CN107328826A - A kind of portable ethanol detection means - Google Patents
A kind of portable ethanol detection means Download PDFInfo
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- CN107328826A CN107328826A CN201710672457.0A CN201710672457A CN107328826A CN 107328826 A CN107328826 A CN 107328826A CN 201710672457 A CN201710672457 A CN 201710672457A CN 107328826 A CN107328826 A CN 107328826A
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- China
- Prior art keywords
- graphite oxide
- titanium dioxide
- inductive reactance
- graphene
- ethanol
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 48
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 34
- 239000010439 graphite Substances 0.000 claims abstract description 34
- 230000001939 inductive effect Effects 0.000 claims abstract description 28
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 24
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 14
- 229910052719 titanium Inorganic materials 0.000 claims description 14
- 239000010936 titanium Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 229910000348 titanium sulfate Inorganic materials 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
-
- 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
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (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 Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The present invention provides a kind of portable ethanol detection means, the concentration applied to detection ethanol, it is characterised in that including inductive reactance, conventional resistive, variable resistor, heating wire, control circuit, power supply, shell and shift knob.The sensing resistor is prepared using titanium dioxide graphite oxide graphene trielement composite material, wherein titanium dioxide：Graphite oxide：The mass ratio of graphene is 1:20~100:0.05~0.2.The inductive reactance cost prepared using the method is low, is quick on the draw.This device manufacturing cost is low, and reaction is fast, and small volume can be easy to carry.
Description
Technical field
The present invention relates to a kind of gas-detecting device, more particularly to a kind of portable ethanol detection means.
Background technology
With the fast development of transportation, motor vehicle is increased rapidly with the personnel amount for possessing driving license, traffic
Accident frequently occurs.In China, every year because the traffic accident for initiation of driving when intoxicated reaches tens thousand of；And in murderous accident
More than 50% all with drive when intoxicated it is relevant.Extremely bad influence is caused to society, oneself and autre vie safety is endangered.At present,
Punishment to drunk driving and drunk driving is substantially strengthened, and every hundred milliliters of blood alcohol contents are more than 20 milligrams to drive when intoxicated, and are more than
80 milligrams are drink-driving.
At present, the main method of blood concentration of alcohol detection has the methods such as AAS, expiration method.Expiration method is due to being not required to
Want sample preprocessing, it is not necessary to venous blood samples and be widely used.Conventional equipment sensitivity is relatively low at present, during response
Between longer, inefficiency.
The content of the invention
Based on this, it is necessary to provide a kind of inexpensive device for fast detecting.
A kind of portable ethanol detection means, applied to detection ethanol concentration, it is characterised in that including inductive reactance,
Conventional resistive, variable resistor, heating wire, instrument board, control circuit, power supply, shell and shift knob.
Further, the sensing resistor is prepared using titanium dioxide-graphite oxide-graphene trielement composite material,
Wherein titanium dioxide：Graphite oxide：The mass ratio of graphene is 1:20~100:0.05~0.2.
Further, the heating wire is surrounded on outside inductive reactance, for being heated to inductive reactance, and its temperature range is 80
~ 120 degree.
Further, the control circuit is used to control detection means.
Further, the power supply is used to provide power supply to control circuit.
Further, the shift knob is used to control detection means.
Further, the preparation method of inductive reactance, comprises the following steps：
It is 1 in mass ratio by graphite oxide, titanium sulfate and ammoniacal liquor:0.02~0.5:5 ~ 20 are added to the water, and ultrasonic disperse formation contains
The suspension of graphite oxide and titanium dioxide；
By the suspension containing graphite oxide and titanium dioxide after deionized water washing and filtering, obtain being loaded with titanium dioxide
The graphite oxide of titanium；
Under the atmosphere of protective gas, the graphite oxide for being loaded with titanium dioxide is placed into the micro-wave oven of adjustable temperature
In, microwave power is 700 ~ 900W, irradiates 20min ~ 60min, and titanium dioxide-graphite oxide-graphene is obtained after cooling and is combined
Material；
Titanium dioxide-graphite oxide-the graphene composite material is mixed with deionized water, ground, it is compressing, and will be into
Sample after type places drying baker drying, that is, obtains the inductive reactance.
