CN110041728A - A kind of biochrome rapidly extracting device - Google Patents
A kind of biochrome rapidly extracting device Download PDFInfo
- Publication number
- CN110041728A CN110041728A CN201910449471.3A CN201910449471A CN110041728A CN 110041728 A CN110041728 A CN 110041728A CN 201910449471 A CN201910449471 A CN 201910449471A CN 110041728 A CN110041728 A CN 110041728A
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- China
- Prior art keywords
- bottle
- output end
- cleaning
- biochrome
- pump
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B61/00—Dyes of natural origin prepared from natural sources, e.g. vegetable sources
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0096—Purification; Precipitation; Filtration
Abstract
The present invention relates to a kind of biochrome rapidly extracting devices, including syringe pump, Multi-channel switching valve, extraction unit, three-way magnetic valve, detection unit and cleaning unit, one output channel of the central passage Multi-channel switching valve of the output end connecting multi-channel switching valve of syringe pump connects extraction unit, the output end of extraction unit passes through three-way magnetic valve connecting detection unit, extraction unit includes sonicator, filter and fluid reservoir, detection unit includes spectrophotometer, mixer and process control pump, cleaning unit includes cleaning pump, acid washer bottle, alkaline washer bottle, distilled water washer bottle and air duct.For extraction element provided by the invention, it can be achieved that pigment is automatically extracted, detects and cleaned, the precision and efficiency for improving extraction, detecting reduce error caused by artificial operation, have saved the manpower and time investment of staff.
Description
Technical field
The invention belongs to phytochrome extractive technique fields, and in particular to a kind of biochrome rapidly extracting device.
Background technique
As the living standard of social progress sum improves, requirement of the people to the function and color of food is higher and higher, food
Demand of the conduct industry to natural food Agent is also higher and higher.From the colorant of food plant, with original plant
Major Nutrient function.There is colouring function again simultaneously.Pigment has beautiful bright-coloured color, and visual punching can be brought to people
It hits, the enjoyment on sense organ, psychological consolation, therefore is widely used in all trades and professions, such as industrial dye and food processing.
By sources pigment can be divided into artificial color and natural pigment.Artificial color refers to the pigment by chemical industry synthesis, can make to human body
At a degree of harm, for example, can induced hepatocellular carcinoma azo-compound 4- dimethyl azobenzene, natural pigment means driven
The pigment with stronger physiological activity extracted in object, plant and microorganism, substantially has no toxic side effect, safety compared with
It is high.
The processing of phytochrome is extracted, there is presently no the equipment of profession, mainly produce using pot group type, such as
Batch extractor, cooling and standings tank, solvent tank, finished product treatment tank and each evaporator etc., these equipment are all monomer setting, a procedure
The mode of batch turning need be taken to enter next process after the completion.That there is labor intensity of operating staff is big, solvent loss is high,
Water cannot be recycled, and production scale is small, product purity and quality are not easy the disadvantages of guaranteeing, and after the completion of extracting instrument cleaning
It need to be manually completed by staff, and sample liquid mixing and cleaning occupancy are longer between in real time, the substance in reagent and sample liquid directly connects
Touching has a certain impact to human body.
Summary of the invention
The problem of the purpose of the present invention is to solve proposed in background technique, and one kind is provided and automatically extracts, detect
With the biochrome rapidly extracting device of cleaning.
The object of the present invention is achieved like this:
A kind of biochrome rapidly extracting device, including syringe pump, Multi-channel switching valve, extraction unit, three-way magnetic valve,
Detection unit and cleaning unit, the central passage of the output end connecting multi-channel switching valve of the syringe pump, the multichannel are cut
The output channel connection extraction unit of valve is changed, the output end of the extraction unit passes through three-way magnetic valve connecting detection list
Member.
Further, the extraction unit includes sonicator, filter and fluid reservoir, the input of the filter
End connection sonicator, the output end of the filter connect fluid reservoir, and the output end of the fluid reservoir is separately connected more
Channel switching valve and three-way magnetic valve, the input terminal of the output end connection sonicator of the Multi-channel switching valve.
