CN109001139A - A kind of hand-hold food instrument for detecting pesticide residue through - Google Patents
A kind of hand-hold food instrument for detecting pesticide residue through Download PDFInfo
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- CN109001139A CN109001139A CN201811134748.5A CN201811134748A CN109001139A CN 109001139 A CN109001139 A CN 109001139A CN 201811134748 A CN201811134748 A CN 201811134748A CN 109001139 A CN109001139 A CN 109001139A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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Abstract
The present invention provides a kind of hand-hold food instrument for detecting pesticide residue through.Principle based on spectral colorimetry can fast and accurately measure the concentration of Pesticide Residues using this detector.It is easy to operate, it is only necessary to sample to be detected is put into cuvette, vibrate the several seconds, the concentration value that Pesticide Residues can directly be read on a display screen comes, it is suitble to the on-site test of food hygiene department Pesticide Residues, also average family is suitble to use, be worthy to be popularized.
Description
Technical field
The present invention relates to food safety monitoring fields, and in particular to one kind is for quickly detecting Pesticide Residues concentration
Hand-hold food instrument for detecting pesticide residue through.
Background technique
Crops are highly prone to the influence of pest and disease damage, weeds etc. during the growth process, therefore peasant is in management crops
The improvement of preventing disease and pest, weeds can be carried out according to the growing state of crops in the process, pesticide is exactly peasant for preventing and treating disease pest
Evil, weeds are most important " weapon ", have highly important effect to promoting agricultural to increase production.But peasant shortage section when using pesticide
Often there is unreasonable phenomenon in guidance, leads to Pesticides Residues, and Pesticide Residues amount over-standard phenomenon is also very general
Time, seriously affect the health of people, it is therefore necessary to which strict inspection Pesticide Residues prevent exceeded pesticide to human body
Harm.Pesticide residue is very big to the mankind and biohazard, Accurate Determining persticide residue, for ensureing that people's health and biology are more
Sample has important social effect.
The Detection Technologies of Pesticide Residues refers to whether having pesticide residual to detect in green food using existing every technology
It stays, this detection technique has vital effect to the production of green food.In recent years, the awareness of safety of people was continuous
During raising, there are higher requirement, in such circumstances, the Detection Technologies of Pesticide Residues for the safety of green food
Obtain certain development and progress, a variety of detection techniques like the mushrooms after rain, such as volumetric method, liquid chromatograph, gas-chromatography
Instrument, colorimetric method etc., these technologies improve the safety of green food.But the drug resistance of current disease pest gradually enhances,
Therefore the ingredient of pesticide also becomes more complicated, existing part Pesticides Testing technology has been unable to satisfy current demand, fails
Green food is effectively detected with the presence or absence of pesticide residue, therefore, China increases the research dynamics of the Detection Technologies of Pesticide Residues,
Better development is also achieved simultaneously.
But above method test linear relationship is poor, and precision is low, cannot meet the requirements, and needs to carry not using plurality of reagents
Convenient, complicated for operation, on-site test result depends on the subjective colorimetric of people to judge that there are different degrees of errors more, there is inspection
Survey the situation of result inaccuracy.Since pesticide residue is very big to the mankind and biohazard, Accurate Determining persticide residue, for protecting
Hinder people's health and bio-diversity, there is important social effect.The limitation of pesticide residue cannot be guaranteed just not only bad
The food of matter, or even malicious food can be become, even meeting threat to life causes irremediable situation after eater's use, thus
For strict control product quality, guarantee product safety, the detection of the residual quantity of Pesticide Residues and its suitable effective inspection
Survey method is with regard to particularly important.
Summary of the invention
Complicated for operation to food Detecting Pesticide in the prior art it is an object of the invention to be directed to, testing result is inaccurate
True phenomenon provides a kind of hand-hold food instrument for detecting pesticide residue through.
The detection working principle of food instrument for detecting pesticide residue through provided by the invention are as follows: the principle based on spectral colorimetry,
The spectrum calculating association corresponding with the progress of pesticide residue content value that probe is detected to Detecting Pesticide liquid, is detected at the scene
When, it is only necessary to sample to be detected is put into cuvette (wherein preset Detecting Pesticide liquid), the several seconds is vibrated, it can be aobvious
The remaining concentration value of pesticide in sample is directly read in display screen to come.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
The present invention provides a kind of hand-hold food instrument for detecting pesticide residue through, including food Detecting Pesticide module (1)
With fuselage (12), food Detecting Pesticide module (1) includes placing the slot and sense channel (15) of cuvette (3), fuselage
It (12) include upper casing (2), lower casing (4), circuit board (5), working condition show power supply (13) and LED module (11).
Preferably, the upper casing (2) is provided with switch key (8), display screen (7) and detection light source emission source (14).
Preferably, the lower casing (4) is provided with battery (9), battery cover (10) and vibration module (6).
Preferably, the battery (9) is lithium battery or battery.
It preferably, is pluggable between the food Detecting Pesticide module (1) and fuselage (2).
Preferably, the display screen (7) is dot matrix screen.