Further, by the solids being filtrated to get after the suspension containing graphite oxide and titanium dioxide is filtered
The graphite oxide that 24h ~ 48h obtains being loaded with titanium dioxide is dried in vacuo at 100 DEG C.
Further, the protective gas is selected from least one of argon gas and nitrogen.
Above-mentioned inductive reactance is by being 1 containing mass ratio:50:0.1 titanium dioxide-graphite oxide-graphene composite material group
Into, and can cause the change of electrical conductivity after titanium dioxide absorption ethanol, so as to which inductive reactance is applied into ethanol sensor
In to detect the concentration of ethanol；Because graphene is lamellar structure, and graphite oxide caking property, titanium dioxide is uniform and steady
Fixed is dispersed between the lamella of graphene, so that the sensitivity of inductive reactance is higher；Pass through electric-heating-wire-heating induced electricity
After resistance, can quick release absorption ethanol, for detecting again.
It is inexpensive the invention provides one kind is highly sensitive, simple in construction and stable, reusable ethanol detection dress
Put.
Brief description of the drawings
Fig. 1 is the structural representation of detection means in embodiment.
Fig. 2 is the circuit wiring structure schematic diagram of embodiment.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Many details are elaborated in the following description to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
A kind of portable ethanol detection means includes inductive reactance, conventional resistive, variable resistor, heating wire, instrument board, control
Circuit processed, power supply, shell and shift knob.Shown in Fig. 1, portable ethanol structure of the detecting device schematic diagram, the switch
200 and instrument board 300 be embedded in the surface of shell 100, the shell 100 is provided with the hole 110 for air blowing, the control electricity
Road is arranged inside the housing.Control circuit wiring structure schematic diagram is illustrated in figure 2, wherein R1, R2, R3, R4, R5 is definite value electricity
Resistance, Rx is variable resistor, and Rg is inductive reactance, and H is that heating wire, G are instrument board, and E is power supply, and K is switch.Fixed value resistance
R5 is connected with heating wire H, to adjust the power output of heating wire.
The preparation method of inductive reactance is as follows：
It is 10 in mass ratio by graphite oxide, titanium sulfate and ammoniacal liquor:0.2:5 are added to the water, and ultrasonic disperse formation contains oxidation stone
The suspension of ink and titanium dioxide；
By the suspension containing graphite oxide and titanium dioxide after deionized water washing and filtering, obtain being loaded with titanium dioxide
The graphite oxide of titanium；
Under the atmosphere of nitrogen, the graphite oxide for being loaded with titanium dioxide is placed into the micro-wave oven of adjustable temperature, it is micro-
Wave power is 900W, irradiates 30min, titanium dioxide-graphite oxide-graphene composite material is obtained after cooling；
Titanium dioxide-graphite oxide-the graphene composite material is mixed with deionized water, ground, be pressed into it is a diameter of
5mm, length are 20mm column, and the sample after shaping is placed on into vacuum drying baking 24h at 100 DEG C, that is, obtain the sense
Answer resistance.
Contain titanium dioxide-graphite oxide-graphene composite material, and titanium dioxide absorption ethanol in above-mentioned inductive reactance
The change of electrical conductivity can be caused afterwards, so as to which inductive reactance is applied in ethanol sensor to detect the concentration of ethanol；By
It is lamellar structure in graphene, titanium dioxide is uniformly dispersed between the lamella of graphene, so that the spirit of inductive reactance
Sensitivity is higher.
In present embodiment, for detecting that the circuit diagram of ethanol is as shown in Figure 2.In the circuit, inductive reactance is by containing matter
Amount is than being 1:50:0.1 titanium dioxide-graphite oxide-graphene composite material composition, when inductive reactance does not adsorb ethanol,
Matching resistor R1 and inductive reactance Rg initial resistance（I.e. unadsorbed ethanol when resistance）It is equal, and R1=Rg=R2=R4=250k
Ω.After inductive reactance has adsorbed ethanol, resistance Rg changes, and the electric current of ammeter G tests changes.According to advance survey
The corresponding relation between corresponding relation and resistance Rg and ammeter G readings between fixed concentration of alcohol and resistance Rg, so that
The concentration of ethanol can be calculated.
