CN103454236B - A kind of accurately residual spectral method of detection of agriculture - Google Patents
A kind of accurately residual spectral method of detection of agriculture Download PDFInfo
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- CN103454236B CN103454236B CN201310458167.8A CN201310458167A CN103454236B CN 103454236 B CN103454236 B CN 103454236B CN 201310458167 A CN201310458167 A CN 201310458167A CN 103454236 B CN103454236 B CN 103454236B
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Abstract
The invention discloses a kind of accurately residual spectral method of detection of agriculture, step is as follows: first start stepper motor, rotational response room, when quartz glass turn to light that generating laser I launches just can from of outer ring through hole injection time, close stepper motor; Then in quartz glass, the residual sample of agriculture is injected by automatic perfusor; Open generating laser I again, fiber spectrometer first time gathers, and then closes generating laser I.So repeatedly, until detected all array quartz glass reaction rooms.The present invention adopts turntable, objective table, light supply apparatus, reaction chamber, the automatic perfusor of the residual sample of agriculture, light-receiving probe, fiber spectrometer, transmission gear and stepper motor combination, and reaction chamber has multiple quartz glass, once can detect multiple, or it is some in order to accurately detect further, the characteristic of array cross response can be utilized, improve the accuracy of qualitative and quantitative detection.
Description
Technical field
The present invention relates to a kind of spectral method of detection, particularly relate to a kind of accurately residual spectral method of detection of agriculture.
Background technology
The detection method of existing microscratch amount residues of pesticides, using more is in recent years chromatography, comprises the large-scale instrument analyses such as vapor-phase chromatography, high performance liquid chromatography, compounds GC-MS, liquid-mass chromatography.These methods can keep accuracy and the accuracy of data, but operating process is complicated, and sense cycle is long, and reagent consumption is large, needs professional to operate, and this causes serious impact just to the universal of Pesticides Testing.
Recent years Chinese scholars also research concentrate on a biosensor, biology sensor mainly based on enzyme suppression principle or directly utilize organophosphor hydrolytic enzyme to detect.AChE can be suppressed by organic phosphorus compound, carbamate chemicals for agriculture, but it also can be suppressed by other compounds simultaneously, so the selectivity of AChE sensor is poor, the total amount of detection organophosphorus pesticide can only be used to or carry out scalping, the quick detection of microscratch amount organophosphorus pesticide can not be realized.
Take ultraviolet spectrophotometer as detecting device, porphyrin photochromics is the On Detection of Organophosphorus Pesticide of indicator, as " the bafta scene photometer of porphyrin solution and porphyrin dyeing detects organophosphorus pesticide basudin " literary composition of " dyestuff and pigment " (" Dyes and Pigments ") the 74th volume 176-180 page in 2007, the open basudin method detected is: certain density Meso-tetraphenylporphyrin (TPP) and basudin are dissolved in organic solvent N, in dinethylformamide (DMF), with Cary 300 ultraviolet spectrophotometer and the spectrum of Grams/AI apparatus measures solution and the spectrum change before and after analytical reactions, in the cuvette that absorption spectrum is corresponding, the concentration linear relationship point PSI-Plot of basudin analyzes.The shortcoming of the method is, the detection least concentration of the porphyrin indicator selected to organophosphorus pesticide basudin is 0.5ppm, and the linear relationship of absorbance difference and basudin concentration is △ A=0.00280 × [diazinon]+0.00417 (R
2=0.792).Sensitivity and Monitoring lower-cut all can not meet the requirement of the detection of organic phosphorus pesticide of microscratch amount in food.
And for example " the array detection systems research of multimetering formula poison gas and the spectral analysis " of volume the 1st phase in " photoelectric project " January the 36th in 2009 is civilian, disclosed array detection of poison gas system, be sensitive materials with metalloporphyrin bar, detect the identification of poison gas kind and trace concentration, this system is made up of optical detecting module, poison gas stream module, gauge head precision mechanical transmission regular inspection module, embedded hardware module and Data Management Analysis and software model.
The residual detection of existing agriculture often adopts colorimetric card, all form man-to-man detection, and accuracy of detection is lower.
Summary of the invention
For above shortcomings in prior art, the invention provides one once can detect multiple, or some in order to accurately detect further, the characteristic of array cross response can be utilized, improve the residual spectral method of detection of accurate agriculture of qualitative and quantitative detection accuracy.
