CN209745944U - Device for rapidly detecting alcohol content in food - Google Patents

Device for rapidly detecting alcohol content in food Download PDF

Info

Publication number
CN209745944U
CN209745944U CN201920475434.5U CN201920475434U CN209745944U CN 209745944 U CN209745944 U CN 209745944U CN 201920475434 U CN201920475434 U CN 201920475434U CN 209745944 U CN209745944 U CN 209745944U
Authority
CN
China
Prior art keywords
sample
alcohol
volatilization chamber
power source
sensing system
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.)
Expired - Fee Related
Application number
CN201920475434.5U
Other languages
Chinese (zh)
Inventor
满都拉
葛根塔娜
孙子羽
万永青
李娜
崔占鑫
王瑞刚
段开红
陈忠军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Inner Mongolia Agricultural University
Original Assignee
Inner Mongolia Agricultural University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Inner Mongolia Agricultural University filed Critical Inner Mongolia Agricultural University
Priority to CN201920475434.5U priority Critical patent/CN209745944U/en
Application granted granted Critical
Publication of CN209745944U publication Critical patent/CN209745944U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Sampling And Sample Adjustment (AREA)

Abstract

The utility model relates to a device for rapidly detecting alcohol content in food. The device consists of an alcohol collecting and sampling system A and an alcohol sensing system B; the alcohol collection and sample introduction system A consists of a stirring power source (1), a sample volatilization chamber (2), a stirrer (3), a sample introduction piston (6), a sample introduction piston power source (7), a heating device (9) and a sample introduction switch (11); the alcohol sensing system B consists of an alcohol detection sensor (10), a microprocessor (15) and an alcohol sensing system interface (16); the utility model discloses the device can detect the alcohol content in liquid or solid-state food in short time, and the pretreatment is simple, and the survey is accurate, and low cost uses repeatedly, therefore is convenient for popularize and apply on a large scale.

