CN201293761Y - Detector for agricultural product noxious residual substance - Google Patents
Detector for agricultural product noxious residual substance Download PDFInfo
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- CN201293761Y CN201293761Y CNU2008200727938U CN200820072793U CN201293761Y CN 201293761 Y CN201293761 Y CN 201293761Y CN U2008200727938 U CNU2008200727938 U CN U2008200727938U CN 200820072793 U CN200820072793 U CN 200820072793U CN 201293761 Y CN201293761 Y CN 201293761Y
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Abstract
The utility model discloses an agricultural product harmful residue detector based on color sensor and chemical colorimetric principle, which overcomes high application cost and band expansibility. The detector is composed of a detection box and a main control computer, wherein the detection box is connected with the main control computer via an RS232C serial communication interface; the detection box is divided into an upper box and a lower box; a necessary detection container and an agent are arranged in the upper box; the lower box is divided into a detection tool region and a color detection region; the detection tool region arranges necessary detection cools; the color detection region arranges color a sensor comprising a detection light source, four photoelectric sensors, a single chip, detection holes and the like; the detection light source is composed of red, green, blue and yellow light emitting diodes; the four light emitting diodes and the four photoelectric sensors are oppositely mounted at two sides of the detection holes; the single chip is connected with the main control computer via an RS232C serial communication interface; and the main control computer is a notebook computer with control software.
Description
Technical field
The utility model relates to a kind of hazard residue substance detecting apparatus, and more particularly, it relates to a kind of agricultural product hazard residue material detector.
Background technology
The violated agricultural chemicals of excessive use and long-term a large amount of chemical fertilizer that use, the agriculture production environment severe contamination is caused in the capital, foodsafety to the mankind constitutes a threat to, and presses for practical technique with low cost, easy to use, as can to carry out field quick detection agricultural product hazard residue material.Mostly this type of detecting instrument is special-purpose at present, mainly based on residues of pesticides, chromatography is mainly used in the detection of residues of pesticides, but this class detection method needs large-scale instrument and equipment and need the professional and technical personnel to operate, and is not suitable for on-the-spot the detection and the screening of batch samples.Survey the acetylcholinesterase methods of using for quick pesticide residue quality inspection more, utilize organophosphorus can suppress cholinesterase, make it lose the activity of decomposing acetylcholine,, but just whether contain organophosphorus in the judgement sample by the decomposition product of inspection acetylcholine or other ester type compound.The shortcoming of this method is that the activity of different enzyme source categories and different batches product enzyme there are differences, secondly need must temperature in enzyme reaction, difference appearred in analysis result when enzymatic activity was subjected to Temperature Influence serious, be difficult to guarantee on-the-spot accuracy and the reliability that detects, also have the problem of use cost height, extendability difference.Because the diversity of agricultural product hazard residue material has proposed new requirement to the extendability of detecting instrument, the utility model just is being based on that such requirement proposes.
Summary of the invention
Technical problem to be solved in the utility model is to have overcome the problem that prior art exists, and a kind of agricultural product hazard residue material detector that is suitable for field quick detection based on color sensor and chemical colorimetric principle is provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: agricultural product hazard residue material detector is made up of detection case and two parts of main control computer, is connected by the RS232C serial communication interface between detection case and the main control computer.
Described detection case is made up of top box and two parts of nowel, inner indispensable detection vessel and the reagent placed of top box, nowel inside is divided into testing tool district and color detection district, indispensable testing tool is placed in the testing tool district, the color sensor (14) that detects the testing liquid color is placed in the color detection district, and the single-chip microcomputer in the color sensor is connected with main control computer by the RS232C serial communication interface that can realize data acquisition and transmission.
What described main control computer adopted is the notebook that Control Software is installed.
