CN210401289U - Gas sensor for honey quality analysis - Google Patents
Gas sensor for honey quality analysis Download PDFInfo
- Publication number
- CN210401289U CN210401289U CN201921016274.4U CN201921016274U CN210401289U CN 210401289 U CN210401289 U CN 210401289U CN 201921016274 U CN201921016274 U CN 201921016274U CN 210401289 U CN210401289 U CN 210401289U
- Authority
- CN
- China
- Prior art keywords
- electrode
- gas
- nano
- heating
- layer
- 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.)
- Active
Links
Images
Abstract
The utility model discloses a gas sensor for honey quality analysis, gas sensor includes heating material layer (7), first heating electrode (5) and second heating electrode (6), insulating substrate (4), first test electrode (1) and four second test electrode (2), four gas sensing unit (3) that are the array and arrange that set gradually from the bottom up, first heating electrode (5), second heating electrode (6) respectively with heating material layer (7) electricity is connected, every gas sensing unit (3) respectively with first test electrode (1) and every second test electrode (2) electricity is connected. The utility model discloses the sensitive material that adopts has higher selectivity for the specially selected material to aldehyde, ketone, alcohol and ester in the honey volatile substance, and the signal specificity that acquires is more obvious, and the discrimination is higher, and the effect is better.
Description
Technical Field
The utility model belongs to the sensor field, in particular to gas sensor for honey quality analysis.
Background
The honey is a nutritional food beneficial to the health of human bodies, is also one of important additives in the field of food processing, is a traditional Chinese medicine, and the quality of the honey directly determines the beneficial degree of the human bodies and the quality of food processing products. The honey is taken as the secretion of the bees, and the great difference of the honey in smell and taste can be caused by the difference of bee species, flower species and honey collection time, so that how to adopt a convenient and effective technical means to realize the rapid analysis of the honey and the identification of the honey quality is one of the challenging problems in the field of honey quality analysis all the time.
The analysis method of honey is limited to chromatographic analysis and spectral analysis at present, and samples need to be pretreated, so that the operation is complex and the time consumption is long. The gas sensor has small in size, low cost's characteristics, detects to the gas molecule in the air specially, and the composition in the honey all belongs to volatile substance, utilizes gas sensor technique to detect the volatile substance composition of honey, combines follow-up data analysis and feature extraction, can acquire the smell characteristic fingerprint of honey, realizes the quality analysis to honey. However, the current commercial sensor is mostly used in the field of environmental monitoring to detect VOC, combustible gas and the like, and the current gas sensor has a broad-spectrum response characteristic, can respond to various gases, has an unobvious difference in response values, namely has poor selectivity to a single type of gas, and has a detection result that the content of various substances is difficult to distinguish.
Therefore, it is necessary to design a special gas sensor for detecting honey volatile matters, and the content of various substances in honey can be analyzed with high selectivity for various substances.
In order to solve the above problems, the present invention is provided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a gas sensor for honey quality analysis, the gas sensor comprises a heating material layer 7, a first heating electrode 5, a second heating electrode 6, an insulating substrate 4, a first testing electrode 1, four second testing electrodes 2 and four gas-sensitive units 3 which are arranged in an array arrangement and are arranged from the bottom to the top in sequence, the first heating electrode 5 and the second heating electrode 6 are respectively and electrically connected with the heating material layer 7, each gas-sensitive unit 3 is respectively and electrically connected with the first testing electrode 1 and each second testing electrode 2,
the four gas-sensitive units 3 are all nano semiconductor material layers, specifically, a nano titanium oxide particle layer, a nano tungsten oxide sheet layer, a nano tin oxide particle layer and a nano zinc oxide particle layer, and the four gas-sensitive units 3 are respectively selectively sensitive to aldehydes, ketones, alcohols and esters in honey volatile matters.
Preferably, the size of nano semiconductor material particles or sheets in the nano titanium oxide particle layer, the nano tungsten oxide sheet layer, the nano tin oxide particle layer and the nano zinc oxide particle layer is less than 40 nanometers. The nano material has extremely high surface activity and high response sensitivity.