Further, the detection unit includes spectrophotometer, mixer and process control pump, the three-way magnetic valve
An output end connection spectrophotometer input terminal, the three-way magnetic valve another output connection mixer it is defeated
Enter end, the output end connection procedure of the mixer controls pump.
Further, the cleaning unit include cleaning pump, acid washer bottle, alkaline washer bottle, distilled water washer bottle and
Air duct, the sonicator in the input terminal connection extraction unit of the cleaning pump, the output end of the cleaning pump according to
The acid washer bottle of secondary connection, alkaline washer bottle and distilled water washer bottle, the acidity washer bottle, alkaline washer bottle, distilled water are clear
Wash bottle passes through triple valve with the output end of air duct and connects cleaning pump.
Further, the output channel of the Multi-channel switching valve is separately connected an at least sample solution bottle and at least one
A reagent bottle.
Further, the syringe pump, Multi-channel switching valve, extraction unit, three-way magnetic valve, detection unit and cleaning are single
It is connected by hose between member.
Further, the mixer is the spiral pipe that hose is coiled into.
Further, the output end of the detection unit connects waste liquid bottle, what the spectrophotometer and process control pumped
Output end connects waste liquid bottle by triple valve.
Further, the upper end of the waste liquid bottle connects gas-liquid separator, and the upper end of the gas-liquid separator sets out port.
Further, flowmeter is set in the connecting pipe of the fluid reservoir and three-way magnetic valve.
Further, the output end of the fluid reservoir, which is sequentially connected, is concentrated under reduced pressure tank and freeze-dryer, and the freezing is dry
Weighing sensor is set in dry device.
Further, the recovery rate of the pigment of extraction is
Y (%)=A/ka × V (V0/V1)×100×10-3/m0× 100%
Wherein A is absorbance, and k is absorption coefficient, and a is the distance (mm) that light passes through sample, V0For the volume of sample solution
(mL), m0For the particle dry weight (g) of sample, V1For the volume (mL) of pigment extract.
Further, the extracting method based on the biochrome rapidly extracting device, includes the following steps:
1. opening the triple valve of control distilled water bottle, cleaning pump extracts the distilled water in distilled water bottle, and distilled water cleaning mentions
Unit is taken, the input terminal of switching three-way solenoid valve, the fluid-through port and mixer that make extraction unit connects, and process control pump rotates forward,
Process control pumping takes the cleaning solution in extraction unit to be directly entered in waste liquid bottle by mixer.
2. syringe pump extracts a certain amount of sample solution or a certain amount of reagent enters in extraction unit, switching three-way electromagnetism
Valve is connected to the fluid-through port of extraction unit and the input terminal of mixer, and process control pump rotates forward, and process control pumping takes extraction unit
In mixed solution entered in mixer by the channel of three-way magnetic valve, mixed solution is during the helical flow of mixer
Mixing, process control pump reversion, mixed solution mix again during mixer helical flow and entrance extraction unit,
Process control pump rotate and reverse during mixed solution be uniformly mixed.
3. mixed solution is after mixing, into the cavity of extraction unit, process control pumping takes a certain amount of mixing
Solution enters in mixer, and switching three-way solenoid valve is connected to mixer with spectrophotometer, process control pump reversion, mixing
Mixed solution in device enters spectrophotometer, and spectrophotometer starts to detect work, can be iteratively repeated above-mentioned steps, continue to take out
It takes mixed solution to enter spectrophotometer and carries out repeated detection, obtain the absorbance of sample solution.
4. after the completion of detection, syringe pump is by control Multi-channel switching valve, by extraction solution pump remaining in extraction unit
Enter to be concentrated under reduced pressure in tank, solvent is removed after being concentrated under reduced pressure, is stored after freeze-dried device is dry.
