is acquired.
4. according to claim 3 a kind of based on distributed heterogeneous space-data integration, which is characterized in that shell is poly-
Sugar/N doping redox graphene/gold/cadmium trace sensor the preparation method comprises the following steps:
The preparation of S1, N doping redox graphene: graphene oxide and acetoxime are dissolved separately in distilled water, are added
Ammonium hydroxide adjusts pH value of solution=9-10, is condensed back 12-15h under 95 DEG C of constant temperatures, is washed to neutrality, freezes at subzero 50 DEG C
It is dry, N doping redox graphene is prepared；
The preparation of S2, nano-Au solution: chlorauric acid solution is heated to boiling, and sodium citrate solution is added, and continues to heat 30-
60min, it is cooling, obtain nano-Au solution；
S3, the preparation for depositing liquid: acetic acid is added in nano-Au solution, chitosan, caddy and step are then respectively adding
Deposition liquid is prepared in N doping redox graphene made from S1, uniform stirring 3-5h；
S4, chitosan/N doping redox graphene/gold/cadmium trace sensor preparation: it is heavy that step S3 is prepared
Hydrops is added in electrolytic cell, and using the mode of three electrodes using glass-carbon electrode as working electrode, saturation Ag/AgCl is reference electricity
Pole, platinum electrode are auxiliary electrode, are deposited under -1.2V voltage, and it is 0.2mol/L that the glass-carbon electrode being modified, which is added to concentration,
Sodium tripolyphosphate solution in be crosslinked 3h, washed using dehydrated alcohol, chitosan/N doping reduction-oxidation graphite be prepared
Alkene/gold/cadmium trace sensor.
5. according to claim 4 a kind of based on distributed heterogeneous space-data integration, which is characterized in that step S1
In the preparation process of N doping redox graphene, the mass ratio of graphene oxide and acetoxime is 1:0.2-1.5.
6. according to claim 4 a kind of based on distributed heterogeneous space-data integration, which is characterized in that the step
In rapid S2, the volume ratio of the chlorauric acid solution and sodium citrate solution is 20:1, and the mass fraction of chlorauric acid solution is
0.02%, the mass fraction of sodium citrate solution is 2%.
7. according to claim 4 a kind of based on distributed heterogeneous space-data integration, which is characterized in that the step
In rapid S2, the volume ratio of the acetic acid and nano-Au solution is 100:7-10, made from the chitosan, caddy and step S1
The mass ratio of N doping redox graphene is 1:0.2:0.1.
8. according to claim 4 a kind of based on distributed heterogeneous space-data integration, which is characterized in that the step
In rapid S4, it is added in edta solution and elutes after dehydrated alcohol washing, the concentration of edta solution is
0.3mol/L, elution time 5-7h.
9. according to claim 4 a kind of based on distributed heterogeneous space-data integration, which is characterized in that step S4
In chitosan/N doping redox graphene/gold/cadmium trace sensor preparation process, sedimentation time 180-220s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910494411.3A CN110274947A (en) | 2019-06-09 | 2019-06-09 | One kind being based on distributed heterogeneous space-data integration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910494411.3A CN110274947A (en) | 2019-06-09 | 2019-06-09 | One kind being based on distributed heterogeneous space-data integration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110274947A true CN110274947A (en) | 2019-09-24 |
Family
ID=67960533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910494411.3A Pending CN110274947A (en) | 2019-06-09 | 2019-06-09 | One kind being based on distributed heterogeneous space-data integration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110274947A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153078A (en) * | 2011-05-12 | 2011-08-17 | 西北大学 | Reduction method for graphene oxide |
| CN103699962A (en) * | 2013-12-06 | 2014-04-02 | 山东师范大学 | Soil environment quality information system |