The surface of the nano semiconductor material has a special structure, has great difference with the surface interaction activation energy of different gas molecules, and shows corresponding characteristics of high selectivity to different gas molecules.
The purpose of the heating material layer 7 is to achieve, among other things, that the sensor operates at a fixed temperature.
Preferably, the overall thickness of the gas sensor is not more than 2 mm, the plane size is less than 5 x 5 mm, and the space between four gas sensing units 3 is not more than 2 mm. Compact structure and uniform distribution of thermal field.
Preferably, the heating material layer is selected from ruthenium oxide layer, platinum layer and nickel layer, and the insulating substrate 4 is selected from alumina ceramic wafer and silicon wafer.
Preferably, the first test electrode 1, the second test electrode 2, the first heating electrode 5 and the second heating electrode 6 are all interdigital electrodes.
The utility model discloses the second aspect provides a preparation method of gas sensor for honey quality analysis, including following step:
A. arranging a first heating electrode 5 and a second heating electrode 6 on one surface of an insulating substrate 4, and arranging a first test electrode 1 and four second test electrodes 2 on the other surface;
B. arranging a heating material layer 7 on the first heating electrode 5 and the second heating electrode 6, so that the first heating electrode 5 and the second heating electrode 6 are respectively electrically connected with the heating material layer 7;
C. arranging four gas-sensitive units 3 in an array arrangement on the first test electrode 1 and the four second test electrodes 2, so that each gas-sensitive unit 3 is electrically connected with the first test electrode 1 and each second test electrode 2 respectively; the four gas-sensitive units 3 are all nano semiconductor material layers, specifically, a nano titanium oxide particle layer, a nano tungsten oxide sheet layer, a nano tin oxide particle layer, and a nano zinc oxide particle layer. The four gas sensitive units 3 are respectively sensitive to aldehydes, ketones, alcohols and esters in the honey volatile substance.
Preferably, the nano semiconductor material is prepared by a hydrothermal method, a solvothermal method, a water bath method, a sacrificial template method and an evaporation method.
Preferably, step a is a screen printing or electroplating method, and steps B and C are screen printing or ink jet printing methods.
Preferably, the first test electrode 1, the second test electrode 2, the first heating electrode 5, and the second heating electrode 6 are gold electrodes, where the first test electrode 1 is a common negative electrode of the electric signal measuring circuits of the 4 gas-sensitive units 3, the four second test electrodes 2 are positive electrodes of the electric signal measuring circuits of the 4 gas-sensitive units 3, respectively, the first heating electrode 5 is a negative electrode of the heating voltage of the heating material layer 7, and the second heating electrode 6 is a positive electrode of the heating voltage of the heating material layer 7; the electrode material may be a highly conductive composite material composed of platinum, silver, nickel, copper, carbon nanotubes, graphene, or the like.
A third aspect of the invention provides use of a gas sensor according to the first aspect in honey identification and analysis.
Preferably, the use is used for identifying and analyzing honey quality difference caused by bee species, production areas, flower collection varieties and flower collection periods.
Preferably, honey is treated according to the aldehydes, ketones, alcohols and esters in the honey volatiles. Identification and analysis
The method for testing the quality of the honey by using the gas sensor for honey quality analysis comprises the following steps:
A. voltage is applied to the first heating electrode 5 and the second heating electrode 6, the temperature of the heating material 7 rises, and finally the set working temperature of the sensor is kept constant.
B. The first testing electrode 1 and the four second testing electrodes 2 are connected with a measuring instrument, when the four gas-sensitive units contact volatile matters of honey, electric signal changes of sensitive materials in the gas-sensitive units can be caused, the four gas-sensitive units output signals are processed, the testing signals are converted into 4-dimensional fingerprint signals through calculation, fingerprint characteristics of a standard honey sample and a tested honey sample are compared by using a Principal Component Analysis (PCA) method of SPSS software, characteristic values are extracted, and the similarity degree is judged according to the distance of the falling point positions of the standard honey sample and the tested honey sample on a principal component load diagram, so that the quick analysis and the effective identification of the quality difference of the honey are realized.