5. after extracting, process control pump reversion, the whole mixed solutions extracted in mixer and spectrophotometer are arrived
In waste liquid bottle, switching three-way solenoid valve, process control pump is rotated forward, and process control pumping takes extra in extraction unit lumen body mix
Conjunction solution directly passes through mixer and enters in waste liquid bottle, and cleaning pump starts to be pumped into cleaning solution, and cleaning solution enters in extraction unit, mistake
Process control pumps while extracting the cleaning solution in extraction unit and entered in waste liquid bottle by mixer, extraction unit and mixer
After the completion of cleaning, switching three-way solenoid valve is connected to mixer with spectrophotometer, process control pump reversion, cleaning solution
It is cleaned into spectrophotometer, cleaning solution is directly entered in waste liquid bottle.
Compared with prior art, the beneficial effects of the present invention are:
1, a kind of biochrome rapidly extracting device provided by the invention, when can shorten broken by ultrasonic wave extraction
Between, accelerate broken speed, shorten extraction time, improve recovery rate；Physical reactions only occur for ultrasonic-leaching, can't change color
The bioactivity of element；By ultrasonic wave, promotes the molecule in liquid to gather to form biggish particle precipitating, accelerate effectively
The extraction of ingredient；The extract component of some pigments is affected by the high temperature larger, and can be dropped to this influence using ultrasonic wave
It is minimum.
2, a kind of biochrome rapidly extracting device provided by the invention, after the completion of detection and extraction, system can be voluntarily
It is cleaned, corresponding neutralization reaction can first be carried out according to the acid-base property of mixed solution automatically in cleaning process, then distilled
The cleaning of water keeps cleaning more thorough, washes out Liquid Residue sufficiently, instrument is not easy to be corroded, and prolongs the service life, and improves next time
The accuracy of extraction realizes the thorough cleaning to each component, has saved work using the mutual cooperation of process control pump and cleaning pump
Make the manpower and time investment of personnel.
3, a kind of biochrome rapidly extracting device provided by the invention, the extraction and detection to pigment are accurate, operation side
Just, the period is short, can automate progress from the cleaning for being mixed into instrument of sample liquid, can quickly be transferred to next task.
4, a kind of biochrome rapidly extracting device provided by the invention, can be pumped into sample solution and reagent, soil automatically
Sample solution and reagent realize automatic uniform mixing, sample under the repeated action of process control pump, extraction unit and mixer
The dosage of solution and reagent is controllable, reduces error caused by manual operation, improves the accuracy and efficiency of operation, pigment
Recovery rate is higher.
Detailed description of the invention
Fig. 1 is a kind of biochrome rapidly extracting apparatus structure schematic diagram of the present invention.
Fig. 2 is a kind of biochrome rapidly extracting device extraction unit work flow diagram of the present invention.
In figure: 1, syringe pump；2, tank is concentrated under reduced pressure；3, extraction unit；4, freeze-dryer；5, cleaning pump；6, cleaning is single
Member；7, triple valve；8, Multi-channel switching valve；9, sample solution bottle；10, reagent bottle；11, three-way magnetic valve；12, mixer；13,
Spectrophotometer；14, process control pumps；15, waste liquid bottle；16, gas-liquid separator；17, gas outlet；31, sonicator；
32, filter；33, fluid reservoir；61, acid solution bottle；62, alkaline solution bottle；63, distilled water bottle；64, air duct.
Specific embodiment
The technical scheme in the embodiment of the invention is clearly and completely described with reference to the accompanying drawing, it is clear that described
Embodiment be only a part of the embodiment of the present invention, rather than whole embodiments, based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without making creative work, belongs to protection of the present invention
Range.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of biochrome rapidly extracting device, including syringe pump 1, Multi-channel switching valve 8, extraction
Unit 3, three-way magnetic valve 11, detection unit and cleaning unit 6, the output end connecting multi-channel switching valve 8 of the syringe pump 1
Central passage, an output channel of the Multi-channel switching valve 8 connect extraction unit 3, and the output end of the extraction unit 3 is logical
Cross 11 connecting detection unit of three-way magnetic valve.
