CN101644667A - Quick detector for quality and safety of tea - Google Patents
Quick detector for quality and safety of tea Download PDFInfo
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- CN101644667A CN101644667A CN200810117755A CN200810117755A CN101644667A CN 101644667 A CN101644667 A CN 101644667A CN 200810117755 A CN200810117755 A CN 200810117755A CN 200810117755 A CN200810117755 A CN 200810117755A CN 101644667 A CN101644667 A CN 101644667A
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Abstract
The invention discloses a quick detector for quality and safety of tea. The detector is provided with a machine shell of which the upper surface is provided with a color comparison cuvette cover. Thedetector is characterized in that: a transmission type color comparison cuvette and a reflection type color comparison cuvette are arranged side by side under the color comparison cuvette cover of themachine shell; the transmission type color comparison cuvette is a rectangular tank body, one side surface of the tank body is provided with a light source/monochromator, and the other opposite sidesurface is provided with a photoelectric detector; and the reflection type color comparison cuvette is a cuboid of which the inside is provided with three T-shaped channel holes, channel openings of two side channel holes are provided with a light source/monochromator respectively, the lower part channel opening of the middle channel hole is provided with a photoelectric detector, and the lower part channel opening of the middle channel hole is provided with a chromatographic plate. The detector can be used for quickly and quantitatively detecting the contents of heavy metal and pesticide in tea in field and quickly detect the quality safety of tea in field.
Description
Technical field
The present invention relates to a kind of rapid detection apparatus of easy, sensitive, quick on-the-spot quality and safety of tea, be specifically related to a kind of rapid detection apparatus that is used for on-the-spot fast quantification inspection tealeaves heavy metal and pesticide concentration.
Background technology
China is the original producton location of tea tree, and tea tree comes across the Yunnan-Guizhou Plateau, the area, Xishuangbanna in China west and south the earliest.The principal item of tealeaves has green tea, black tea, oolong tea, jasmine tea, white tea, yellow tea.Tea has body-building, controls the curative effect of medication of disease, and the rich again temperament and interest of appreciating can be cultivated one's taste.With tea is that drink has changed the bad habit that people drink unboiled water, has improved the people's the general level of the health significantly.
Separation and evaluation through modern science contain the organic chemistry composition and reach kind more than 450 in the tealeaves, inorganic mineral element reaches kind more than 40.Organic chemistry composition and inorganic mineral element in the tealeaves contain many nutritional labelings and effective component.The organic chemistry composition mainly contains: Tea Polyphenols class, catechin, vegetable soda, protein, amino acid, vitamin, pectin element, organic acid, lipopolysaccharides, carbohydrate, enzyme, pigment etc.Inorganic mineral element mainly contains: potassium, calcium, magnesium, cobalt, iron, manganese, aluminium, sodium, zinc, copper, nitrogen, phosphorus, fluorine, iodine, selenium etc.
Catechin wherein: being commonly called as tea tannin, is the peculiar composition of tealeaves, has hardship, astringent taste and convergence.In millet paste, can combine and relax the physiological action of caffeine human body with caffeine.Anti-oxidant, the anti-halmatogenesis of tool, antitumor, reduce cholesterol and low low-density ester gp content in the blood, suppress increased blood pressure, suppress effects such as platelet aggregation, antibiotic, anti-product allergy.Caffeine has bitter taste, is the important composition that constitutes the millet paste flavour.In the black tea infusion, be combined into compound with many nothings phenols; The cold back of millet paste forms emulsion.Distinctive catechin and oxidation condensation compound thereof can make the excitation of caffeine slow down and continue in the tea, so the people that can make long-distance driving of having tea keeps clearheaded and has legs.
Contain 11 kinds of mineral matters such as abundant potassium, calcium, magnesium, manganese in the tea.Cations is more and negative ion is less in the millet paste, belongs to basic food.Can help body fluid to keep alkalescence, keep fit.
Potassium: promote blood sodium to get rid of.Blood sodium content height is to cause one of hypertensive reason, and drink tea to prevent hypertension more.
Fluorine: have and prevent the effect that decays tooth.
Manganese: have anti-oxidant and prevent the effect that wears out, raise immunity, and help the utilization of calcium.Because of being insoluble to hot water, it is edible to wear into the tea powder.
Tealeaves is indispensable drink in people's daily life.In the production and preservation process of tealeaves, people often use agricultural chemicals to carry out deinsectization.Contain noxious materials such as organochlorine, organophosphorus in the agricultural chemicals, when killing off the insect pests, human body is also caused damage.Therefore, the persticide residue in the tealeaves there is extremely strict restriction both at home and abroad.