The utility model discloses following beneficial effect has:
1. compared with the prior art, the utility model discloses a gas sensing technology has solved the unable honey quality analysis problem that realizes of current gas chromatography, infrared spectrum. Commercial gas sensors are broad-spectrum materials, can respond to a plurality of gases, and are basically non-selective. The utility model discloses the sensitive material that adopts has higher selectivity for the specially selected material to aldehyde, ketone, alcohol and ester in the honey volatile substance, and the signal specificity that acquires is more obvious, and the discrimination is higher, and the effect is better.
2. The sensor still have the characteristics that the analysis result is accurate, low cost, integrated level are high, miniaturized, but batch industrial production can provide a convenient analytical method for the quality analysis of honey.
3. The utility model provides a gas sensor of multiple volatile substance of integrated analysis, as long as need distinguish aldehyde, ketone, alcohols and ester compound's field fast, the homoenergetic obtains the application.
Drawings
Fig. 1 is a schematic view of an upper surface structure of a gas sensor according to embodiment 1 of the present invention.
FIG. 2 is a schematic view showing the arrangement of the upper surface test electrodes of the gas sensor according to example 1.
Fig. 3 is a schematic view of the lower surface structure of the gas sensor of embodiment 1.
FIG. 4 is a schematic view showing the arrangement of the lower surface heating electrodes of the gas sensor according to example 1.
FIG. 5 is a schematic sectional view of a gas sensor according to example 1;
FIG. 6 is an SEM topography and an EDS energy spectrum of the tin oxide nanoparticles prepared in example 2;
FIG. 7 is an SEM topography and an EDS energy spectrum of the titanium oxide nanoparticles prepared in example 2;
FIG. 8 is an SEM topography and an EDS energy spectrum of the zinc oxide nanoparticles prepared in example 2;
FIG. 9 is an SEM topography and an EDS energy spectrum of the tungsten oxide nanosheets prepared in example 2;
FIG. 10 is a fingerprint of the odor profile of a No. 1 honey sample;
FIG. 11 is a fingerprint of the odor profile of a No. 2 honey sample;
FIG. 12 is a fingerprint of the odor profile of a No. 3 honey sample;
FIG. 13 is a fingerprint of the odor profile of a No. 4 honey sample;
FIG. 14 is a fingerprint of the odor profile of a No. 5 honey sample;
FIG. 15 is a fingerprint of the odor profile of honey sample number 6;
FIG. 16 is a graph of the component loading of the results of the differentiation of 6 honey samples.
List of reference numerals:
1. the gas sensor comprises a first test electrode 2, a second test electrode 3, a gas sensitive unit 4, an insulating substrate 5, a first heating electrode 6, a second heating electrode 7 and a heating material.
Detailed Description
The present invention will be further described with reference to the following detailed description.
Example 1
As shown in fig. 1-5, the present invention provides a gas sensor for honey quality analysis, comprising a heating material layer 7, a first heating electrode 5 and a second heating electrode 6, an insulating substrate 4, a first testing electrode 1 and four second testing electrodes 2, four gas sensing units 3 arranged in an array, which are sequentially arranged from bottom to top, wherein the first heating electrode 5 and the second heating electrode 6 are respectively electrically connected with the heating material layer 7, each gas sensing unit 3 is respectively electrically connected with the first testing electrode 1 and each second testing electrode 2,
the four gas-sensitive units 3 are respectively a nano titanium oxide layer, a nano tungsten oxide layer, a nano tin oxide layer and a nano zinc oxide layer, and the four gas-sensitive units 3 are respectively sensitive to aldehydes, ketones, alcohols and esters.
The heating material layer 7 is a ruthenium oxide layer, the insulating substrate 4 is a ceramic wafer,
the first test electrode 1, the second test electrode 2, the first heating electrode 5 and the second heating electrode 6 are gold electrodes.