The extraction unit 3 includes sonicator 31, filter 32 and fluid reservoir 33, the input of the filter 32
End connection sonicator 31, the output end of the filter 32 connect fluid reservoir 33, the output end point of the fluid reservoir 33
The output end of other connecting multi-channel switching valve 8 and three-way magnetic valve 11, the Multi-channel switching valve 8 connects sonicator 31
Input terminal.
The detection unit includes spectrophotometer 13, mixer 12 and process control pump 14, the three-way magnetic valve 11
Output end connection spectrophotometer 13 input terminal, the another output of the three-way magnetic valve 11 connects mixer
12 input terminal, the output end connection procedure control pump 14 of the mixer 12.
The cleaning unit 6 includes cleaning pump 5, acid washer bottle 61, alkaline washer bottle 62, distilled water washer bottle 63 and sky
Gas channel 64, the input terminal of the cleaning pump 5 connect the sonicator 31 in extraction unit 3, the output of the cleaning pump 5
End is sequentially connected acid washer bottle 61, alkaline washer bottle 62 and distilled water washer bottle 63, the acidity washer bottle 61, alkalinity cleaning
The output end of bottle 62, distilled water washer bottle 63 and air duct 64 passes through triple valve 7 and connects cleaning pump 5.
The output channel of the Multi-channel switching valve 8 is separately connected at least a sample solution bottle 9 and at least one reagent
Bottle 10.
The syringe pump 1, Multi-channel switching valve 8, extraction unit 3, three-way magnetic valve 11, detection unit and cleaning unit 6
Between pass through hose connect.
The mixer 12 is the spiral pipe that hose is coiled into.
The output end of the detection unit connects waste liquid bottle 15, the output of the spectrophotometer 13 and process control pump 14
End connects waste liquid bottle 15 by triple valve 7.
The upper end of the waste liquid bottle 15 connects gas-liquid separator 16, and the upper end of the gas-liquid separator 16 sets out port 17.
Flowmeter is set in the connecting pipe of the fluid reservoir 33 and three-way magnetic valve 11.
The output end of the fluid reservoir 33, which is sequentially connected, is concentrated under reduced pressure tank 2 and freeze-dryer 4, the freeze-dryer 4
Inside set weighing sensor.
Embodiment 2
Based on the extracting method of the biochrome rapidly extracting device, include the following steps:
1. opening the triple valve 7 of control distilled water bottle 63, cleaning pump 5 extracts the distilled water in distilled water bottle 63, distilled water
Extraction unit 3 is cleaned, switching three-way solenoid valve 11 connect the fluid-through port of extraction unit 3 and the input terminal of mixer 12, process
Control pump 14 rotates forward, and the cleaning solution in 14 extraction extraction unit 3 of process control pump is directly entered waste liquid bottle by mixer 12
In 15.
2. syringe pump 1 extracts a certain amount of sample solution or a certain amount of reagent enters in extraction unit 3, switching three-way electricity
Magnet valve 11 is connected to the fluid-through port of extraction unit 3 and the input terminal of mixer 12, and process control pump 14 rotates forward, process control pump 14
The mixed solution extracted in extraction unit 3 is entered in mixer 12 by the channel of three-way magnetic valve 11, and mixed solution is mixing
It mixes during the helical flow of device 12,14 reversion of process control pump, mixed solution is mentioned in 12 helical flow of mixer and entering
It mixes during taking unit 3, is uniformly mixed in mixed solution during rotating and reverse of process control pump 14 again.
3. mixed solution is after mixing, into extraction unit 3, process control pump 14 extracts a certain amount of mixed solution
Into in mixer 12, switching three-way solenoid valve 11 is connected to mixer 12 with spectrophotometer 13, and process control pump 14 is anti-
Turn, the mixed solution in mixer 12 enters spectrophotometer 13, and spectrophotometer 13 starts to detect work, can be iteratively repeated
Step is stated, continues extraction mixed solution and enters the progress repeated detection of spectrophotometer 13, obtain the absorbance of sample solution.