In order to solve the problems of the technologies described above, present invention employs following technical scheme:
A kind of accurately residual spectral method of detection of agriculture, adopt a kind of pick-up unit in the method, this pick-up unit comprises turntable, objective table, light supply apparatus, reaction chamber, the automatic perfusor of the residual sample of agriculture, light-receiving probe, fiber spectrometer, transmission gear and stepper motor; Described turntable is hollow structure, the bottom of turntable through objective table and with objective table clearance fit, the end face of described turntable is parallel with the upper surface of objective table; Described
passmoving gear be enclosed within turntable bottom and with the bottom secure fit of turntable, described stepper motor is arranged on the below of objective table, and the output shaft of stepper motor is provided with driving gear, described driving gear with
passmoving gear tooth engages; Described light supply apparatus comprises the metal tube of hollow square frame box, generating laser I and hollow, described hollow square frame box is arranged on the top of metal tube, communicate with in metal tube in hollow square frame box, four sidewalls of described hollow square frame box are respectively equipped with generating laser mounting hole, a generating laser I is all installed in each generating laser mounting hole; Described reaction chamber comprises disc base plate, outer ring and inner ring, described outer ring and inner ring are all arranged on disc base plate, inner ring is positioned at outer ring, uniform between outer ring and inner ring multiple dividing plate is set, form slot between adjacent two dividing plates, described outer ring and inner ring distribute with the middle part correspondence position of each slot and arrange through hole; The middle part perforate of described disc base plate, described metal tube is through disc base plate and turntable, and reaction chamber is fixedly mounted on turntable, turntable by bearing holder (housing, cover) on metal tube; Hollow square frame box is positioned at inner ring, and the generating laser I on described hollow square frame box is in same level height with the through hole on inner ring and outer ring; The automatic perfusor of the residual sample of described agriculture is arranged on turntable, and the automatic perfusor of the residual sample of agriculture comprises rectilinear orbit, through stepper motor, slide block and syringe draw-in groove; Described through stepper motor and syringe draw-in groove are separately positioned on the two ends of rectilinear orbit, described slide block to be arranged on rectilinear orbit and to be slidably matched with rectilinear orbit, one end of described slide block and the screw mandrel of through stepper motor are fixed, and the other end of slide block arranges a groove; Described light-receiving probe is four, be distributed on outside outer ring, and be in same level height with the through hole on outer ring, and four light-receiving probes and four generating laser I one_to_one corresponding on hollow square frame box, described fiber spectrometer is arranged on objective table, and described light-receiving probe is connected with fiber spectrometer.
This detection method comprises the steps:
1) in each slot, the transparent quartz glass that one has added responsive thing is put into;
2) stepper motor is started, stepper motor drives driving gear to rotate, and driving gear drives transmission gear to rotate, and transmission gear drives turntable to rotate, turntable drives again the rotation of the reaction chamber on it, when quartz glass turns to the light that generating laser I launches
linewhen just can penetrate from of an outer ring through hole, close stepper motor;
3) in syringe, add the residual sample of agriculture, be stuck in by syringe in syringe draw-in groove, the pistons end of syringe is positioned at the groove of the other end of slide block, and the outlet of the needle tubing of syringe is positioned at directly over quartz glass; Moved by through driving stepper motor slide block, the piston on slipper push syringe, in quartz glass, inject each residual sample of agriculture extracted;
4) generating laser I is opened, the light that generating laser I is launched
linethrough the through hole on the through hole on inner ring, quartz glass and outer ring, light-receiving probe receives this light
line, fiber spectrometer first time gathers, and then closes the light source of generating laser I;
5) stepper motor is started, rotational response room, the light making next quartz glass turn to generating laser I to launch
linewhen just can penetrate from of an outer ring through hole, close stepper motor;
6) in quartz glass, the residual sample of agriculture is injected by syringe;
7) open generating laser I, fiber spectrometer second time gathers, and then closes the light source of generating laser I;
8) repeat above-mentioned steps 5), 6) and 7) quartz glass in reaction chamber is detected successively, to the last a quartz glass is detected complete.
As a preferred embodiment of the present invention, this pick-up unit also comprises generating laser II for positioning quartz glass and laser pickoff, described generating laser II is arranged on the outside of hollow square frame box, be equipped with a laser pickoff in the inner side of inner ring with each slot corresponding position, described generating laser II and laser pickoff be positioned at same level height.
As another kind of preferred version of the present invention, the height of described slot is 2/3rds of quartz glass height.
The invention has the beneficial effects as follows: the present invention adopts turntable, objective table, light supply apparatus, reaction chamber, the automatic perfusor of the residual sample of agriculture, light-receiving probe, fiber spectrometer, transmission gear and stepper motor combination, and reaction chamber has multiple quartz glass, once can detect multiple, or it is some in order to accurately detect further, the characteristic of array cross response can be utilized, improve the accuracy of qualitative and quantitative detection.