Example 2
The method for manufacturing a gas sensor for honey quality analysis according to embodiment 1, comprising the steps of:
s1, pretreatment of the insulating substrate: performing ultrasonic treatment on the ceramic wafer for 5-30 minutes by using ethanol, performing ultrasonic treatment on the ceramic wafer for 5-30 minutes by using deionized water, performing ultrasonic treatment on the ceramic wafer for 5-30 minutes by using ethanol, and drying the ceramic wafer at 40-80 ℃ to obtain an insulating substrate 4;
s2, printing of electrodes: respectively printing commercial conductive gold paste on the upper surface and the lower surface of the insulating substrate 4 by adopting a 350-mesh screen printing mode, as shown in fig. 2 and 4, after printing is completed, placing the printed conductive gold paste in an oven at 150 ℃ for baking for 20 minutes, then transferring the printed conductive gold paste into a muffle furnace to heat to 800 ℃ at a heating rate of 5 ℃ per minute for heat preservation for 10 minutes, and finally cooling to room temperature along with the oven to obtain a first test electrode 1,4 second test electrodes 2, a first heating electrode 5 and a second heating electrode 6, wherein one surface with the first test electrode 1 is regarded as the upper surface of the insulating substrate 4.
S3, printing of the heating material layer 7: printing a commercial ruthenium oxide paste to the lower surface of the insulating substrate 4 (see fig. 3) of S1 by adopting a 350-mesh screen printing manner, wherein the size of the paste is 3 × 3 mm, and the thickness of the paste is 4 micrometers;
s4, preparing organic slurry: the preparation method comprises the following steps of uniformly mixing terpineol, butyl carbitol acetate and dibutyl phthalate according to the mass ratio of 6:3:1, then respectively adding ethyl cellulose, span 85 and 1, 4-butyrolactone according to the mass ratio of 1:30, 1:25 and 1:100, and continuously stirring for 24 hours to obtain uniformly mixed organic slurry;
s5, preparing gas-sensitive film slurry: mixing tin oxide nanoparticles, titanium oxide nanoparticles, zinc oxide nanoparticles, tungsten oxide nanosheets and organic slurry obtained from S4 according to a mass ratio of 6:4, putting the mixture into an agate tank, adding 5 agate balls in each of large, medium and small sizes, covering the agate tank, putting the agate tank on a planetary ball mill for fixation, and performing ball milling at 350 r/min for 6 hours to obtain gas-sensitive film slurry of four gas-sensitive materials of tin oxide, titanium oxide, zinc oxide and tungsten oxide;
s6, printing of gas-sensitive materials: respectively printing four gas-sensitive film slurries on the upper surface of the insulating substrate 4 (see fig. 1) by adopting a 350-mesh screen printing mode, respectively arranging the four materials at 4 positions of the first measuring electrode 1, then transferring the insulating substrate 4 into a muffle furnace, heating to 500 ℃ at a heating rate of 5 ℃/min, preserving heat for 2 hours, cooling to room temperature along with the furnace, and obtaining a single gas-sensitive film on the prepared sensor with a typical size of 1 x 1 mm and a thickness of 4 microns, wherein the micro-morphology and components of the materials are shown in fig. 6-9.