Color sensor described in the technical scheme comprises controlling circuit of voltage regulation, detection light source, detection hole, photoelectric sensor, A/D change-over circuit, single-chip microcomputer and RS232C interface.Single-chip microcomputer is electrically connected with controlling circuit of voltage regulation, the output terminal of controlling circuit of voltage regulation is electrically connected with the input end of detection light source, the output terminal of photoelectric sensor is electrically connected with the input end of A/D change-over circuit, the output terminal of A/D change-over circuit is electrically connected with the receiving terminal of single-chip microcomputer, input/output terminal on the single-chip microcomputer is installed the RS232C serial communication interface that can realize data acquisition and transmission, single-chip microcomputer is connected with main control computer by the RS232C serial communication interface, and one of installation is used for having in the plug-in mounting detection hole of the colorimetric bottle of testing liquid between detection light source and photoelectric sensor; Described detection light source is made up of four light emitting diodes that can send red, green, blue, Huang Si kind color respectively, and four light emitting diodes are to detect the relative one by one installation in both sides, hole with four photoelectric sensors; The described indispensable vessel that detect have pipettor suction nozzle, filter paper box, color comparison tube, volumetric flask, pen clip, conical flask, transfer pipet, pipettor suction nozzle and funnel; Described reagent has NaOH, sulfuric acid, potassium permanganate, sodium nitrate, ammonium chloride and palladium bichloride; Described indispensable testing tool has No. 1 pipettor, No. 2 pipettors, color comparison tube jack, colorimetric bottle and pretreatment columns.
Compared with prior art the beneficial effects of the utility model are:
The utility model adopts color sensor and the chemical colorimetry technology that combines, the test item favorable expandability, and it is low, easy to operate to detect cost, and pick-up unit is simple in structure, is suitable for field quick detection.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is a detection case top box internal placement schematic block diagram in the agricultural product hazard residue material detector;
Fig. 2 is a detection case nowel internal placement schematic block diagram in the agricultural product hazard residue material detector;
Fig. 3 is the structural principle schematic block diagram of agricultural product hazard residue material detector;
Fig. 4 utilizes agricultural product hazard residue material detector to detect the FB(flow block) of agricultural product hazard residue content of material and kind;
Among the figure: 1. pipettor suction nozzle (3ml), 2. filter paper box, 3. color comparison tube (25ml), 4. volumetric flask (50-100ml), 5. pen clip, 6. conical flask (50ml), 7. transfer pipet (10ml), 8. pipettor suction nozzle (5ml), 9. funnel, 10.1 number pipettor (1-5ml), No. 11.2 pipettors (100-500 microlitre), 12. color comparison tube jacks, 13. colorimetric bottle, 14. color sensor, 15. detect hole, 16. pretreatment columns.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in detail:
The front had said that mostly the detecting instrument that detects agricultural product hazard residue material was special-purpose, mainly based on residues of pesticides, chromatography is mainly used in the detection of residues of pesticides, but this class detection method needs large-scale instrument and equipment and needs the professional and technical personnel to operate, and is not suitable for the screening of on-the-spot detection and batch samples.Survey the acetylcholinesterase methods of using for quick pesticide residue quality inspection, this for various reasons method is difficult to guarantee on-the-spot accuracy and the reliability that detects more, also has the problem of use cost height, extendability difference.So press for utility device with low cost, easy to use, as can to carry out field quick detection agricultural product hazard residue material.
The utility model has proposed a kind of agricultural product hazard residue material detector based on color sensor and chemical colorimetric principle.It has promptly overcome the deficiency that chromatography exists, and has overcome the shortcoming that the acetylcholinesterase method exists again; It promptly can detect the residues of pesticides material, can detect the Nitrates material again.Agricultural product hazard residue material detector described in the utility model is made up of two parts of detection case and main control computer, is connected realization data acquisition and transmission by the RS232C serial communication interface between detection case and the main control computer.The detector of this structure uses, transportation is all very convenient, during use both are linked together by the RS232C serial communication interface, both can not separate the time spent, main control computer (notebook) can move and use it for anything else, if there is main control computer (notebook) destination, the staff can only be with detection case to get final product in the past.