Accompanying drawing explanation
Fig. 1 is the structural representation of the residual spectrum detection device of a kind of accurate agriculture;
Fig. 2 is the structural representation after the residual spectrum detection device all parts of a kind of accurate agriculture decomposes;
Fig. 3 is the structural representation one of turntable;
Fig. 4 is the structural representation two of turntable;
Fig. 5 is the structural representation of light supply apparatus;
Fig. 6 is the structural representation one of reaction chamber;
Fig. 7 is the structural representation two of reaction chamber;
Fig. 8 is the structural representation of quartz glass;
Fig. 9 is the structural representation of the automatic perfusor of the residual sample of agriculture.
In accompanying drawing: 1-turntable; 2-objective table; 3-light-receiving is popped one's head in; 4-fiber spectrometer; 5-transmission gear; 6-stepper motor; 7-driving gear; 8-hollow square frame box; 9-generating laser I; 10-metal tube; 11-disc base plate; 12-outer ring; 13-inner ring; 14-quartz glass; 15-dividing plate; 16-slot; 17-through hole; 18-rectilinear orbit; 19-through stepper motor; 20-slide block; 21-syringe draw-in groove; 22-syringe; 23-screw mandrel; 24-groove; 25-boss; 26-supporting plate; 27-backing plate; 28-support.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
A kind of accurately residual spectral method of detection of agriculture, have employed a kind of pick-up unit in the method, as shown in Figure 1, 2, pick-up unit comprises turntable 1, objective table 2, light supply apparatus, reaction chamber, the automatic perfusor of the residual sample of agriculture (not drawing in Fig. 1,2), light-receiving probe 3, fiber spectrometer 4, transmission gear 5, stepper motor 6 and for the generating laser I that positions quartz glass 14 and laser pickoff (not drawing in Fig. 1,2) to the structure of this pick-up unit.
Wherein, turntable 1 is hollow structure, and as shown in Figure 3,4, the bottom of turntable 1 has a boss 25, the boss of the bottom of turntable 1 25 through objective table 2 and with objective table 2 clearance fit, the end face of turntable 1 is parallel with the upper surface of objective table 2.
passon the boss 25 that moving gear 5 is enclosed within the bottom of turntable 1 and with the bottom secure fit of turntable 1.Stepper motor 6, by the below of support installing at objective table 2, the output shaft of stepper motor 6 is provided with driving gear 7, driving gear 7 with
passmoving gear 5 tooth engages, and drive driving gear 7 to rotate when stepper motor 6 rotates, driving gear 7 drives
passmoving gear 5 rotates, and then drives turntable 1 to rotate.
As shown in Figure 5, light supply apparatus comprises the metal tube 10 of hollow square frame box 8, generating laser I 9 and hollow to the structure of light supply apparatus.A supporting plate 26 is fixedly installed at the top of metal tube 10, hollow square frame box 8 is arranged on supporting plate 26, hollow square frame box 8 is arranged on the top of metal tube 10 by this supporting plate 26, the middle part of supporting plate 26 has a through hole, communicate with in metal tube 10 in hollow square frame box 8, four sidewalls of hollow square frame box 8 are respectively equipped with generating laser mounting hole, a generating laser I 9 is all installed in each generating laser mounting hole.The hollow square frame box 8 at top is made up of metal material, for fixed laser transmitter I 9, and has the effect of heat radiation, and the metal tube 10 of the hollow of bottom is used for threading, and line can be drawn from the opening metal tube 10, and generating laser I 9 is connected with power supply.
As shown in Figure 6,7, reaction chamber comprises disc base plate 11, outer ring 12 and inner ring 13 to the structure of reaction chamber.Outer ring 12 and inner ring 13 are all arranged on disc base plate 11, inner ring 13 is positioned at outer ring 12, uniformly between outer ring 12 and inner ring 13 arrange in multiple dividing plate 15(the present embodiment, uniformly between outer ring 12 and inner ring 13 be provided with ten dividing plates 15), slot 16 is formed between adjacent two dividing plates 15, a quartz glass 14(is put into as shown in Figure 8) in each slot 16, the shape of quartz glass 14 and the shape of slot 16 similar, the height of slot 16 is 2/3rds of quartz glass 14 height, so that quartz glass 14 inserts slot 16 or take out quartz glass 14 in slot 16, outer ring 12 and inner ring 13 distribute with the middle part correspondence position of each slot 16 and arrange through hole 17.The middle part perforate of disc base plate 11, metal tube 10 is through disc base plate 11 and turntable 1, and reaction chamber is fixedly mounted on turntable 1, turntable 1 by bearing holder (housing, cover) on metal tube 10.Hollow square frame box 8 is positioned at inner ring 13, and the generating laser I 9 on hollow square frame box 8 is in same level height with the through hole 17 on inner ring 13 and outer ring 12.The height of through hole 17 is 1/2nd of quartz glass 14 height, the signal of reaction zone can be detected.Disc base plate 11, outer ring 12, inner ring 13 and metal tube 10 are coaxially set.When turntable 1 rotates, turntable 1 just can drive the reaction chamber on it to rotate together.