China has prohibited in nineteen eighty-three and has produced benzene hexachloride and D.D.T. (dichloro-diphenyl-trichloroethane).But because the D.D.T. (dichloro-diphenyl-trichloroethane) agricultural insecticide is effective, and allows the dicofol agricultural chemicals of production in recent years, its oxidation product is a D.D.T. (dichloro-diphenyl-trichloroethane) class agricultural chemicals.In general, the D.D.T. (dichloro-diphenyl-trichloroethane) agricultural chemicals that uses in the tea growth process Tanaka that can be in is residual more than 3 years.Therefore, to ban use of D.D.T. (dichloro-diphenyl-trichloroethane) class agricultural chemicals be instant challenge in the plantation of current tealeaves in strictness.
Because above various reasons, tea quality detect very necessary, ensure that the tea products quality becomes the healthy part of protection people, also becomes one of basis of improving the human life quality.Simultaneously, the Fast Detection Technique of heavy metal and pesticide concentration obtains the great attention of each relevant departments too in the detection tealeaves, and a lot of method for quick also are included into each national standard method.At present, the instrument and the method for tea quality detection are a lot.As portable gas chromatography method and spectrophotometric method etc., but various detection methods all have the some shortcomings part, and some detection method needs expensive instrument, and some detection method accuracy of detection is not high, detection method is loaded down with trivial details, waste time and energy, and can not detect tea quality at the scene.The chromatograph that uses on the market not only costs an arm and a leg at present, and generally grass-roots unit does not all have, so extremely inconvenient to the detection of tealeaves.Therefore, press for a kind of cheap popular quick detector for quality and safety of tea device of research, not only easy to detect, and also precision is higher, can reduce even prevent the generation of poisoning.
Summary of the invention
The object of the present invention is to provide a kind of can be easy, quick, on-the-spot, the quick detector for quality and safety of tea of detection by quantitative tea quality.
For reaching above-mentioned purpose, the concrete content of the present invention is:
A kind of quick detector for quality and safety of tea is provided with casing, is provided with the colorimetric pool lid at the upper surface of casing, it is characterized in that the following transmission-type colorimetric pool and the reflective colorimetric pool of being provided with side by side of the colorimetric pool lid of casing.
Wherein said transmission-type colorimetric pool is a rectangular parallelepiped, side one end of transmission-type colorimetric pool is provided with light source/monochromator, connect the corresponding other end with light source/monochromator and be provided with photoelectric detector, light source/monochromator and photoelectric detector all are arranged on the colorimetric pool housing of transmission-type colorimetric pool; The bottom sealing of transmission-type colorimetric pool forms single pass reaction transmission-type colorimetric pool by light source/monochromator and photoelectric detector with this, puts into cuvette in reaction transmission-type colorimetric pool central space.
Wherein said reflective colorimetric pool is a rectangular parallelepiped, reflective colorimetric pool inside is provided with three access openings, wherein the both sides access opening is symmetrical respectively is located at both sides, central passage hole with certain angle, the passway of both sides access opening is on the two sides of reflective colorimetric pool 2, the passway in central passage hole is on the bottom surface of reflective colorimetric pool, article three, another passway of access opening overlaps the upper surface that reflective colorimetric pool is located in the passway for overlapping the passway; On the passway of both sides access opening, be equiped with light source/monochromator respectively, the position of described light source/monochromator is corresponding one by one, angled with the side, the focus of light source/monochromator converges in and overlaps on the passway, the top of reflective colorimetric pool, and inside edge is provided with the edge in the coincidence passway, edge and focus are on same surface level, lay a chromatoplate on the edge, photoelectric detector is laid in the bottom of the access opening of chromatoplate correspondence, receives the reflected light signal of chromatoplate by the middle part path channels.
One chromatoplate pressing plate is wherein arranged on chromatoplate.
Wherein said light source/monochromator is super bright light emitting diode; Described photoelectric detector is a photoelectric sensor.
Wherein transmission-type colorimetric pool and reflective colorimetric pool are plastic material, and chromatoplate is made with materials such as paper, glass, aluminium foils.
The wherein said colorimetric pool lid of casing outer surface that places is connected on the host shell.
Wherein cuvette is the cuvette of standard quartz or glass.