The preparation method of the four semiconductor nanoparticles comprises the following steps:
A. preparation of tin oxide nanoparticles: adding stannic chloride (SnCl)2·2H2O) and pyridine according to 1: mixing the components in a mass-volume ratio (g: ml) of 50-1:200 into a uniform solution, adding absorbent cotton in a mass-volume ratio of 1:100-1:300, transferring the solution into a hydrothermal reaction kettle, reacting for 24 hours at 120 ℃, taking out a product after the reaction, repeatedly washing the product for 3-5 times by using deionized water and ethanol respectively, placing the cleaned product into a drying oven, preserving the temperature for 24 hours at 80 ℃, finally placing the product into a muffle furnace, and calcining for 3-5 hours at 500-800 ℃ to obtain a final product, namely tin oxide nanoparticles;
B. preparing titanium oxide nano particles: putting 1M glucose solution into a hydrothermal reaction kettle, reacting for 5-15 hours at 180 ℃, then transferring the solution into a centrifuge tube and putting into a centrifuge, centrifuging for 15-20 minutes at 4000 rpm, washing solids obtained by centrifuging for 3-5 times by using water and ethanol respectively, then putting into a vacuum furnace, drying at 80 ℃ to obtain micron carbon sphere powder, then mixing the micron carbon sphere powder and the ethanol according to the mass-volume ratio (g: ml) of 1:30-1:50, carrying out ultrasonic treatment for 30 minutes, then adding tetrabutyl titanate with the mass-volume ratio (g: ml) of 1:10-1:20, carrying out centrifugal separation after continuously stirring for 12 hours, repeatedly washing for 3 times by using ethanol, then standing the solids for 24 hours at room temperature, and finally transferring to a muffle furnace for 300-;
C. preparing zinc oxide nano particles: 1g of multi-walled carbon nanotubes was added to 100 ml of 0.1M zinc nitrate (ZnN)3O9) Ultrasonically stirring the solution for 15 to 30 minutes, centrifuging the solution for 15 to 20 minutes at 4000 revolutions, filtering and separating solid powder, drying the solid powder in a drying oven at 80 ℃ for 5 hours, transferring the dried solid powder into a muffle furnace, heating the dried solid powder to 350 ℃ firstly, preserving the heat for 3 to 5 hours, and then continuously heating the dried solid powder to 650 ℃ to calcine the solid powder for 10 to 20 minutes to obtain the final product zinc oxide nano-particles;
D. preparing tungsten oxide nanosheets: mixing tungsten chloride (WCl)6·6H2O) and BThe alcohol is as follows 1: 5-1:15, adding absorbent cotton in a mass-volume ratio (g: ml) of 1:10-1:30, standing at room temperature for 24 hours, taking out the absorbent cotton, putting the absorbent cotton into an oven to be dried at 80 ℃ for 48 hours, and transferring the absorbent cotton into a muffle furnace to be calcined at 300 ℃ and 700 ℃ for 3-5 hours to obtain the final product of the tungsten oxide nanosheet.
Example 3
The gas sensor prepared in example 2 was used to measure the volatile content of honey by the saturated headspace method. 2g of honey sample is placed in a gas washing bottle with the volume of 125 ml, after heat preservation is carried out for 15 minutes at 40 ℃, saturated steam in the gas washing bottle is taken out by introducing air, the flow rate is 100 ml/minute, the honey sample enters a testing cavity provided with the gas sensor prepared in the example 2 for detection, and the detection is repeated for 5 times for each honey sample.
Table 1 is a honey sample information table, and bee species, production areas and flowering time of 6 samples are different, wherein: samples No. 1-3 are wild dam honey produced by Italian bees and Chinese bees in different flowering time between 2016 + 2017, and the production place is Yunan Chuxiong Yao county; sample No. 4 is the honey from chong dam produced by the Chinese bee collecting in 2017 in 1 month, and the producing area is Yunnan Chuxiong Yao Ann county; sample No. 5 is litchi honey produced by Chinese bee in 2017 in 4 months, and the production place is Guangdong Chaozhou; sample No. 6 is Osmanthus fragrans Honey produced by Chinese bees collecting flowers in 2016 and 10 months, and the production place is Guangdong de-Yang.
TABLE 1 Honey sample information table
And calculating the respective resistances of the four gas sensitive units according to the voltage and the current of the circuit in which the four gas sensitive units are arranged. The stable basic resistance of the gas sensor in clean air is Ro, the lowest resistance value after the volatile components of honey are introduced is Rg, the response values R of the four gas-sensitive units to 6 honey samples are calculated to be R & ltRo/Rg-1 & gt, the four calculated response values are respectively listed as axes 1, 2, 3 and 4 according to the sequence that the gas-sensitive units are sequentially tin oxide, titanium oxide, zinc oxide and tungsten oxide, and a response value radar graph is drawn, namely the numerical values of the axes 1, 2, 3 and 4 are respectively equal to the response values R of the four gas-sensitive materials to the honey volatile matters. Every time of testing, every radar chart is connected into a quadrangle, every honey sample is repeatedly detected for 5 times, every radar chart is connected into 5 quadrangles, and the change trends of the 5 quadrangles are basically consistent.