The automatic perfusor of the residual sample of agriculture is arranged on objective table 2, and as shown in Figure 9, the automatic perfusor of the residual sample of agriculture comprises rectilinear orbit 18, through stepper motor 19, slide block 20 and syringe draw-in groove 21 to the structure of the automatic perfusor of the residual sample of agriculture.Objective table 2 is provided with a backing plate 27, backing plate 27 is installed rectilinear orbit 18, through stepper motor 19 and syringe draw-in groove 21, through stepper motor 19 and syringe draw-in groove 21 are separately positioned on the two ends of rectilinear orbit 18.Slide block 20 to be arranged on rectilinear orbit 18 and to be slidably matched with rectilinear orbit 18, and one end of slide block 20 and the screw mandrel 23 of through stepper motor 19 are fixed, and the other end of slide block 20 arranges a groove 24.When being stuck in syringe draw-in groove 21 by the syringe of syringe 22, the pistons end of syringe 22 is positioned at the groove 24 of the other end of slide block 20, and the outlet of the needle tubing of syringe 22 is positioned at directly over quartz glass 14.Through stepper motor 19 rotates, screw mandrel 23 drives slide block 20 to move, and then the piston of injector-actuated 22 moves, to control to the reservoir quantity in quartz glass 14, the residual sample of main injection agriculture, quantitative and qualitative detection is carried out in responsive thing and the residual change of reacting front and back fluorescence of agriculture.
Light-receiving probe 3 is four, four light-receiving probes 3 are all supported on objective table 2 by support 28, four light-receivings probe 3 is distributed on the outside of outer ring 12 and less with outer ring 12 spacing, four light-receiving probes 3 are in same level height with the through hole 17 on outer ring 12, and four light-receiving probes 3 and four generating laser I 9 one_to_one corresponding on hollow square frame box 8.Fiber spectrometer 4 is arranged on objective table 2, and light-receiving probe 3 is connected with fiber spectrometer 4, both can be aggregated in y-type optical fiber more than by four light-receiving probes 3, and then be connected on a fiber spectrometer 4; Also two light-receivings probe 3 can be one group to be connected on a fiber spectrometer 4, and two other light-receiving probe 3 is one group is connected on another one fiber spectrometer 4.Generating laser II is arranged on the outside of hollow square frame box 8, and be equipped with a laser pickoff in the inner side of inner ring 13 with each slot 16 corresponding position, generating laser II and laser pickoff are positioned at same level height.In reaction chamber rotation process, laser pickoff, therefore, positions quartz glass 14 with generating laser II and laser pickoff to the position determining that in reaction chamber, quartz glass 14 rotates with the signal receiving generating laser II and send.
This detection method comprises the steps:
1) in each slot 16, put into the transparent quartz glass 14 that has added responsive thing.
2) stepper motor 6 is started, stepper motor 6 drives driving gear 7 to rotate, driving gear 7 drives transmission gear 5 to rotate, transmission gear 5 drives turntable 1 to rotate, turntable 1 drives again the rotation of the reaction chamber on it, positioned by the generating laser II that plays the role of positioning and the rotation of laser pickoff to reaction chamber, when quartz glass 14 turns to the light that generating laser I 9 launches
linewhen just can penetrate from of outer ring 12 through hole 17, close stepper motor 6.
3) in syringe 22, add the residual sample of agriculture, be stuck in by syringe 22 in syringe draw-in groove 21, the pistons end of syringe 22 is positioned at the groove 24 of the other end of slide block 20, and the outlet of the needle tubing of syringe 22 is positioned at directly over quartz glass 14; Drive slide block 20 to move by through stepper motor 19, the piston on slide block 20 pushing syringe 22, in quartz glass 14, inject each residual sample of agriculture extracted.