4. after the completion of detection, syringe pump 1 is by control Multi-channel switching valve 8, by extraction solution remaining in extraction unit 3
It is pumped into and is concentrated under reduced pressure in tank 2, solvent is removed after being concentrated under reduced pressure, is stored after freeze-dried device 4 is dry.
5. after extracting, whole mixing in mixer 12 and spectrophotometer 13 are extracted in 14 reversion of process control pump
Solution is into waste liquid bottle 15, switching three-way solenoid valve 11, and process control pump 14 rotates forward, and process control pump 14 extracts extraction unit 3
In extra mixed solution directly pass through mixer 12 and enter in waste liquid bottle 15, cleaning pump 5 starts to be pumped into cleaning solution, cleaning solution into
Enter in extraction unit 3, process control pump 14 extracts the cleaning solution in extraction unit 3 simultaneously and enters waste liquid by mixer 12
In bottle 15, after the completion of 12 cleaning of extraction unit 3 and mixer, switching three-way solenoid valve 11 makes mixer 12 and light splitting light
13 connection of degree meter, 14 reversion of process control pump, cleaning solution enter spectrophotometer 13 and are cleaned, and cleaning solution is directly entered waste liquid
In bottle 15.
Embodiment 3
Spiral pipe made of hose coiling can be used in the mixer of detection unit, can also directly adopt helical form glass
Pipeline or vortex mixer, in sample liquid and the mixed process of reagent, the average time of manual operation mixing is 5min, this is
The average time that system mixes sample liquid and reagent is 1.5min, in the detection process, mean time needed for manual operation detects
Between be 5min, average time needed for this system detects is 3min, in the cleaning process to instrument, it is artificial clean needed for mean time
Between be 8 minutes, average time needed for cleaning of this system to instrument is 5min, by above data comparison it is found that the present invention is a kind of
Biochrome rapidly extracting device can reduce experiment the time it takes significantly, and the operation of systematization can reduce manual operation
Error, by taking pomegranate husk pigment as an example, Pomegranate Rind quality is 20g, and deionized water quality is 600g, and ultrasonic power is
540W, Extracting temperature are 40 DEG C, heating time 15min, extraction time 30min, the pigment mean light absorbency of manual operation
It is 2.351, the pigment mean light absorbency by this system is 3.011, and the pigment recovery rate of this system is higher than manual operation
0.25%, it follows that having greatly improved effect to the precision of extraction.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, all within the scope of the present invention
Any modification made, equivalent replacement etc. should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of biochrome rapidly extracting device, it is characterised in that: including syringe pump (1), Multi-channel switching valve (8), extract
Unit (3), three-way magnetic valve (11), detection unit and cleaning unit (6), the output end connecting multi-channel of the syringe pump (1)
One output channel of the central passage of switching valve (8), the Multi-channel switching valve (8) connects extraction unit (3), the extraction
The output end of unit (3) passes through three-way magnetic valve (11) connecting detection unit；
The extraction unit (3) includes sonicator (31), filter (32) and fluid reservoir (33), the filter (32)
Input terminal connect sonicator (31), the output end of the filter (32) connects fluid reservoir (33), the fluid reservoir
(33) output end is separately connected Multi-channel switching valve (8) and three-way magnetic valve (11), the output of the Multi-channel switching valve (8)
The input terminal of end connection sonicator (31)；
The detection unit includes spectrophotometer (13), mixer (12) and process control pump (14), the three-way magnetic valve
(11) another output of the input terminal of output end connection spectrophotometer (13), the three-way magnetic valve (11) connects
Connect the input terminal of mixer (12), the output end connection procedure control pump (14) of the mixer (12)；
The cleaning unit (6) includes cleaning pump (5), acid washer bottle (61), alkaline washer bottle (62), distilled water washer bottle
(63) and air duct (64), the input terminal of the cleaning pump (5) connect the sonicator (31) in extraction unit (3),
The output end of the cleaning pump (5) is sequentially connected acid washer bottle (61), alkaline washer bottle (62) and distilled water washer bottle (63),
The acidity washer bottle (61), alkaline washer bottle (62), distilled water washer bottle (63) and air duct (64) output end lead to
Cross triple valve (7) connection cleaning pump (5).