10-15 are odor characteristic fingerprint images obtained by detecting honey sample Nos. 1-6 with a sensor, respectively, and the fingerprint shapes of the other honey samples are obviously different except that the fingerprint shapes of the sample Nos. 3 and 4 are relatively similar.
Furthermore, through a PCA principal component analysis method based on SPSS software, the odor fingerprint data is subjected to dimensionality reduction analysis, principal component factors are extracted, the first two principal component factors are taken to draw a component load graph (see FIG. 16), and the graph can be seen as follows:
(1) the falling points of No. 1-4 honey samples are all in the lower right half area of the load graph, and the falling points of No. 5 and No. 6 honey samples are in the upper half area of the load graph, so that obvious distinguishing differences exist, namely the gas sensor prepared by the method can realize effective distinguishing of honey of different flower picking varieties;
(2) although the falling points of the No. 1-3 damasco honey samples are in the lower right half area of a load graph, the samples are also obviously distinguished from each other, wherein the No. 1 and the No. 2 samples are apis mellifera honey of Dayao county in Chongxiong, Yunnan, the difference is that the flower picking period is 11 months and 2016 years 12 months respectively, the No. 2 sample and the No. 3 sample have the same production place and are extremely close to each other, but the bee species belong to apis cerana and apis cerana, namely, the sensor prepared by the method can effectively distinguish and distinguish the quality difference of the same honey caused by the bee species, the production place and the flower picking period;
(4) the contact point coincidence degree of the sample No. 4 and the sample No. 3 is high, the main difference of the two honey samples is in the producing area, but the county of Dayao and the county of Yao are adjacent, the geographical positions are extremely close, the geographical span is small, and therefore, the difference of the two honey samples is difficult to see under the condition that the bee species and the flowering season are the same.
Compared with the prior art, the utility model discloses a preparation is to 4 kinds of gas-sensitive units of honey volatile composition pertinence sensitivity, integrated miniature array sensor compact in size, directly detect the volatile gas of honey, need not to carry out complicated system appearance processing to the sample and can realize carrying out quick analysis and effective differentiation to the honey sample because of bee kind, the place of production, the flower variety is adopted, the honey quality difference that the flower season leads to of adopting carries out, the method low cost, it is quick to detect, good reproducibility, the manufacturing method is simple convenient, the difficult problem of honey quality analysis has been solved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. The gas sensor for honey quality analysis is characterized by comprising a heating material layer (7), a first heating electrode (5), a second heating electrode (6), an insulating substrate (4), a first testing electrode (1), four second testing electrodes (2) and four gas-sensitive units (3) which are arranged in an array mode, wherein the heating material layer (7), the first heating electrode (5), the second heating electrode (6), the insulating substrate (4), the first testing electrode (1), the four second testing electrodes (2) and the four gas-sensitive units (3) are sequentially arranged from bottom to top, the first heating electrode (5) and the second heating electrode (6) are respectively and electrically connected with the heating material layer (7), and each gas-sensitive unit (3) is respectively and electrically connected with the first testing electrode (1);
the four gas-sensitive units (3) are all nano semiconductor material layers, specifically a nano titanium oxide particle layer, a nano tungsten oxide sheet layer, a nano tin oxide particle layer and a nano zinc oxide particle layer.
2. The gas sensor of claim 1, wherein the nano-semiconductor material particles or flakes in the nano-titanium oxide particle layer, nano-tungsten oxide sheet layer, nano-tin oxide particle layer, or nano-zinc oxide particle layer have a size of less than 40 nanometers.