| CN108802122A (en) * | 2018-06-14 | 2018-11-13 | 江苏大学 | A kind of preparation method of chitosan-graphene/gold nanoparticle@carbon nanotube ionic trace sensors |
| CN108918613A (en) * | 2018-06-22 | 2018-11-30 | 江苏大学 | Based on gold nanoparticle/graphite alkene/chitosan trace cadmium ion electrochemical sensor, preparation method and its usage |
-
2019
- 2019-06-09 CN CN201910494411.3A patent/CN110274947A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153078A (en) * | 2011-05-12 | 2011-08-17 | 西北大学 | Reduction method for graphene oxide |
| CN103699962A (en) * | 2013-12-06 | 2014-04-02 | 山东师范大学 | Soil environment quality information system |
| CN108802122A (en) * | 2018-06-14 | 2018-11-13 | 江苏大学 | A kind of preparation method of chitosan-graphene/gold nanoparticle@carbon nanotube ionic trace sensors |
| CN108918613A (en) * | 2018-06-22 | 2018-11-30 | 江苏大学 | Based on gold nanoparticle/graphite alkene/chitosan trace cadmium ion electrochemical sensor, preparation method and its usage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ma et al. | In situ mapping of activity distribution and oxygen evolution reaction in vanadium flow batteries | |
| Jia et al. | High‐Sensitivity Determination of Lead (II) and Cadmium (II) Based on the CNTs‐PSS/Bi Composite Film Electrode | |
| Lukaszewski et al. | Direct determination of ultratraces of thallium in water by flow-injection—differential-pulse anodic stripping voltammetry | |
| CN108398474B (en) | Potential microelectrode sensor for detecting ions in sediment and application thereof | |
| CN112525201B (en) | Underwater target tracking method based on electromagnetic field characteristic multi-information fusion | |
| CN106483184A (en) | Heavy metal analysis device and method based on graphene sensor | |
| CN106814319A (en) | A kind of lithium ion battery self discharge detecting system | |
| CN105572200B (en) | It is a kind of existing for ascorbic acid under the conditions of the detection modified glassy carbon electrode of dopamine, preparation method and application | |
| Zhang et al. | Porous GaN electrode for anodic stripping voltammetry of silver (I) | |
| CN110333276A (en) | A kind of highly integrated electrode of bismuth film and the preparation method and application thereof for fast detection of trace cadmium | |
| CN109725264A (en) | A kind of in-situ detection method and device of the distribution of electrode of liquid flow cell current density | |
| CN110274947A (en) | One kind being based on distributed heterogeneous space-data integration | |
| CN113030210B (en) | Preparation of carbon dot/bismuth film modified glassy carbon electrode and method for detecting cadmium and lead ions | |
| Zhang et al. | A sensing platform based on Cu-MOF encapsulated Dawson-type polyoxometalate crystal material for electrochemical detection of xanthine | |
| Schaap et al. | Resistance Compensation in Polarography. Application to High Resistance Nonaqueous Systems and to High Current-Density Aqueous Systems. | |
| CN205157400U (en) | Instantaneous corrosion rate sensor of soil electrochemistry | |
| CN109900760A (en) | A kind of preparation method and applications of the dopamine electrochemical sensor based on polyacid | |
| CN116758064A (en) | Lithium battery diaphragm quality detection method based on electron scanning microscope | |
| CN206862954U (en) | Food Portable heavy metal ion detection instrument instrument | |
| Xin et al. | Electrochemical performance of a new all solid-state ultra-low noise electrospray electrode as a marine electric field sensor | |
| CN205749387U (en) | A kind of electrochemical sensor comprising graphene modified electrode | |
| CN215005683U (en) | Deep sea optical cable fault detection device | |
| CN111707718B (en) | Functionalized black phosphorus-based modified enzyme-free sensor and preparation method and application thereof | |
| Huong et al. | Polymethylthiophene/Nafion-modified glassy carbon electrode for selective detection of dopamine in the presence of ascorbic acid | |
| CN106353383B (en) | A kind of sensor detecting hexafluorophosphoricacid acid ions |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190924 |
|
| RJ01 | Rejection of invention patent application after publication |