Detection case is divided into top box and two parts of nowel, top box inside is mainly used in places indispensable vessel and the reagent of detecting, and detecting vessel has: specification is that pipettor suction nozzle 1, filter paper box 2, the specification of 3ml is that the color comparison tube 3 of 25ml, volumetric flask 4, pen clip 5, the specification that specification is 50ml-100ml are the conical flask 6 of 50ml, the transfer pipet 7 that specification is 10ml, pipettor suction nozzle 8 and the funnel 9 that specification is 5ml; Reagent has: NaOH, sulfuric acid, potassium permanganate, sodium nitrate, ammonium chloride and palladium bichloride.Nowel inside is divided into testing tool district and color detection district.The indispensable instrument that detects is mainly placed in the testing tool district, as: specification is that No. 1 pipettor 10, the specification of 1-5ml is No. 2 pipettors 11, color comparison tube jack 12, colorimetric bottle 13 and the pretreatment column 16 of 100-500 microlitre.The color detection district is mainly used in detects the testing liquid color.Color sensor 14 is the main bodys in color detection district, and it comprises controlling circuit of voltage regulation, detection light source, detection hole 15, photoelectric sensor, A/D change-over circuit, single-chip microcomputer, RS232C interface.Single-chip microcomputer is electrically connected with controlling circuit of voltage regulation, the output terminal of controlling circuit of voltage regulation is electrically connected with the input end of detection light source, the output terminal of photoelectric sensor is electrically connected with the input end of A/D change-over circuit, the output terminal of A/D change-over circuit is electrically connected with the receiving terminal of single-chip microcomputer, input/output terminal on the single-chip microcomputer is installed the RS232C serial communication interface that can realize data acquisition and transmission, single-chip microcomputer just is connected with main control computer by this RS232C serial communication interface, and one of installation is used for having in the plug-in mounting detection hole 15 of the colorimetric bottle 13 of testing liquid between detection light source and photoelectric sensor.Wherein detection light source is made up of four light emitting diodes that can send red, green, blue, Huang Si kind color respectively, and four light emitting diodes are to detect the relative one by one installation in both sides, hole with four photoelectric sensors.
What main control computer adopted is the notebook that Control Software is installed.Certainly use desk-top computer also to be fine.And use notebook more can embody the portable performance of this instrument.
During detection, with being housed, the colorimetric bottle 13 that leaves standstill the testing liquid sample behind the 5min puts into the detection hole 15 of color sensor 14, the illumination of four kinds of colors that four light emitting diodes send successively is mapped on the testing liquid, and see through testing liquid and received successively by corresponding four photoelectric sensors, after the single-chip microcomputer rough handling, by the output of color sensor RS2 32C interface R (red), G (green), B (indigo plant), four color values of Y (Huang).Main control computer (notebook) carries out data analysis according to four color values of R, G, B, Y that obtain with neural net method, provides analysis result.Because the kind of testing liquid or the difference of concentration, under the effect of corresponding developer, can present different colors, therefore after the corresponding relation between the kind of setting up testing liquid and concentration and color detection value, can realize the measurement of agricultural product hazard residue material concentration to be measured and kind.
Illustrate application of the present utility model below:
1) detects preceding the preparation
Omethoate standard solution (10mg/mL): get the 2.5mL missible oil of omethoate in the volumetric flask 4 of 100mL, with the scale of distilled water diluting to 100mL.
Omethoate uses solution (50 μ g/mL): get 1mL omethoate standard solution, with 200 times of distilled water dilutings, promptly get and use liquid.This solution contains 50 μ g omethoates for every milliliter, now joins during use.
NaOH solution (1%): accurately take by weighing 1.0gNaOH in the volumetric flask 4 of 100mL, add the scale that water is settled to 100mL.
Sulfuric acid (3.75mol/L): the 20mL concentrated sulphuric acid is slowly added in the entry, be diluted to 100mL.
Potassium permanganate (0.1g/L): accurately take by weighing potassium permanganate 0.01g in the volumetric flask 4 of 100mL, add the scale that water is settled to 100mL.
Pretreatment column: interior dress 0.5g chromatography neutral alumina, a small amount of absorbent cotton is filled in the column bottom.
2) operation steps
1. vegetables wash-out: choose representational vegetables blade 1-2 sheet, about 5g notices that blade surface wants smooth nothings damaged, puts into plastic pallet, adding 10mL distilled water, and vegetables wash-out 5min repeatedly overturns.
2. filter: eluent is removed impurity wherein through pretreatment column 16, collects filtrate in 25mL color comparison tube 3, and is to be measured.
3. colour developing: in the color comparison tube 3 that fills liquid to be measured, add 10mLNaOH solution hydrolysis 1min, add the 0.3mL sulfuric acid solution then successively, the 0.1mL liquor potassic permanganate, mixing adds water to 25mL, leaves standstill 5min behind the mixing.