Application of the above-mentioned food instrument for detecting pesticide residue through in field of detection of food safety is further claimed in the present invention.
The present invention provides a kind of detection liquid of hand-hold food instrument for detecting pesticide residue through, comprising: buffer: 15g phosphorus
Sour disodium hydrogen and 1.6g potassium dihydrogen phosphate add 500mL water to dissolve；Substrate: 0.075g acetylthiocholine iodide adds 10mL water-soluble
Solution；Color developing agent: 0.05g 5,5- disulfide group -2,2- dinitrobenzoic acid add 26mL water to dissolve；And cholinesterase (commercial concentration),
The buffer prepared, substrate, color developing agent and enzyme are mixed according to volume ratio 25: 1: 1: 1 when use.
The method for being used to detect food pesticide residue the present invention further discloses above-mentioned detector, includes the following steps:
(1) sample 0.2g is weighed, is put into and is equipped in the cuvette (3) of Detecting Pesticide liquid 0.3mL in advance；
(2) cuvette (3) is put into food Detecting Pesticide module (1), further by food Detecting Pesticide
Module (1) is inserted into fuselage (12)；
(3) key (8) are turned on the switch, after vibrating the several seconds by vibration module (6), from the display screen (7) of fuselage (12)
Directly read food pesticide residue value.
Preferably, the detection liquid is the detection liquid prepared using following methods: buffer, 15g disodium hydrogen phosphate and
1.6g potassium dihydrogen phosphate adds 500mL water to dissolve；Substrate: 0.075g acetylthiocholine iodide adds 10mL water to dissolve；Color developing agent:
0.05g 5,5- disulfide group -2,2- dinitrobenzoic acid add 26mL water to dissolve；And commercially available cholinesterase, it is slow by what is prepared when use
Electuary, substrate, color developing agent and cholinesterase are mixed according to volume ratio 25: 1: 1: 1.
In actual work, launch detection light from detection light source emission source (14), be transmitted to food agriculture after cuvette (3)
On the receptor of medicine residue detection module (1) device, since degree of transmission of the different sample extracting solutions to detection light is different, thus
The light for being transmitted to food Detecting Pesticide module is also different, by the light of food Detecting Pesticide module (1) impression
Different calculating corresponding with the progress of pesticide residue concentration are associated with, so as to directly read on a display screen measurement sample agriculture
Medicine residual concentration value.
The present invention is based on the principles of spectral colorimetry, devise a kind of hand-hold food instrument for detecting pesticide residue through, using this
Detector can fast and accurately measure Pesticide Residues content, easy to operate, it is only necessary to be put into sample to be detected
In cuvette, the several seconds is vibrated, the value that can directly read food pesticide residue on a display screen is come.
The key of food instrument for detecting pesticide residue through provided by the invention is one-touch design, and journey is directly activated after pressing
Sequence, the completion from sample pre-treatments to testing result do not need to be manually operated, and operating in a key can be obtained testing result.Bottom
Portion indicates testing result using LED light ring, is easily recognized testing result more intuitively, and it is subjective to eliminate artificial colorimetric bring
On difference.Front detection module uses detachable isolated design with fuselage, is conveniently replaceable detection probe, can be for not
The replacement of detection module is carried out with project and different types of examination target object.It is suitble to food hygiene department food pesticide residue
On-site test is also suitble to average family to use, is worthy to be popularized.
Detailed description of the invention
Fig. 1 hand-hold food instrument for detecting pesticide residue through structural perspective.
Fig. 2 hand-hold food instrument for detecting pesticide residue through part structure diagram.
Fig. 3 hand-hold food instrument for detecting pesticide residue through material object schematic diagram.
Fig. 4 hand-hold food instrument for detecting pesticide residue through light path schematic diagram.
Wherein, 1. food Detecting Pesticide module, 2. upper casings, 3. cuvettes, 4. lower casing, 5. circuit board (pcb board), 6.
Vibration module, 7. display screens, 8. switch keys, 9. batteries, 10. battery covers, 11.LED module, 12. fuselages, 13. working conditions
Show power supply, 14. detection light source emission sources, 15. sense channels, 16. place the slot of cuvette.
Specific embodiment
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, instead of all the embodiments.
The preparation of 1 trace standard of pesticide solution of embodiment
Certain acephatemet is measured respectively in 10mL volumetric flask, adds water constant volume, and after diluting in proportion, prepare becomes dense respectively
Degree is 0,0.01mg/L, 0.0.05mg/L, 0.1mg/L, 0.5mg/L, 5mg/L, 20mg/L, 50mg/L.
Table 1: trace standard of pesticide solution numbers
The preparation of 2 Detecting Pesticide liquid of embodiment
(1) buffer 15g disodium hydrogen phosphate and 1.6g potassium dihydrogen phosphate add 500mL water to dissolve；Substrate: 0.075g iodine bisulfide
It is dissolved for acetylcholine plus 10mL water；Color developing agent: 0.05g 5,5- disulfide group -2,2- dinitrobenzoic acid add 26mL water to dissolve；
And commercially available cholinesterase；
(2) buffer prepared, substrate, color developing agent and enzyme are mixed according to volume ratio 25: 1: 1: 1 when using.
Embodiment 3 is using each trace standard of pesticide solution in hand-hold food instrument for detecting pesticide residue through measurement embodiment 1
Sample
(1) sample 0.2g is weighed, is put into and is equipped in the cuvette (3) of Detecting Pesticide liquid 0.3mL in advance；
(2) cuvette (3) is put into food Detecting Pesticide module (1), further by food Detecting Pesticide
Module (1) is inserted into fuselage (12)；
(3) key (8) are turned on the switch, after vibrating the several seconds by vibration module (6), from the display screen (7) of fuselage (12)
Directly read food pesticide residue value.
Table 2: the result of hand-hold food instrument for detecting pesticide residue through measurement
It can be seen that the result measured using hand-hold food instrument for detecting pesticide residue through and pesticide from the measurement result of table 2
The concentration of residue criterion product is substantially consistent, shows using hand-hold food instrument for detecting pesticide residue through provided by the invention measurement
As a result it can reflect the concentration levels of pesticide residue sample to be measured substantially.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of hand-hold food instrument for detecting pesticide residue through, including food Detecting Pesticide module (1) and fuselage (12), special
Sign is: food Detecting Pesticide module (1) includes placing the slot (16) and sense channel (15) of cuvette (3), fuselage
It (12) include upper casing (2), lower casing (4), circuit board (5), working condition show power supply (13) and LED module (11).
2. food instrument for detecting pesticide residue through as described in claim 1, it is characterised in that: the upper casing (2) be provided with switch by
Key (8), display screen (7) and detection light source emission source (14).
3. food instrument for detecting pesticide residue through as described in claim 1, it is characterised in that: the lower casing (4) is provided with battery
(9), battery cover (10) and vibration module (6).
4. food instrument for detecting pesticide residue through as claimed in claim 3, it is characterised in that: the battery (9) is lithium battery or storage
Battery.
5. the food instrument for detecting pesticide residue through as described in claim 1-4 any claim, it is characterised in that: food pesticide is residual
It is pluggable for staying between detection module (1) and fuselage (2).
6. the food instrument for detecting pesticide residue through as described in claim 1-4 any claim, it is characterised in that: the display screen
It (7) is dot matrix screen.
7. the food instrument for detecting pesticide residue through as described in claim 1-6 any claim is in field of detection of food safety
Using.
8. a kind of detection liquid of hand-hold food instrument for detecting pesticide residue through characterized by comprising buffer: 15g phosphoric acid hydrogen
Disodium and 1.6g potassium dihydrogen phosphate add 500mL water to dissolve；Substrate: 0.075g acetylthiocholine iodide adds 10mL water to dissolve；It is aobvious
Toner: 0.05g 5,5- disulfide group -2,2- dinitrobenzoic acid add 26mL water to dissolve；And cholinesterase, it will prepare when use
Buffer, substrate, color developing agent and enzyme are mixed according to volume ratio 25: 1: 1: 1.
9. a kind of be used to detect Pesticide Residues concentration using detector described in claim 1-6 any claim
Method, characterized by the following steps:
(1) sample 0.2g is weighed, is put into and is equipped in the cuvette (3) of Detecting Pesticide liquid 0.3mL in advance；
(2) cuvette (3) is put into food Detecting Pesticide module (1), further by food Detecting Pesticide module
(1) it is inserted into fuselage (12)；
(3) key (8) are turned on the switch, after vibrating the several seconds by vibration module (6), from the display screen (7) of fuselage (12) directly
Read Pesticide Residues concentration value.
10. according to the method described in claim 9, it is characterized in that, the dissolution reagent is detection according to any one of claims 8
Liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134748.5A CN109001139A (en) | 2018-09-28 | 2018-09-28 | A kind of hand-hold food instrument for detecting pesticide residue through |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134748.5A CN109001139A (en) | 2018-09-28 | 2018-09-28 | A kind of hand-hold food instrument for detecting pesticide residue through |
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| Publication Number | Publication Date |
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| CN109001139A true CN109001139A (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811134748.5A Pending CN109001139A (en) | 2018-09-28 | 2018-09-28 | A kind of hand-hold food instrument for detecting pesticide residue through |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345468A (en) * | 2020-09-24 | 2021-02-09 | 九天起宏(江苏)检测有限公司 | Food detection instrument of many cuvettes of hand-held type contrast |
| CN116465880A (en) * | 2023-03-13 | 2023-07-21 | 广东加减乘除食品有限公司 | Food detection method |
| US20230375466A1 (en) * | 2022-05-18 | 2023-11-23 | Taiwan Redeye Biomedical Inc. | Pesticide detection device with washing function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345468A (en) * | 2020-09-24 | 2021-02-09 | 九天起宏(江苏)检测有限公司 | Food detection instrument of many cuvettes of hand-held type contrast |
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Application publication date: 20181214 |