3. The gas sensor according to claim 1, wherein the overall thickness of the gas sensor is not more than 2 mm, the planar dimension is less than 5 x 5 mm, and the four gas sensing cells (3) are spaced from each other by not more than 2 mm.
4. Gas sensor according to claim 1, characterized in that the layer (7) of heating material is selected from the group consisting of ruthenium oxide layer, platinum layer, nickel layer and the insulating substrate (4) is selected from the group consisting of ceramic alumina wafer, silicon wafer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921016274.4U CN210401289U (en) | 2019-07-02 | 2019-07-02 | Gas sensor for honey quality analysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921016274.4U CN210401289U (en) | 2019-07-02 | 2019-07-02 | Gas sensor for honey quality analysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210401289U true CN210401289U (en) | 2020-04-24 |
Family
ID=70353964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921016274.4U Active CN210401289U (en) | 2019-07-02 | 2019-07-02 | Gas sensor for honey quality analysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210401289U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220946A (en) * | 2019-07-02 | 2019-09-10 | 云南中烟工业有限责任公司 | A kind of honey quality analysis gas sensor and its preparation method and application |
-
2019
- 2019-07-02 CN CN201921016274.4U patent/CN210401289U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220946A (en) * | 2019-07-02 | 2019-09-10 | 云南中烟工业有限责任公司 | A kind of honey quality analysis gas sensor and its preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106841325B (en) | One kind being based on semiconductor gas sensor array detection exhaled gas device | |
| CN105784787B (en) | A kind ofization sensitive resistor type gas sensor and its operating method | |
| US11624724B2 (en) | Gas-based method and device for diagnosing lung cancer using light-regulated electrochemical sensors | |
| CN1194227C (en) | Fast non-destructive detection method and device of food smell based on gas sensor array technology | |
| JP2017531163A (en) | Thin film resistance sensor | |
| CN210401289U (en) | Gas sensor for honey quality analysis | |
| CN107091860B (en) | Moisture sensor and its preparation and use based on the sour cyanines polymer in golden doping side | |
| CN106770522A (en) | A kind of electronic tongue system and detection method for detecting fruit juice purity | |
| CN110220946A (en) | A kind of honey quality analysis gas sensor and its preparation method and application | |
| CN103558262A (en) | Immunosensor pesticide residue detection method based on microarray electrode | |
| Maw et al. | A hybrid E-nose system based on metal oxide semiconductor gas sensors and compact colorimetric sensors | |
| Wang et al. | The recognition of different odor using convolutional neural networks extracted from time and temperature features | |
| CN107976469A (en) | A kind of soil nutrient device for fast detecting based on Artificial Olfactory | |
| CN106680355A (en) | Method for detecting sunset yellow in food by using carbon onion-loaded Pt nano particle composite material | |
| CN101235480A (en) | Method for preparing antimony-doping tin oxide thin film carrier material | |
| CN104422716B (en) | Preparation method of gas sensor gas sensitive film based on In2O3 nanowire | |
| RU2625543C2 (en) | Multi sensor gas analytical chip based on potassium titanate and method of its manufacture | |
| CN106918626B (en) | Dangerous atmosphere comprehensive state fingerprint identification method | |
| CN111474215A (en) | Semiconductor-solid electrolyte type dual-mode sensor and application thereof in gas identification | |
| CN209215343U (en) | A kind of Practice for Pesticide Residue in Agricultural Products detection device | |
| CN112946132A (en) | Chinese rose medicinal material fingerprint spectrum, construction method thereof and Chinese rose medicinal material quality detection method | |
| CN211505304U (en) | Device for identifying quality of tobacco extract | |
| CN108007961B (en) | Method for judging iron ore powder assimilation temperature based on electric signal change | |
| di Diodoro et al. | A ZnO-Based Automated Electronic Nose for VOCs Detection with High-Sensitivity Modulated Front-End Electronics | |
| CN111965217A (en) | Portable recovered oil detection device and detection analysis method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |