CN108051397A - It is a kind of that pesticide residue and the method for illegal additive are detected based on infrared technique - Google Patents
It is a kind of that pesticide residue and the method for illegal additive are detected based on infrared technique Download PDFInfo
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- CN108051397A CN108051397A CN201711363417.4A CN201711363417A CN108051397A CN 108051397 A CN108051397 A CN 108051397A CN 201711363417 A CN201711363417 A CN 201711363417A CN 108051397 A CN108051397 A CN 108051397A
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- pesticide residue
- infrared
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000447 pesticide residue Substances 0.000 title claims abstract description 18
- 239000000654 additive Substances 0.000 title claims abstract description 17
- 230000000996 additive effect Effects 0.000 title claims abstract description 17
- 239000000126 substance Substances 0.000 claims abstract description 32
- 238000002329 infrared spectrum Methods 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000003595 spectral effect Effects 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 238000004458 analytical method Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 235000013399 edible fruits Nutrition 0.000 claims abstract description 7
- 235000013311 vegetables Nutrition 0.000 claims abstract description 7
- 239000000523 sample Substances 0.000 claims description 36
- 230000003287 optical effect Effects 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 239000012488 sample solution Substances 0.000 claims description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000012491 analyte Substances 0.000 abstract description 2
- 239000000575 pesticide Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 231100000570 acute poisoning Toxicity 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000001684 chronic effect Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- 206010012289 Dementia Diseases 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000007665 chronic toxicity Effects 0.000 description 1
- 231100000160 chronic toxicity Toxicity 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002255 enzymatic effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000012933 kinetic analysis Methods 0.000 description 1
- 238000002703 mutagenesis Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 210000000653 nervous system Anatomy 0.000 description 1
- 231100000189 neurotoxic Toxicity 0.000 description 1
- 230000002887 neurotoxic effect Effects 0.000 description 1
- 239000003986 organophosphate insecticide Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 208000027765 speech disease Diseases 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
Abstract
The present invention provides a kind of method based on infrared technique detection pesticide residue and illegal additive, choose one group of known concentration pesticide residue and illegal additive solution sample as calibration set, measure its near infrared light spectral intensity, establish the title calibrating patterns between the material concentration and near infrared light spectral intensity, the present invention can be by the substance of replacing the monochromator of different parameters to detect different, therefore can the substance to be detected easily be selected according to vegetable and fruit species, realize the purpose to a variety of detection analyte detections, and the present invention is based on be near-infrared spectrum analysis principle, it is generated during the test without any harmful substance, environment will not be damaged；The present invention is based on be near-infrared spectrum analysis principle, for detection process, without consumables such as test paper reagents, therefore greatly reduce testing cost.
Description
Technical field
The present invention is a kind of method based on infrared technique detection pesticide residue and illegal additive, belongs to Pesticides Testing skill
Art field.
Background technology
In the prior art, near infrared spectroscopic method be it is a kind of can be used for enzymic kinetic analysis, it is lossless, quickly detect
Analysis method.Near infrared spectrum refers to electromagnetic wave of the wavelength between visual field and middle infrared, is people in absorption spectrum
First non-visible light area of middle discovery.Near infrared spectrum is vibrated with hydric group (O-H, N-H, C-H) in organic molecule
Sum of fundamental frequencies is consistent with the uptake zone of frequencys multiplication at different levels, by scanning the near infrared spectrum of sample, can obtain organic molecule in sample and contain
The characteristic information of hydrogen group, near infrared spectrum chemical information is relatively abundanter, the chemical ring where same group or different groups
During the difference of border, they also have significant difference to the wavelength of near-infrared absorption with intensity.And utilize near-infrared spectrum technique point
Analyse sample have easily and fast, efficiently, it is accurately relatively low with cost, do not destroy sample, do not consume chemical reagent, it is free from environmental pollution
The advantages that, therefore the technology is favored be subject to more and more people.Diffuse is that the light that light source is sent enters sample interior process
Multiple reflections, refraction, diffraction and absorb after return sample surfaces light, therefore diffuse loaded sample chemical composition and
Structural information., whereas if it is being obtained after substantial amounts of detection and particular chemicals are corresponding specific diffuses
Optical parameter, you can the concentration of predetermined substance is learnt by the detection to diffuse to this kind.