Further, according to the corresponding relation between the concentration of alcohol of measured in advance and resistance Rg and resistance Rg and electricity
Ammeter G reading, can be scaled the concentration of ethanol by the corresponding relation between flow table G readings, so that when bridge circuit is put
When in rich in alcoholic environment, the concentration of ethanol can be directly read according to ammeter G pointer offset position.
Further, regulation variable resistor Rx so that ammeter G pointers half when concentration of alcohol reaches 14 μ g/100ml
Partially, when concentration is more than 45 μ g/100ml, pointer is completely inclined.
In actually detected, switch get to K1, then connect detection means, against inflatable mouth blow more than 3 seconds time, when containing
The gas absorption of ethanol is in inductive reactance, and the resistance value of inductive reactance is to change, so as to cause control circuital current
Change, the corresponding concentration value by conversion can be read from instrument board；After the completion of detection, switch opens K2, then opens electric heating
Silk heating, because ethanol is hot volatilization gas, when temperature is heated to 80 degree, can quickly volatilize and depart from inductive reactance, detect
Device can be re-used for detection.
It should be noted that being not limited to detect ethanol content using the circuit shown in Fig. 2.
Embodiment described above only expresses one embodiment of the present invention, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of portable ethanol detection means, the concentration applied to detection ethanol, it is characterised in that including inductive reactance, often
Advise resistance, variable resistor, heating wire, instrument board, control circuit, power supply, shell and shift knob.
2. according to claim 1, the sensing resistor is prepared using titanium dioxide-graphite oxide-graphene trielement composite material,
Wherein titanium dioxide：Graphite oxide：The mass ratio of graphene is 1:20~100:0.05~0.2.
3. heating wire is surrounded on outside inductive reactance according to claim 1, for being heated to inductive reactance, its temperature range is
80 ~ 120 degree.
4. according to claim 1, the instrument board is used to show concentration of alcohol.
5. according to claim 1, the control circuit is used to control detection means.
6. according to claim 1, the power supply is used to provide power supply to control circuit.
7. according to claim 1, the shift knob is used to control detection means.
8. according to claim 1 and claim 2, the preparation method of inductive reactance comprises the following steps：
Graphite oxide, titanium sulfate and ammoniacal liquor are added to the water, suspension of the ultrasonic disperse formation containing graphite oxide and titanium dioxide
Liquid；
By the suspension containing graphite oxide and titanium dioxide after deionized water washing and filtering, obtain being loaded with titanium dioxide
The graphite oxide of titanium；
Under the atmosphere of protective gas, the graphite oxide for being loaded with titanium dioxide is placed into the micro-wave oven of adjustable temperature
In, microwave power is 700 ~ 900W, irradiates 20min ~ 60min, and titanium dioxide-graphite oxide-graphene is obtained after cooling and is combined
Material；
Titanium dioxide-graphite oxide-the graphene composite material is mixed with deionized water, ground, it is compressing, and will be into
Sample after type places drying baker drying, that is, obtains the inductive reactance.
9. according to claim 1 and claim 8, by after the suspension filtering containing graphite oxide and titanium dioxide incited somebody to action
Filter obtained solids and the graphite oxide that 24h ~ 48h obtains being loaded with titanium dioxide is dried in vacuo at 100 DEG C.
10. according to claim 1 and claim 8, the protective gas is selected from least one of argon gas or nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710672457.0A CN107328826A (en) | 2017-08-08 | 2017-08-08 | A kind of portable ethanol detection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710672457.0A CN107328826A (en) | 2017-08-08 | 2017-08-08 | A kind of portable ethanol detection means |
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| CN201710672457.0A Pending CN107328826A (en) | 2017-08-08 | 2017-08-08 | A kind of portable ethanol detection means |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108107085A (en) * | 2017-12-11 | 2018-06-01 | 何旭连 | A kind of portable ethyl alcohol detection device |
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