Wherein also be provided with LCDs and a plurality of button, and below right side of face behind the casing, be disposed with power control switch, supply socket and RS-232 interface.
The present invention adopts technique scheme, and its effect is:
1, adopt the colorimetric analysis method, make easy and simple to handlely, the testing result intuitive is good.
2, be applicable to the single method of sample or the fast quantification detection of a plurality of methods.
3, adopt microprocessor control, have measurement, setting, record, preservation and data processing function.Be provided with the RS-232/USB interface,, and be provided with functions such as help with the PC on-line communication.The automaticity height.
4, large-screen lc Chinese shows, the man-machine interactive operation, and volume is little, in light weight, easy to use.
The present invention can carry out fast detecting to the quality safety of tealeaves, the content of lead, copper, cadmium, mercury, cadmium, arsenic, organochlorine, benzene hexachloride, D.D.T. (dichloro-diphenyl-trichloroethane), dicofol, organophosphorus, acephatemet, orthene, Rogor, DDVP, fenifrothion, quinalphos, chrysanthemum fat, cypermethrin, decamethrin, fenvalerate, biphenyl chrysanthemum fat in the fast detecting tealeaves.
Description of drawings
Fig. 1: be external structure synoptic diagram of the present invention.
Fig. 2: be reflective colorimetric pool 2 structural representations of the present invention.
Fig. 3: be colorimetric pool structural representation of the present invention.
Fig. 4: be principle of work synoptic diagram of the present invention.
Embodiment
Below the structure of the quick detector for quality and safety of tea of the present invention effect forming and can produce just, conjunction with figs. is described in detail as follows with preferred embodiment:
As shown in Figure 1, quick detector for quality and safety of tea of the present invention is provided with casing 1, upper surface at casing 1 is provided with LCDs 11, a plurality of button 12 and colorimetric pool lid 13, and is disposed with power control switch, supply socket and RS-232 interface (not shown) below casing 1 back right side of face.
The following transmission-type colorimetric pool 3 and the reflective colorimetric pool 2 of being provided with side by side of the colorimetric pool lid 13 of casing 1.
As shown in Figure 3, wherein said transmission-type colorimetric pool 3 is a rectangular parallelepiped, side one end of transmission-type colorimetric pool 3 is provided with light source/monochromator 33, connect the corresponding other end with light source/monochromator 33 and be provided with photoelectric detector 32, light source/monochromator 33 and photoelectric detector 32 all are arranged on the colorimetric pool housing 31 of transmission-type colorimetric pool 3.Described light source/monochromator 33 is super bright light emitting diode, is arranged on the side of described look pond housing 31; Described photoelectric detector 32 is a photoelectric sensor.The bottom sealing of transmission-type colorimetric pool 3 forms single pass reaction transmission-type colorimetric pool 3 by light source/monochromator 33 and photoelectric detector 32 with this, puts into the cuvette (not shown) in reaction transmission-type colorimetric pool 3 central space.
As shown in Figure 2, described reflective colorimetric pool 2 is a rectangular parallelepiped, reflective colorimetric pool 2 inside are provided with three access openings 231 of " individual " font, 232 and 233, wherein both sides access opening 231 and 233 is symmetrical respectively is located at 232 both sides, central passage hole with certain angle, both sides access opening 231 and 233 passway are on the two sides of reflective colorimetric pool 2, central passage hole 232 is vertically to be provided with, its passway is on the bottom surface of reflective colorimetric pool 2, article three, access opening 231, another passway of 232 and 233 overlaps the upper surface that reflective colorimetric pool 2 is located in passway 234 for overlapping passway 234; On the passway of both sides access opening 231 and 233, be equiped with light source/ monochromator 27,28 respectively, the position correspondence of light source/ monochromator 27,28, angled with the side, the top that makes the light path focus of light source/ monochromator 27,28 converge in reflective colorimetric pool 2 overlaps 234 places, passway, 234 inside edges are provided with edge 21 in the coincidence passway, edge 21 and focus are on same surface level, lay a chromatoplate 24 on the edge 21, photoelectric detector 25 is laid in 232 bottoms, chromatoplate 24 respective channel holes, receives the reflected light signal of chromatoplate 24 by path channels 232.Chromatoplate 24 is the stratographic analysis special product, is not described in detail in this.One chromatoplate pressing plate 26 is arranged on chromatoplate 24, when detecting, it is covered on chromatoplate 24, guarantee reflective colorimetric pool 2 lucifuges.
Transmission-type colorimetric pool 3 and reflective colorimetric pool 2 are plastic material, and chromatoplate 24 also can be selected chromatographic paper for use; The described colorimetric pool lid 12 of casing outer surface that places is connected on the host shell 1, can freely renovate, and when opening, cuvette can freely take out and be placed in transmission-type colorimetric pool 3 or the reflective colorimetric pool 2, in the time of on colorimetric pool covers, guarantees the colorimetric pool lucifuge.Described cuvette is standard quartz cuvette (or glass cuvette), is not described in detail in this.
Among the present invention, the super bright light emitting diode that light source/ monochromator 27,28 and light source/monochromator 33 have adopted Japanese day Asia and Toyota Company to produce, luminance parameter is more than 1000mcd; Photoelectric detector 25 among the present invention and photoelectric detector 32 are in the present embodiment, adopted American TI Company to produce the integrated electro sensor, model can be a kind of among TSL201, TSL202, TSL203, TSL204, TSL205, TSL206, TSL207, TSL208, TSL209, TSL220, TSL230, TSL235, TSL245, TSL250, TSL251, TSL250, TSL253, TSL254, TSL255, TSL256, TSL257, TSL258, TSL259, TSL260, TSL261, the TSL262.Certainly, the present invention also can adopt other to have the integrated electro sensor of equal effect.
As shown in Figure 4, be each component work relationship synoptic diagram of the present invention, wherein light source/monochromator 41, detected sample 42 and photoelectric detector 43 are in parallel with microprocessor 44, when power supply 45 is opened, quick detector for quality and safety of tea of the present invention has two kinds of duties, and is as described below:
As shown in Figure 3 and Figure 4, when selecting for use transmission-type colorimetric pool 3 to carry out work, the cuvette (be equivalent among Fig. 4 42) that test solution at first will be housed is placed in the transmission-type colorimetric pool 3, close colorimetric pool lid 13 then, opening power and light source/monochromator 33 (quite Fig. 4 in 41), the light transmission cuvette that light source/monochromator 33 sends is received by photoelectric detector 32 (quite Fig. 4 in 43), photoelectric detector 32 detected signals are passed to and are transferred to microprocessor 44, carry out data analysis by microprocessor 44 result is outputed on the display screen 11.
As Fig. 2 and shown in Figure 4, when selecting for use reflective colorimetric pool 2 to carry out work, at first test solution is dropped on the chromatoplate 24 (be equivalent among Fig. 4 42), then chromatoplate pressing plate 26 is covered, close colorimetric pool lid 13 then, opening power and light source/monochromator 27,28 (quite Fig. 4 in 41), light source/ monochromator 27,28 light that send are refracted on the chromatoplate 24 by access opening 231 and 233, pass on the photoelectric detector 25 (quite Fig. 4 in 43) by access opening 232 again, photoelectric detector 25 detected signals are passed to and are transferred to microprocessor 44, carry out data analysis by microprocessor 44 result is outputed on the display screen 11.
Certainly the present invention also can be by RS-232/USB interface 16 and PC on-line communication, and analysis result is shown by PC.P51, P52 series that microprocessor 44 is produced for PHILIPS Co., its major parameter is 12 single-chip microcomputers, internal storage 64K.The output signal that microprocessor 44 is used for the receiving photoelectric detector line data of going forward side by side is handled, and the information after the processing is shown by LCDs 11.Simultaneously, microprocessor 44 also can pass through RS-232/USB interface and computer on-line communication, and the setting of data, collection, analysis and processing procedure can be finished by operating computer, and the information after will handling shows by display screen or printer.
The quick detector for quality and safety of tea that the present invention proposes, be based in the sample measured matter and behind extraction and cleaning, generate colored compound, the instrument of a kind of colorimetric analysis that the principle that visible light is absorbed selectively according to this compound is set up with the developer reaction.
Claims (8)
1, a kind of quick detector for quality and safety of tea is provided with casing, is provided with the colorimetric pool lid at the upper surface of casing, it is characterized in that the following transmission-type colorimetric pool and the reflective colorimetric pool of being provided with side by side of the colorimetric pool lid of casing.
2, quick detector for quality and safety of tea as claimed in claim 1, it is characterized in that, wherein said transmission-type colorimetric pool is in order to place a rectangular cell body of a cuvette, the bottom surface sealing, top opening, the one side is provided with light source/monochromator, and the another side is provided with photoelectric detector relatively, and light source/monochromator and photoelectric detector connect corresponding.
3, quick detector for quality and safety of tea as claimed in claim 1, it is characterized in that, wherein said reflective colorimetric pool is a rectangular parallelepiped, its inside is provided with three access openings of " individual " font, the passway of both sides access opening is located on the two sides of reflective colorimetric pool, is equiped with light source/monochromator respectively; A photoelectric detector is installed in the passway in central passage hole on the bottom surface of reflective colorimetric pool; Article three, another passway of access opening is the coincidence passway that concentrates on reflective colorimetric pool upper surface, installs a chromatoplate.
4, quick detector for quality and safety of tea as claimed in claim 3 is characterized in that, is provided with a chromatoplate pressing plate on chromatoplate.
As claim 2 or 3 described quick detector for quality and safety of tea, it is characterized in that 5, wherein said light source/monochromator is super bright light emitting diode; Described photoelectric detector is a photoelectric sensor.
6, quick detector for quality and safety of tea as claimed in claim 5 is characterized in that, wherein transmission-type colorimetric pool and reflective colorimetric pool are made by plastic material, and chromatoplate is made with paper, glass or aluminium foil material.
7, quick detector for quality and safety of tea as claimed in claim 2 is characterized in that, the wherein said colorimetric pool lid of casing outer surface that places is connected on the casing.
8, quick detector for quality and safety of tea as claimed in claim 7 is characterized in that, wherein cuvette is standard quartz or glass cuvette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810117755A CN101644667A (en) | 2008-08-05 | 2008-08-05 | Quick detector for quality and safety of tea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810117755A CN101644667A (en) | 2008-08-05 | 2008-08-05 | Quick detector for quality and safety of tea |
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| CN101644667A true CN101644667A (en) | 2010-02-10 |
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| CN200810117755A Pending CN101644667A (en) | 2008-08-05 | 2008-08-05 | Quick detector for quality and safety of tea |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181112A (en) * | 2013-05-21 | 2014-12-03 | 浙江托普仪器有限公司 | Sixteen-channel pesticide residue rapid detector |
| CN107966435A (en) * | 2016-09-09 | 2018-04-27 | 美敦力公司 | Colorimetric gas detects |
| US11013843B2 (en) | 2016-09-09 | 2021-05-25 | Medtronic, Inc. | Peritoneal dialysis fluid testing system |
| US11313804B2 (en) | 2016-09-09 | 2022-04-26 | Medtronic, Inc | Fluid sensor apparatus |
| EP4063830A4 (en) * | 2019-11-22 | 2023-04-19 | BOE Technology Group Co., Ltd. | Analyzer and detection system |
| US11759557B2 (en) | 2011-04-29 | 2023-09-19 | Mozarc Medical Us Llc | Adaptive system for blood fluid removal |
| US11850344B2 (en) | 2021-08-11 | 2023-12-26 | Mozarc Medical Us Llc | Gas bubble sensor |
-
2008
- 2008-08-05 CN CN200810117755A patent/CN101644667A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11759557B2 (en) | 2011-04-29 | 2023-09-19 | Mozarc Medical Us Llc | Adaptive system for blood fluid removal |
| CN104181112A (en) * | 2013-05-21 | 2014-12-03 | 浙江托普仪器有限公司 | Sixteen-channel pesticide residue rapid detector |
| CN107966435A (en) * | 2016-09-09 | 2018-04-27 | 美敦力公司 | Colorimetric gas detects |
| US11013843B2 (en) | 2016-09-09 | 2021-05-25 | Medtronic, Inc. | Peritoneal dialysis fluid testing system |
| US11255831B2 (en) | 2016-09-09 | 2022-02-22 | Medtronic, Inc. | Colorimetric gas detection |
| US11313804B2 (en) | 2016-09-09 | 2022-04-26 | Medtronic, Inc | Fluid sensor apparatus |
| US11679186B2 (en) | 2016-09-09 | 2023-06-20 | Mozarc Medical Us Llc | Peritoneal dialysis fluid testing system |
| EP4063830A4 (en) * | 2019-11-22 | 2023-04-19 | BOE Technology Group Co., Ltd. | Analyzer and detection system |
| US11874215B2 (en) | 2019-11-22 | 2024-01-16 | Boe Technology Group Co., Ltd. | Analyzer and detection system |
| US11850344B2 (en) | 2021-08-11 | 2023-12-26 | Mozarc Medical Us Llc | Gas bubble sensor |
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Open date: 20100210 |