Recently as unprecedented surging and foodstuff planting area the gradual expansion of peasant's enthusiasm for production, the application of pesticide
Amount also increases year by year, but as the chronic administration of pesticide, the amount of application of unit area increase year by year, production cost is increasingly
Greatly, the health of people while is also severely compromised.Pesticide constantly accumulates in human body, though it will not cause human body in the short time
There is apparent acute poisoning symptom, but chronic hazard can be generated, such as：Organophosphorus and carbamate pesticides class pesticide can inhibit cholinester
Enzymatic activity destroys the normal function of nervous system.Organophosphorus insecticide as neurotoxic substance, can also cause nerve dysfunction,
Tremble, amentia, the performances such as speech disorders.The species of pesticide residue and quantity and the chemical property of pesticide, structure etc. are special
Point is related.The residual of pesticide is bigger, and the residual quantity in food is more, also bigger to the harm of human body.It remains in food
Pesticide can not only cause the acute poisoning of people, also with chronic toxicity, particularly carcinogenic, teratogenesis, mutagenesis and to offspring
Influence, increasingly attract people's attention.Therefore how to realize easily and reliably in vegetable and fruit agriculture chemical it is residual
It stays to be detected and just be of great significance to, so a kind of new technology is needed to solve the above problems.
The content of the invention
In view of the deficienciess of the prior art, it is an object of the present invention to provide one kind based on infrared technique detection pesticide residue and
The method of illegal additive, to solve the problems mentioned in the above background technology, the present invention is easy to use, easy to operation, stablizes
Property it is good, reliability is high.
To achieve these goals, the present invention is to realize by the following technical solutions：One kind is examined based on infrared technique
Pesticide residue and the method for illegal additive are surveyed, is included the following steps：
(1) it is near to measure it as calibration set for the pesticide residue of one group of known concentration of selection and illegal additive solution sample
Infrared spectral intensity establishes the title calibrating patterns between the material concentration and near infrared light spectral intensity；
(2) take the substance of another group of known concentration that the near infrared spectrum of pre- sample is substituted into school as forecast set again
Quasi-mode type obtains the predicted value of sample, inclined with the related coefficient between predicted value and actual sample active concentration and relative standard
Difference weighs the degree of reliability of built calibrating patterns, calibrating patterns are constantly optimized, obtains this kind of optimal object of the degree of correlation
The intensity of matter-concentration correlation model, and the correlation model of each detection substance is stored in the data handling system of device；
(3) according to different material to be detected, corresponding optical signal processing system and intensity-concentration association are selected
Model carries out the detection of a certain index using vegetable and fruit cleaning solution sample；
(4) after having detected an index, if you need to detect another substance, then the optical treatment part of monochromator is replaced,
Change the wavelength for filtering out light.
Further, the calibration set be by largely to the near-infrared spectrum analysis of same substance various concentration sample,
It obtains to characterize the near infrared spectrum spectral peak of its concentration and selects corresponding monochromator parameter, and establish corresponding calculating mould
Type.
Further, the mass concentration of sample to be tested is 150mg/L-950mg/L in testing sample solution.
Further, the near infrared spectrum is 4000-10000cm-1In the range of spectrum.
Beneficial effects of the present invention：A kind of side that pesticide residue and illegal additive are detected based on infrared technique of the present invention
Method, the present invention can be by the substances of replacing the monochromator of different parameters to detect different, therefore can be easily according to vegetables
Types of fruits selects the substance to be detected, and realizes the purposes to a variety of detection analyte detections, and the present invention is based on be near red
The principle of external spectrum analysis, generates without any harmful substance, environment will not be damaged during the test；The present invention is based on
Be near-infrared spectrum analysis principle, for detection process, without consumables such as test paper reagents, therefore greatly reduce
Testing cost.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, with reference to
Specific embodiment, the present invention is further explained.
The present invention provides a kind of technical solution：A kind of side that pesticide residue and illegal additive are detected based on infrared technique
Method includes the following steps：
(1) it is near to measure it as calibration set for the pesticide residue of one group of known concentration of selection and illegal additive solution sample
Infrared spectral intensity establishes the title calibrating patterns between the material concentration and near infrared light spectral intensity；
(2) take the substance of another group of known concentration that the near infrared spectrum of pre- sample is substituted into school as forecast set again
Quasi-mode type obtains the predicted value of sample, inclined with the related coefficient between predicted value and actual sample active concentration and relative standard
Difference weighs the degree of reliability of built calibrating patterns, calibrating patterns are constantly optimized, obtains this kind of optimal object of the degree of correlation
The intensity of matter-concentration correlation model, and the correlation model of each detection substance is stored in the data handling system of device；
(3) according to different material to be detected, corresponding optical signal processing system and intensity-concentration association are selected
Model carries out the detection of a certain index using vegetable and fruit cleaning solution sample；
(4) after having detected an index, if you need to detect another substance, then the optical treatment part of monochromator is replaced,
Change the wavelength for filtering out light.
The calibration set is by the way that largely to the near-infrared spectrum analysis of same substance various concentration sample, obtaining being capable of table
It levies the near infrared spectrum spectral peak of its concentration and selects corresponding monochromator parameter, and establish corresponding computation model, sample to be tested
The mass concentration of sample to be tested is 150mg/L-950mg/L in solution, and the near infrared spectrum is 4000-10000cm-1In the range of
Spectrum.