Description

Device for rapidly detecting alcohol content in food
[ technical field ] A method for producing a semiconductor device
The utility model belongs to the technical field of food production. More specifically, the utility model relates to a device of alcohol content in short-term test food.
[ background of the invention ]
Alcohol (ethanol) is used as a flavor substance of alcoholic beverages and some beverages and foods, and the content thereof significantly affects the quality of the products. At present, the conventional detection method for the alcohol content in food comprises a gas chromatography and a specific gravity method. The gas chromatography method for detecting the alcohol content in the food is accurate, but the purchase of instruments and the pretreatment of samples are complex and need to be carried out by professional technicians. Although the hydrometer method is more economical and convenient than the gas chromatography, the hydrometer method also needs to be used for detecting the alcohol after distillation, and the accuracy of detecting trace alcohol in food is poor.
although CN201310464606, CN201110347261 and the like develop alcohol detection methods by using the principles of color development, color comparison and the like, they are high in cost and suitable for hospitals. The alcohol sensor can quickly convert alcohol concentration signals into electric signals, has the characteristics of high sensitivity, low cost, repeated utilization and the like, and is very suitable for detecting alcohol in food.
[ Utility model ] content
[ problem to be solved ]
The utility model aims at providing a device of alcohol content in short-term test food.
[ solution ]
The utility model is realized by the following technical proposal.
The utility model relates to a device for rapidly detecting alcohol content in food.
The device consists of an alcohol collecting and sampling system A and an alcohol sensing system B;
The alcohol collecting and sampling system A consists of a stirring power source 1, a sample volatilization chamber cover 2, a stirrer 3, a sample volatilization chamber 4, a sampling piston 6, a sampling piston power source 7, a heating device 9 and a sampling switch 11;
the sample volatilization chamber 4 is a cylindrical barrel body with a jacket; a sample volatilization chamber cover 2 is arranged on the upper opening of the sample volatilization chamber 4; the outer center of the sample volatilization chamber cover 2 is connected with a stirring power source 1, and the inner center of the sample volatilization chamber cover 2 is connected with a stirrer 3;
a sample introduction piston 6 is arranged in the sample volatilization chamber 4 and is connected with a sample introduction piston power source 7 through a sample introduction piston column 14; a sample introduction switch 11 is arranged at the upper part of the side wall of the sample volatilization chamber 4; a temperature probe 13 is arranged on the side wall of the sample volatilization chamber 4 between the sample injection piston 6 and the sample injection switch 11; a sample inlet 12 is arranged on the side wall of the sample volatilization chamber 4 between the sample inlet switch 11 and the upper opening of the sample volatilization chamber 4;
The alcohol sensing system B consists of an alcohol detection sensor 10, a microprocessor 15 and an alcohol sensing system interface 16;
the sample volatilization chamber 4 is connected with an alcohol sensing system interface 16 of the alcohol sensing system B through a sample introduction switch 11.
According to a preferred embodiment of the present invention, the alcohol detection sensor 10 of the alcohol sensing system B is a fuel cell type, semiconductor type or galvanic type electrochemical alcohol sensor.
according to another preferred embodiment of the present invention, the sample volatilization chamber 4 is a cavity made of stainless steel material and having a volume of 100-500 mL.
According to another preferred embodiment of the present invention, the heating means 9 is a heating wire or a steam system located in the jacket of the sample volatilization chamber 4, which enables the temperature of the sample volatilization chamber 4 to reach 40-80 ℃.
according to another preferred embodiment of the invention, the stirring power source 1 is manual or motor driven.
According to another preferred embodiment of the present invention, the feeding piston power source 7 is driven manually or by a motor.
According to another preferred embodiment of the present invention, the sample volatilization chamber cover 2 and the sample volatilization chamber 4 are in sealing connection by way of flange or screw thread loose joint.
According to another preferred embodiment of the present invention, the support 8 connects the sample volatilization chamber 4 to the base 17 in a vertical manner.
According to another preferred embodiment of the present invention, the sample introduction piston column 14 has a scale indicating the volume of the sample volatilization chamber 4.
According to another preferred embodiment of the present invention, the alcohol detecting sensor 10 is a fuel cell type, semiconductor type or galvanic electrochemical type sensor.
the present invention will be described in more detail below.
The utility model relates to a device for rapidly detecting alcohol content in food.
The device consists of an alcohol collecting and sampling system A and an alcohol sensing system B;
The alcohol collecting and sampling system A consists of a stirring power source 1, a sample volatilization chamber cover 2, a stirrer 3, a sample volatilization chamber 4, a sampling piston 6, a sampling piston power source 7, a heating device 9 and a sampling switch 11;
the sample volatilization chamber 4 is a cylindrical barrel body with a jacket; a sample volatilization chamber cover 2 is arranged on the upper opening of the sample volatilization chamber 4;
the sample volatilization chamber 4 is a barrel body made of stainless steel materials, and the volume of the barrel body is 100-500 mL. The sample volatilization chamber cover 2 is made of stainless steel material, and the sample volatilization chamber cover 2 and the sample volatilization chamber 4 are in movable connection by a commonly adopted flange or thread. Of course, a sealing groove may be provided in the sample volatilization chamber cover 2 at the portion contacting with the top of the sample volatilization chamber 4, and a sealing member is placed in the sealing groove to ensure that the sample and its volatile substance in the sample volatilization chamber 4 do not leak out. The seal is made of, for example, silicone or rubber material.
A heating device 9 is arranged in a jacket of the sample volatilization chamber 4, the heating device 9 is an electric heating wire or a water vapor system, and the temperature of the sample volatilization chamber 4 can reach 40-80 ℃.
The outer center of the sample volatilization chamber cover 2 is connected with a stirring power source 1, and the inner center of the sample volatilization chamber cover 2 is connected with a stirrer 3;
The stirring power source 1 is driven by hand or a motor, the motor used by the utility model is an alternating current motor, and the power of the alternating current motor is usually 150-200W; it is a product currently marketed, for example, by mons monster precision transmission equipment (shanghai) limited under the trade name of the soar motor. The manual driving can ensure that the equipment can be normally used when the power supply is not available. The stirrer 3 is a stirring device generally used in the art.
A sample introduction piston 6 is arranged in the sample volatilization chamber 4 and is connected with a sample introduction piston power source 7 through a sample introduction piston column 14;
The sample injection piston 6 and the sample injection piston column 14 are both made of stainless steel material. The sample injection piston 6 and the inner wall of the sample volatilization chamber 4 are sealed by silica gel or rubber material in a sealing ring mode; the sample introduction piston column 14 is marked with a scale on the column to display the volume of the volatilization chamber 4, so that the volume of the sample volatilization chamber 4 can be easily read by people from the scale.
the sample injection piston power source 7 is driven manually or by a motor, the motor used by the utility model is an alternating current motor, and the power of the alternating current motor is usually 150-200W; it is a product currently marketed, for example, by mons monster precision transmission equipment (shanghai) limited under the trade name of the soar motor. The use of manual actuation ensures that the device can be used without power.
A sample introduction switch 11 is arranged at the upper part of the side wall of the sample volatilization chamber 4; a temperature probe 13 is arranged on the side wall of the sample volatilization chamber 4 between the sample injection piston 6 and the sample injection switch 11;
The utility model discloses a sampling switch 11 is a ball valve switch, and it is the product of selling on the existing market, for example by funing county middle flying hydraulic valve factory with the product that the high-pressure American standard ball valve of trade name was sold. The utility model discloses a temperature probe 13 is platinum resistance temperature detector, and it is the product of selling on the market at present, for example by the product of selling with trade name temperature probe of gold spirit electron limited in the city of huizhou.
A sample inlet 12 is arranged on the side wall of the sample volatilization chamber 4 between the sample inlet switch 11 and the upper opening of the sample volatilization chamber 4; the sample inlet 12 is a feed inlet for feeding the food to be tested into the sample volatilization chamber 4. The diameter of the sample inlet 12 is 100-150 mm, and the sample inlet is sealed in a thread mode.
The alcohol sensing system B consists of an alcohol detection sensor 10, a microprocessor 15 and an alcohol sensing system interface 16;
The alcohol sensor 10 of the present invention is a fuel cell type, semiconductor type or galvanic cell type electrochemical alcohol sensor that is currently marketed, and these alcohol sensors are each provided with a corresponding microprocessor 15. The fuel cell type alcohol sensor is a fuel cell type alcohol sensor having a detection sensitivity of 115 + -85 mg/L, and is a product currently marketed, for example, by Zhengzhou Weisheng electronics, Inc., under the trade name of the fuel cell type alcohol sensor. The semiconductor type alcohol sensor has a detection sensitivity of 25 to 500ppm, and is a product currently sold in the market, for example, a product sold under the trade name of semiconductor type alcohol sensor by Zheng Wei Sheng electronic technology Limited. The galvanic cell type alcohol sensor is an alcohol sensor with detection sensitivity of 0-1.0 mg/L, and is a product sold in the current market, such as the product sold by Zhengzhou Weisheng electronic technology Limited under the trade name galvanic cell type alcohol sensor.
The sample volatilization chamber 4 is connected with an alcohol sensing system interface 16 of the alcohol sensing system B through a sample introduction switch 11. The utility model discloses a sampling switch 11 is a ball valve switch, and it is the product of selling on the existing market, for example funing county middle volitation hydraulic valve factory sells the product with trade name high-pressure American standard ball valve.
According to the utility model, the sample volatilization chamber 4 is connected with the base 17 into a whole in a vertical mode by the support 8. The bracket 8 is made of stainless steel, plastic or wood material.
Use the utility model discloses alcohol content detection device detects alcohol content method's step as follows:
Adding 100-1000 mg of sample to be detected into a sample volatilization chamber 5 from a sample inlet 12, closing a sample volatilization chamber cover 2 and the sample inlet 12, stirring and heating the sample to be detected to 30-90 ℃ by a heating device 9, volatilizing the sample to be detected, detecting and confirming that the sample is not volatilized any more by a method for detecting that the temperature in the sample volatilization chamber reaches a set temperature, then opening a sample injection switch 11, starting a sample injection piston power source 7, driving a sample injection piston 6 to send the sample into an alcohol sensing system B for detection, and calculating the alcohol content in the sample to be detected according to the detection result.
[ advantageous effects ]
The utility model has the advantages that:
Firstly, the utility model discloses utilize sensor technology to detect the well alcohol content of food, it is simple to have the pretreatment, measures accurate advantage.
Secondly, the utility model discloses the sample volatilizees room 2 and can guarantee that ethanol volatilizees fully to all volatilize ethanol and all send alcohol sensing system B to through sampling device, thereby guarantee the accuracy that detects.
Third, the utility model discloses all components and parts simple structure, low cost, consequently the device is with low costs and can use repeatedly, consequently is convenient for popularize and apply on a large scale.
[ description of the drawings ]
FIG. 1 is a schematic structural view of the device for rapidly detecting alcohol content in food according to the present invention;
in the figure:
1-stirring power source; 2-sample evaporation chamber lid; 3-a stirrer; 4-a sample volatilization chamber; 5-interlayer; 6-sample injection piston; 7-sample injection piston power source; 8-a scaffold; 9-a heating device; 10-alcohol detection sensor; 11-sample introduction switch; 12-a sample inlet; 13-temperature probe; 14-sample introduction piston column; 15-microprocessor, 16-alcohol sensing system interface; a base 17.
[ detailed description ] embodiments
The invention will be better understood by the following examples.
Example 1: the utility model discloses alcohol content device in short-term test food
The implementation of this example is as follows:
the device consists of an alcohol collecting and sampling system A and an alcohol sensing system B;
the alcohol collecting and sampling system A consists of a stirring power source 1, a sample volatilization chamber cover 2, a stirrer 3, a sample volatilization chamber 4, a sampling piston 6, a sampling piston power source 7, a heating device 9 and a sampling switch 11;
the sample volatilization chamber 4 is a cylindrical barrel body with a jacket, which is made of stainless steel material, the volume of the barrel body is 240mL, and an electric heating wire heating device 9 is arranged in the jacket, so that the temperature of the sample volatilization chamber 4 reaches 40 ℃; a sample volatilization chamber cover 2 made of stainless steel materials is arranged at the upper opening of the sample volatilization chamber 4 in a flange loose joint mode; the outer center of the sample volatilization chamber cover 2 is connected with a motor-driven stirring power source 1 with the power of 150W sold by Fukun precision transmission equipment (Shanghai) Limited company under the trade name of a Feiteng motor, and the inner center of the sample volatilization chamber cover 2 is connected with a stirrer 3; the stirrer 3 is driven by a motor-driven stirring power source 1 with 150W sold by Funus pelumu precision transmission equipment (Shanghai) Limited company under the trade name of a Feiteng motor to drive the stirrer 3 to stir;
a sample introduction piston 6 made of stainless steel material is arranged in the sample volatilization chamber 4 and is connected with a motor sample introduction piston power source 7 with the power of 150W sold by the Funus pelumu precision transmission equipment (Shanghai) Limited company under the trade name of a Feiteng motor through a sample introduction piston column 14; a sample introduction switch 11 is arranged at the upper part of the side wall of the sample volatilization chamber 4; a platinum resistance temperature probe 13 which is sold by Jinyuanxiang Electron Limited of Huizhou is arranged on the side wall of the sample volatilization chamber 4 between the sample injection piston 6 and the sample injection switch 11; a sample inlet 12 is arranged on the side wall of the sample volatilization chamber 4 between the sample inlet switch 11 and the upper opening of the sample volatilization chamber 4;
the alcohol sensing system B consists of a fuel cell type alcohol sensor 10 which is produced by Zhengzhou weisheng electronic technology limited and has a measuring range of 0-1.0 mg/L, a microprocessor 15 and an alcohol sensing system interface 16;
the sample volatilization chamber 4 is connected with an alcohol sensing system interface 16 of the alcohol sensing system B through a sample introduction switch 11.
the alcohol content in beer mash is detected by adopting the alcohol content detection method described in the specification. Through a standard curve established by alcohol solution, 10mL of beer mash is obtained from beer enterprises at the same time, alcohol detection is carried out according to the same method, and the alcohol content of the beer mash is 1.5 percent according to the detection result through the standard curve.
Example 2: the utility model discloses alcohol content device in short-term test food
The embodiment of this example is the same as that of example 1 except that the agitator 3 is driven by the manual agitation power source 1 to perform agitation; the sample injection piston 6 is driven by a manual sample injection piston power source 7; the volume of the sample volatilization chamber 4 is 400mL, and a water vapor system heating device 9 is arranged in a jacket of the sample volatilization chamber 4; the sample volatilization chamber cover 2 is arranged on the upper opening of the sample volatilization chamber 4 in a threaded movable connection mode; the alcohol sensing system B uses a semiconductor-type alcohol sensor 10 produced by zhengzhou weisheng electronics technology limited to detect a concentration in the range of 25 to 500 ppm;
the sorghum fermented grains obtained from the Mengzhou Xiongfeng chateau were examined by the alcohol content examination method described in this specification. Alcohol detection was performed by the same method by establishing a standard curve using 20g of fermented grains and 10mL of water as a solution, and the alcohol content of the fermented grains was 1.2% by the standard curve.
Example 3: the utility model discloses alcohol content device in short-term test food
The embodiment of this example is the same as that of example 1 except that the agitator 3 is driven by a motor agitation power source 1 of 200W sold under the trade name of the soar motor by mons monster precision transmission equipment (shanghai) ltd to agitate; the sample injection piston 6 is driven by a motor sample injection piston power source 7 with the power of 200W sold by Funus precision transmission equipment (Shanghai) Limited company under the trade name of a Feiteng motor; the sample volatilization chamber 4 is a cylindrical barrel body with a jacket, which is made of stainless steel materials, the volume of the barrel body is 500mL, and an electric heating wire heating device 9 is arranged in the jacket of the sample volatilization chamber 4; the sample volatilization chamber cover 2 is arranged on the upper opening of the sample volatilization chamber 4 in a flange way; the alcohol sensing system B uses a fuel cell type alcohol sensor 10 which is produced by Zhengzhou weisheng electronic technology limited and has a measuring range of 0-1.0 mg/L;
the method for detecting the alcohol content described in the specification is adopted to detect a vinegar mash yellow sample obtained by self-fermentation. The result was obtained by a standard curve, and the alcohol content of the fermented vinegar was 2.5%.
example 4: the utility model discloses alcohol content device in short-term test food
The embodiment of this example is the same as that of example 1 except that the stirrer 3 is driven by a motor stirring power source 1 of 150W sold under the trade name of Feiteng motor by Shibatang precision Transmission Equipment (Shanghai) Co., Ltd; the sample injection piston 6 is driven by a motor sample injection piston power source 7 with the power of 150W sold by Funus precision transmission equipment (Shanghai) Limited company under the trade name of a Feiteng motor; the sample volatilization chamber 4 is a cylindrical barrel body with a jacket, which is made of stainless steel materials, the volume of the barrel body is 500mL, and an electric heating wire heating device 9 is arranged in the jacket of the sample volatilization chamber 4; the sample volatilization chamber cover 2 is arranged on the upper opening of the sample volatilization chamber 4 in a threaded movable connection mode; the alcohol sensing system B uses a galvanic cell type electrochemical alcohol sensor 10 which is produced by Zhengzhou weisheng electronic technology limited and has a measuring range of 0-1.0 mg/L;
the alcohol content detection method described in the specification is adopted to detect white spirit samples purchased from markets. After 0.010ml of white spirit sample is added with 50ml of water and detected according to the method, the result is obtained through a standard curve, and the alcohol content of the white spirit is 51.3 percent.

Claims (10)

1. A device for rapidly detecting the alcohol content in food is characterized in that the device consists of an alcohol collecting and sampling system (A) and an alcohol sensing system (B);
The alcohol collection and sample introduction system (A) consists of a stirring power source (1), a sample volatilization chamber cover (2), a stirrer (3), a sample volatilization chamber (4), a sample introduction piston (6), a sample introduction piston power source (7), a heating device (9) and a sample introduction switch (11);
the sample volatilization chamber (4) is a cylindrical barrel body with a jacket; a sample volatilization chamber cover (2) is arranged on the upper opening of the sample volatilization chamber (4); the outer center of the sample volatilization chamber cover (2) is connected with the stirring power source (1), and the inner center of the sample volatilization chamber cover (2) is connected with the stirrer (3);
a sample introduction piston (6) is arranged in the sample volatilization chamber (4) and is connected with a sample introduction piston power source (7) through a sample introduction piston column (14); a sample introduction switch (11) is arranged on the upper part of the side wall of the sample volatilization chamber (4); a temperature probe (13) is arranged on the side wall of the sample volatilization chamber (4) between the sample injection piston (6) and the sample injection switch (11); a sample inlet (12) is arranged on the side wall of the sample volatilization chamber (4) between the sample injection switch (11) and the upper opening of the sample volatilization chamber (4);
The alcohol sensing system (B) consists of an alcohol detection sensor (10), a microprocessor (15) and an alcohol sensing system interface (16);
The sample volatilization chamber (4) is connected with an alcohol sensing system interface (16) of the alcohol sensing system (B) through a sample injection switch (11).
2. The device according to claim 1, characterized in that the alcohol detection sensor (10) of the alcohol sensing system (B) is a fuel cell type, semiconductor type or galvanic electrochemical type alcohol sensor.
3. The device according to claim 1, wherein the sample volatilization chamber (4) is a cavity with a volume of 100-500 mL made of stainless steel material.
4. The device according to claim 1, characterized in that the heating means (9) are electric heating wires or water vapor systems located in the jacket of the sample volatilization chamber (4) and capable of bringing the temperature of the sample volatilization chamber (4) to 30-80 ℃.
5. The device according to claim 1, characterized in that the stirring power source (1) is manual or motor-driven.
6. The device according to claim 1, characterized in that the sample injection piston power source (7) is manually or motor driven.
7. the device according to claim 1, characterized in that the sample evaporation chamber cover (2) and the sample evaporation chamber (4) are in sealing connection by means of flange or threaded loose joint.
8. A device according to claim 3, characterized in that the support (8) integrates the sample volatilization chamber (4) in a vertical manner with the base (17).
9. the device according to claim 1, characterized in that the sample introduction piston column (14) has a scale indicating the volume of the sample volatilization chamber (4).
10. The device according to claim 1, characterized in that the alcohol detection sensor (10) is a fuel cell type, semiconductor type or galvanic electrochemical type alcohol sensor.
CN201920475434.5U 2019-04-10 2019-04-10 Device for rapidly detecting alcohol content in food Expired - Fee Related CN209745944U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920475434.5U CN209745944U (en) 2019-04-10 2019-04-10 Device for rapidly detecting alcohol content in food

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920475434.5U CN209745944U (en) 2019-04-10 2019-04-10 Device for rapidly detecting alcohol content in food

Publications (1)

Publication Number Publication Date
CN209745944U true CN209745944U (en) 2019-12-06

Family

ID=68720449

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920475434.5U Expired - Fee Related CN209745944U (en) 2019-04-10 2019-04-10 Device for rapidly detecting alcohol content in food

Country Status (1)

Country Link
CN (1) CN209745944U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109828088A (en) * 2019-04-10 2019-05-31 内蒙古农业大学 The device of alcohol content in a kind of quick detection food

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109828088A (en) * 2019-04-10 2019-05-31 内蒙古农业大学 The device of alcohol content in a kind of quick detection food

Similar Documents

Publication Publication Date Title
CN103424448A (en) Method for detecting trace ochratoxin A (OTA) by adopting electrochemical aptamer sensor
CN106769978B (en) Fermentation tank tail gas in-line analyzer
CN102944598A (en) Preparation method and application of cell based sensor based on electrochemical reduction graphite oxide/gold nanoparticle composite membrane
CN106290537B (en) The method for detecting L-type Tryptophan concentration in solution
CN111855753B (en) On-site detection kit and detection method for vibrio parahaemolyticus in water body
CN209745944U (en) Device for rapidly detecting alcohol content in food
CN108776160B (en) Method that is a kind of while detecting bisphenol-A and bisphenol S
CN104330452B (en) A kind of screen printing electrode of soft material modification and preparation method and application
CN110823970A (en) Electrochemical detection method for rapidly determining content of L-cystine in acidic solution
CN101825603A (en) Current enzyme electrode for detecting catalase-positive bacteria and preparation method thereof
CN105891309B (en) The method for detecting L-type Tryptophan concentration in solution
CN109828088A (en) The device of alcohol content in a kind of quick detection food
CN110716020A (en) White spirit impurity is identification device independently based on machine learning
CN101825621A (en) Device for detecting activity of stored grain and method thereof
CN109900767A (en) A method of utilizing Electrochemical Detection chicken freshness
CN1023154C (en) Soil moisture measuring gauge with double-electrodes fixed in fields
CN101710116B (en) Method for determining trace terramycin by utilizing molecularly imprinted immunosensor
CN204925008U (en) Microbial fermentation ethanol concentration on -line measuring device
EP3001193A1 (en) System for characterisation of pure and ultrapure water
CN103267792B (en) Intelligent chemical analysis system for distinguishing detection of weak electrolyte sample and method therefor
CN206248606U (en) A kind of measuring electrode for detecting uric acid
CN113155926A (en) Biological sensing system for detecting uric acid level in saliva and application thereof
CN106290538B (en) The method for detecting D type Tryptophan concentration in solution
CN201045613Y (en) Chemical composition detector
CN106923605A (en) The intelligent wineglass of methanol content in a kind of detection wine

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191206

CF01 Termination of patent right due to non-payment of annual fee