2. a kind of biochrome rapidly extracting device according to claim 1, it is characterised in that: the Multi-channel switching valve
(8) output channel is separately connected an at least sample solution bottle (9) and at least one reagent bottle (10).
3. a kind of biochrome rapidly extracting device according to claim 1, it is characterised in that: the syringe pump (1), more
Pass through hose between channel switching valve (8), extraction unit (3), three-way magnetic valve (11), detection unit and cleaning unit (6)
Connection.
4. a kind of biochrome rapidly extracting device according to claim 1, it is characterised in that: the mixer (12) is
The spiral pipe that hose is coiled into.
5. a kind of biochrome rapidly extracting device according to claim 1, it is characterised in that: the detection unit it is defeated
Outlet connects waste liquid bottle (15), and the output end of the spectrophotometer (13) and process control pump (14) is connected by triple valve (7)
Connect waste liquid bottle (15).
6. a kind of biochrome rapidly extracting device according to claim 5, it is characterised in that: the waste liquid bottle (15)
Upper end connects gas-liquid separator (16), and the upper end of the gas-liquid separator (16) sets out port (17).
7. a kind of biochrome rapidly extracting device according to claim 1, it is characterised in that: the fluid reservoir (33) and
Flowmeter is set in the connecting pipe of three-way magnetic valve (11).
8. a kind of biochrome rapidly extracting device according to claim 1, it is characterised in that: the fluid reservoir (33)
Output end, which is sequentially connected, is concentrated under reduced pressure tank (2) and freeze-dryer (4), sets weighing sensor in the freeze-dryer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910449471.3A CN110041728A (en) | 2019-05-28 | 2019-05-28 | A kind of biochrome rapidly extracting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910449471.3A CN110041728A (en) | 2019-05-28 | 2019-05-28 | A kind of biochrome rapidly extracting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110041728A true CN110041728A (en) | 2019-07-23 |
Family
ID=67283880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910449471.3A Pending CN110041728A (en) | 2019-05-28 | 2019-05-28 | A kind of biochrome rapidly extracting device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110041728A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148554A (en) * | 2015-09-11 | 2015-12-16 | 中国林业科学研究院林产化学工业研究所 | Device and method for extracting cape jasmine active matters by assistance of ultrasonic waves |
| CN206304393U (en) * | 2016-12-28 | 2017-07-07 | 陕西昂盛生物医药科技有限公司 | A kind of plant extract piece-rate system |
| CN108519334A (en) * | 2018-04-08 | 2018-09-11 | 河南农业大学 | A kind of soil nutrient automatic checkout system and detection method |
| CN109374390A (en) * | 2018-11-07 | 2019-02-22 | 河南农业大学 | A kind of absorption spectrum detection soil nutrient automixte system |
-
2019
- 2019-05-28 CN CN201910449471.3A patent/CN110041728A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105148554A (en) * | 2015-09-11 | 2015-12-16 | 中国林业科学研究院林产化学工业研究所 | Device and method for extracting cape jasmine active matters by assistance of ultrasonic waves |
| CN206304393U (en) * | 2016-12-28 | 2017-07-07 | 陕西昂盛生物医药科技有限公司 | A kind of plant extract piece-rate system |
| CN108519334A (en) * | 2018-04-08 | 2018-09-11 | 河南农业大学 | A kind of soil nutrient automatic checkout system and detection method |
| CN109374390A (en) * | 2018-11-07 | 2019-02-22 | 河南农业大学 | A kind of absorption spectrum detection soil nutrient automixte system |
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Application publication date: 20190723 |
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