Embodiment：Choose one group of known concentration pesticide residue and illegal additive solution sample as calibration set, measure
Its near infrared light spectral intensity establishes the title calibrating patterns between the material concentration and near infrared light spectral intensity；Another group is taken again
Know that the near infrared spectrum of pre- sample as forecast set, is substituted into calibrating patterns, obtain the predicted value of sample by the substance of concentration,
That weighs built calibrating patterns with the related coefficient between predicted value and actual sample active concentration and relative standard deviation can
By degree, calibrating patterns are constantly optimized, obtain intensity-concentration correlation model of this kind of optimal substance of the degree of correlation, and
The correlation model of each detection substance is stored in the data handling system of device；According to different material to be detected, choosing
Fixed corresponding optical signal processing system and intensity-concentration correlation model carry out a certain finger using vegetable and fruit cleaning solution sample
Target detects；After having detected an index, if you need to detect another substance, then the optical treatment part of monochromator is replaced, is changed
Become the wavelength for filtering out light.The calibration set be by largely to the near-infrared spectrum analysis of same substance various concentration sample,
It obtains to characterize the near infrared spectrum spectral peak of its concentration and selects corresponding monochromator parameter, and establish corresponding calculating mould
Type, the mass concentration of sample to be tested is 150mg/L-950mg/L in testing sample solution, and the near infrared spectrum is 4000-
10000cm-1In the range of spectrum
The basic principles, main features and the advantages of the invention have been shown and described above, for this field skill
For art personnel, it is clear that the invention is not restricted to the details of above-mentioned exemplary embodiment, and without departing substantially from the present invention spirit or
In the case of essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes falling within the meaning and scope of the equivalent requirements of the claims in the present invention
It is interior.Claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
Using specification as an entirety, the technical solutions in each embodiment can also be properly combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (4)
1. a kind of detect pesticide residue and the method for illegal additive based on infrared technique, it is characterised in that includes the following steps：
(1) pesticide residue of one group of known concentration of selection and illegal additive solution sample measure its near-infrared as calibration set
Spectral intensity establishes the title calibrating patterns between the material concentration and near infrared light spectral intensity；
(2) take the substance of another group of known concentration that the near infrared spectrum of pre- sample is substituted into calibrating die as forecast set again
Type obtains the predicted value of sample, with the related coefficient between predicted value and actual sample active concentration and relative standard deviation come
The degree of reliability for building calibrating patterns is weighed, calibrating patterns are constantly optimized, obtain this kind of optimal substance of the degree of correlation
Intensity-concentration correlation model, and the correlation model of each detection substance is stored in the data handling system of device；
(3) according to different material to be detected, corresponding optical signal processing system and intensity-concentration correlation model are selected,
The detection of a certain index is carried out using vegetable and fruit cleaning solution sample；
(4) after having detected an index, if you need to detect another substance, then the optical treatment part of monochromator is replaced, changed
Filter out the wavelength of light.
2. a kind of method based on infrared technique detection pesticide residue and illegal additive according to claim 1, special
Sign is：The calibration set is by the way that largely to the near-infrared spectrum analysis of same substance various concentration sample, obtaining being capable of table
It levies the near infrared spectrum spectral peak of its concentration and selects corresponding monochromator parameter, and establish corresponding computation model.
3. a kind of method based on infrared technique detection pesticide residue and illegal additive according to claim 1, special
Sign is：The mass concentration of sample to be tested is 150mg/L-950mg/L in testing sample solution.
4. a kind of method based on infrared technique detection pesticide residue and illegal additive according to claim 1, special
Sign is：The near infrared spectrum is 4000-10000cm-1In the range of spectrum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711363417.4A CN108051397A (en) | 2017-12-18 | 2017-12-18 | It is a kind of that pesticide residue and the method for illegal additive are detected based on infrared technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537469A (en) * | 2020-06-04 | 2020-08-14 | 哈尔滨理工大学 | Apple quality rapid nondestructive testing method based on near-infrared technology |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964946A (en) * | 2015-03-19 | 2015-10-07 | 复旦大学 | Detection apparatus and detection method for pesticide and fertilizer residues in vegetable and fruit based on near infrared spectroscopic analysis |
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- 2017-12-18 CN CN201711363417.4A patent/CN108051397A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964946A (en) * | 2015-03-19 | 2015-10-07 | 复旦大学 | Detection apparatus and detection method for pesticide and fertilizer residues in vegetable and fruit based on near infrared spectroscopic analysis |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537469A (en) * | 2020-06-04 | 2020-08-14 | 哈尔滨理工大学 | Apple quality rapid nondestructive testing method based on near-infrared technology |
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Application publication date: 20180518 |