4. detect: use agricultural product hazard residue material detector detecting at the testing liquid that 3. step obtained.During detection, with being housed, the colorimetric bottle 13 that leaves standstill the testing liquid sample behind the 5min puts into the detection hole 15 of color sensor 14, the illumination of four kinds of colors that four diodes send successively is mapped on the testing liquid, and see through testing liquid and received successively by corresponding four photoelectric sensors, after the single-chip microcomputer rough handling, by color sensor RS232C interface (this interface is electrically connected with single-chip microcomputer in the color sensor) output R, G, four color values of B, Y.Main control computer (notebook) carries out data analysis according to four color values of R, G, B, Y that obtain with neural net method, provides analysis result.
1) detects preceding the preparation
Rogor standard solution (10mg/mL): get the 2.5mL dimethoate emulsifiable concentrate in the volumetric flask 4 of 100mL, with the scale of distilled water diluting to 100mL.
Rogor uses solution (50 μ g/mL): get 1mL Rogor standard solution, with 200 times of distilled water dilutings, promptly get and use liquid.This solution contains 50 μ g Rogor for every milliliter, now joins during use.
NaOH solution (1%): accurately take by weighing 1.0gNaOH in the volumetric flask 4 of 100mL, add the scale that water is settled to 100mL.
Sulfuric acid (3.75mol/L): the 20mL concentrated sulphuric acid is slowly added in the entry, be diluted to 100mL.
Potassium permanganate (0.1g/L): accurately take by weighing potassium permanganate 0.01g in the volumetric flask 4 of 100mL, add the scale that water is settled to 100mL.
Pretreatment column: interior dress 0.5g chromatography neutral alumina, a small amount of absorbent cotton is filled in the column bottom.
2) operation steps
1. vegetables wash-out:
Choose representational vegetables blade 1-2 sheet, about 5g, the attention blade surface wants smooth nothing damaged, puts into plastic pallet, adds 10mL distilled water, and vegetables wash-out 5min repeatedly overturns.
2. filter: eluent is removed impurity wherein through pretreatment column 16, collects filtrate in 25mL color comparison tube 3, and is to be measured.
3. colour developing: in the color comparison tube 3 that fills liquid to be measured, add 10mL NaOH solution hydrolysis 1min, add the 0.3mL sulfuric acid solution then successively, the 0.1mL liquor potassic permanganate, mixing adds water to 25mL, leaves standstill 5min behind the mixing.
4. detect: use agricultural product hazard residue material detector detecting at the testing liquid that 3. step obtained.During detection, with being housed, the colorimetric bottle 13 that leaves standstill the testing liquid sample behind the 5min puts into the detection hole 15 of color sensor 14, the illumination of four kinds of colors that four diodes send successively is mapped on the testing liquid, and see through testing liquid and received successively by corresponding four photoelectric sensors, after the single-chip microcomputer rough handling, by color sensor RS232C interface (this interface is electrically connected with single-chip microcomputer in the color sensor) output R, G, four color values of B, Y.Main control computer (notebook) carries out data analysis according to four color values of R, G, B, Y that obtain with neural net method, provides analysis result.
1) detects preceding the preparation
Sodium nitrate solution (100mg/Kg): take by weighing 0.01g sodium nitrate in the volumetric flask 4 of 100mL, add the scale that water is settled to 100mL.
20% alcohol-water: be settled to 100mL after accurately measuring 20.4mL absolute ethyl alcohol thin up.
0.1mol/L hydrochloric acid: be settled in the 1L volumetric flask behind the 8.4mL concentrated hydrochloric acid thin up.
Solution I: take by weighing 0.2g sulfanilamide (SN), put into the volumetric flask 4 of the 100mL that fills 80mL water, heating for dissolving on boiling water bath.Cooling back (filtering in case of necessity) adds the 10mL concentrated hydrochloric acid, and water is settled to the scale of 100mL, keeps in Dark Place.
Solution II: take by weighing the volumetric flask 4 that the 0.1g hydrochloride naphthodiamide is put into 100mL, be settled to the scale of 100mL after being dissolved in water, keep in Dark Place.
Solution III: measure the volumetric flask 4 that the 44.5mL concentrated hydrochloric acid is put into 100mL, add the scale that water is settled to 100mL.
Ammonia damping fluid (pH9.6): take by weighing 3.74g ammonium chloride and be dissolved in about 90mL water, regulate pH to 9.6, be diluted with water to 100mL again with strong aqua.
2) operation steps
1. vegetables are broken and extract: put into homogenizer after with scissors sample being shredded, add 20% alcohol-water that has configured in right amount, equal quality sample, sample slurries behind the homogeneous are moved in the volumetric flask of 100mL, wash homogenizer three times with 20% alcohol-water simultaneously, washing fluid moves into volumetric flask in the lump, shakes up lixiviate 2min behind the constant volume.Get the sample slurries after the lixiviate of individual layer filtered through gauze, the cotton-shaped organic matter of carrying secretly in the elimination sample slurries, stand-by.
2. decolouring:, the sample slurries of handling well are passed through pretreatment column 16, but depigmentation and impurity with the alumina filled pretreatment column 16 of 5g acticarbon+2g.
3. reduction: with transfer pipet pipette the 2. the liquid 10mL that obtains of step in 50mL conical flask 6, add 5mL distilled water, 5mL ammonia damping fluid (making cumulative volume reach 20mL) and 2g cadmium grain (filter paper suck dry moisture) are built bottle stopper, vibration 5min, filtration is collected in the volumetric flask 4 of 50mL.
4. colour developing: being equipped with, add solution I 5mL, add solution III 3mL again, mixing in the 3. in the volumetric flask of the liquid that obtains of step.Place room temperature shading place, add solution II 1mL again, mixing, water is settled to the scale of 50mL behind the 3min, measures in 15min.
5. detect: use agricultural product hazard residue material detector to detect, during detection, with being housed, the colorimetric bottle 13 at the testing liquid sample that 4. step obtained that leaves standstill behind the 5min puts into the detection hole 15 of color sensor 14, the illumination of four kinds of colors that four diodes send successively is mapped on the testing liquid, and see through testing liquid and received successively by corresponding four photoelectric sensors, after the single-chip microcomputer rough handling, by color sensor RS232C interface (this interface is electrically connected with single-chip microcomputer in the color sensor) output R, G, four color values of B, Y.Main control computer (notebook) carries out data analysis according to four color values of R, G, B, Y that obtain with neural net method, provides analysis result.
Embodiment 4, pesticide variety identification
1) preparation of solution
1. pesticide sample:
Rogor solution (50 μ g/mL), omethoate solution (50 μ g/mL), acephatemet solution (50 μ g/mL) compound method are the same.
2. palladium chloride solution (0.2%), hydrochloric acid (0.1%) are respectively applied for colour test.
2) operation steps
1. the preparation of pesticidal solutions: the agricultural chemicals on agricultural chemicals to be measured or the vegetables is mixed with solution.
2. colour developing: draw the 1mL testing liquid and put into 25mL color comparison tube 3, add 2mL HCl solution successively, the 0.5mL palladium chloride solution, mixing adds water to 25mL, leaves standstill 2min behind the mixing.
3. detect: the colorimetric bottle 13 that the testing liquid sample behind the reaction 2min will be housed places the detection hole 15 of agricultural product hazard residue material detector to use the kind identification modules to detect.During detection, the illumination of four kinds of colors that four diodes send successively is mapped on the testing liquid, and see through testing liquid and received successively by corresponding four photoelectric sensors, through after the single-chip microcomputer rough handling, export R, G, four color values of B, Y by color sensor RS232C interface (this interface is electrically connected with single-chip microcomputer in the color sensor).Main control computer (notebook) carries out data analysis according to four color values of R, G, B, Y that obtain, and provides analysis result.
Claims (4)
1. agricultural product hazard residue material detector is characterized in that agricultural product hazard residue material detector is made up of detection case and two parts of main control computer, is connected by the RS232C serial communication interface between detection case and the main control computer;
Described detection case is made up of top box and two parts of nowel, inner indispensable detection vessel and the reagent placed of top box, nowel inside is divided into testing tool district and color detection district, indispensable testing tool is placed in the testing tool district, the color sensor (14) that detects the testing liquid color is placed in the color detection district, and the single-chip microcomputer in the color sensor (14) is connected with main control computer by the RS232C serial communication interface that can realize data acquisition and transmission;
What described main control computer adopted is the notebook that Control Software is installed.
2. according to the described agricultural product hazard residue of claim 1 material detector, it is characterized in that described color sensor (14) comprises controlling circuit of voltage regulation, detection light source, detection hole (15), photoelectric sensor, A/D change-over circuit, single-chip microcomputer and RS232C interface;
Single-chip microcomputer is electrically connected with controlling circuit of voltage regulation, the output terminal of controlling circuit of voltage regulation is electrically connected with the input end of detection light source, the output terminal of photoelectric sensor is electrically connected with the input end of A/D change-over circuit, the output terminal of A/D change-over circuit is electrically connected with the receiving terminal of single-chip microcomputer, input/output terminal on the single-chip microcomputer is installed the RS232C serial communication interface that can realize data acquisition and transmission, single-chip microcomputer is connected with main control computer by the RS232C serial communication interface, and a detection hole (15) that is used for having in the plug-in mounting colorimetric bottle (13) of testing liquid is installed between detection light source and photoelectric sensor.
3. according to the described agricultural product hazard residue of claim 2 material detector, it is characterized in that detection light source is made up of four light emitting diodes that can send red, green, blue, Huang Si kind color respectively, four light emitting diodes are to detect the relative one by one installation in both sides, hole (15) with four photoelectric sensors.
4. according to the described agricultural product hazard residue of claim 1 material detector, it is characterized in that the described indispensable vessel that detect have pipettor suction nozzle (1), filter paper box (2), color comparison tube (3), volumetric flask (4), pen clip (5), conical flask (6), transfer pipet (7), pipettor suction nozzle (8) and funnel (9);
Described reagent has NaOH, sulfuric acid, potassium permanganate, sodium nitrate, ammonium chloride and palladium bichloride;
Described indispensable testing tool has No. 1 pipettor (10), No. 2 pipettors (11), color comparison tube jack (12), colorimetric bottle (13) and pretreatment column (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200727938U CN201293761Y (en) | 2008-11-25 | 2008-11-25 | Detector for agricultural product noxious residual substance |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008200727938U CN201293761Y (en) | 2008-11-25 | 2008-11-25 | Detector for agricultural product noxious residual substance |
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| CN201293761Y true CN201293761Y (en) | 2009-08-19 |
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| CNU2008200727938U Expired - Fee Related CN201293761Y (en) | 2008-11-25 | 2008-11-25 | Detector for agricultural product noxious residual substance |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435558A (en) * | 2011-09-13 | 2012-05-02 | 河海大学常州校区 | CO2 sensor based on test solution color measurement and detection method thereof |
| CN102608119A (en) * | 2012-02-28 | 2012-07-25 | 澳门理工学院 | Device and method for detecting moving foreign matters in medicinal liquid in pipeline |
| CN104198382A (en) * | 2014-06-18 | 2014-12-10 | 上海理工大学 | Two-channel detection apparatus and method for detecting pesticide residue |
| CN109900685A (en) * | 2017-12-07 | 2019-06-18 | 中国科学院宁波材料技术与工程研究所 | Sensor array and the preparation method and application thereof for detecting pesticide residue |
-
2008
- 2008-11-25 CN CNU2008200727938U patent/CN201293761Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435558A (en) * | 2011-09-13 | 2012-05-02 | 河海大学常州校区 | CO2 sensor based on test solution color measurement and detection method thereof |
| CN102435558B (en) * | 2011-09-13 | 2013-11-20 | 河海大学常州校区 | CO2 sensor based on test solution color measurement and detection method thereof |
| CN102608119A (en) * | 2012-02-28 | 2012-07-25 | 澳门理工学院 | Device and method for detecting moving foreign matters in medicinal liquid in pipeline |
| CN104198382A (en) * | 2014-06-18 | 2014-12-10 | 上海理工大学 | Two-channel detection apparatus and method for detecting pesticide residue |
| CN109900685A (en) * | 2017-12-07 | 2019-06-18 | 中国科学院宁波材料技术与工程研究所 | Sensor array and the preparation method and application thereof for detecting pesticide residue |
| CN109900685B (en) * | 2017-12-07 | 2021-12-17 | 中国科学院宁波材料技术与工程研究所 | Array sensor for detecting pesticide residues and preparation method and application thereof |
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Granted publication date: 20090819 Termination date: 20111125 |