4) generating laser I 9 is opened, the light that generating laser I 9 is launched
linethrough the through hole 17 on the through hole 17 on inner ring 13, quartz glass 14 and outer ring 12, light-receiving probe 3 receives this light
line, fiber spectrometer 4 first time gathers, and then closes the light source of generating laser I 9.
5) stepper motor 6 is started, rotational response room, the light making next quartz glass 14 turn to generating laser I 9 to launch
line(can initial apertures be selected when design, as first position detected, so that subsequent parallel test is all carried out under same condition) when just can penetrate from of outer ring 12 through hole 17, close stepper motor 6.
6) in quartz glass 14, the residual sample of agriculture is injected by syringe 22.
7) open generating laser I 9, fiber spectrometer 4 second time gathers, and then closes the light source of generating laser I 9.
8) repeat above-mentioned steps 5), 6) and 7) quartz glass 14 in reaction chamber is detected successively, to the last a quartz glass 14 is detected complete.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. the residual spectral method of detection of accurate agriculture, it is characterized in that: adopt a kind of pick-up unit in the method, this pick-up unit comprises turntable (1), objective table (2), light supply apparatus, reaction chamber, the automatic perfusor of the residual sample of agriculture, light-receiving probe (3), fiber spectrometer (4), transmission gear (5) and stepper motor (6); Described turntable (1) is hollow structure, the bottom of turntable (1) through objective table (2) and with objective table (2) clearance fit, the end face of described turntable (1) is parallel with the upper surface of objective table (2); Described
passmoving gear (5) be enclosed within turntable (1) bottom and with the bottom secure fit of turntable (1), described stepper motor (6) is arranged on the below of objective table (2), the output shaft of stepper motor (6) is provided with driving gear (7), described driving gear (7) with
passmoving gear (5) tooth engages; Described light supply apparatus comprises the metal tube (10) of hollow square frame box (8), generating laser I (9) and hollow, described hollow square frame box (8) is arranged on the top of metal tube (10), communicate with in metal tube (10) in hollow square frame box (8), four sidewalls of described hollow square frame box (8) are respectively equipped with generating laser mounting hole, a generating laser I (9) is all installed in each generating laser mounting hole; Described reaction chamber comprises disc base plate (11), outer ring (12) and inner ring (13), described outer ring (12) and inner ring (13) are all arranged on disc base plate (11), inner ring (13) is positioned at outer ring (12), uniform between outer ring (12) and inner ring (13) multiple dividing plate (15) is set, form slot (16) between adjacent two dividing plates (15), described outer ring (12) and inner ring (13) are gone up and are distributed with the middle part correspondence position of each slot (16) and arrange through hole (17); The middle part perforate of described disc base plate (11), described metal tube (10) is through disc base plate (11) and turntable (1), and reaction chamber is fixedly mounted on turntable (1), turntable (1) by bearing holder (housing, cover) on metal tube (10); Hollow square frame box (8) is positioned at inner ring (13), and the generating laser I (9) on described hollow square frame box (8) is in same level height with the through hole (17) on inner ring (13) and outer ring (12); The automatic perfusor of the residual sample of described agriculture is arranged on objective table (2), and the automatic perfusor of the residual sample of agriculture comprises rectilinear orbit (18), through stepper motor (19), slide block (20) and syringe draw-in groove (21); Described through stepper motor (19) and syringe draw-in groove (21) are separately positioned on the two ends of rectilinear orbit (18), described slide block (20) is arranged on rectilinear orbit (18) and goes up and be slidably matched with rectilinear orbit (18), one end of described slide block (20) and the screw mandrel (23) of through stepper motor (19) are fixed, and the other end of slide block (20) arranges a groove (24); Described light-receiving probe (3) is four, be distributed on outer ring (12) outward, and be in same level height with the through hole (17) on outer ring (12), and four light-receivings probe (3) and four generating lasers I (9) one_to_one corresponding on hollow square frame box (8), described fiber spectrometer (4) is arranged on objective table (2), and described light-receiving probe (3) is connected with fiber spectrometer (4);
This detection method comprises the steps:
1) in each slot (16), put into the transparent quartz glass (14) that has added responsive thing;
2) stepper motor (6) is started, stepper motor (6) drives driving gear (7) to rotate, driving gear (7) drives transmission gear (5) to rotate, transmission gear (5) drives turntable (1) to rotate, turntable (1) drives again the rotation of the reaction chamber on it, when quartz glass (14) turn to light that generating laser I (9) launches just can from through hole (17) injection of outer ring (12) time, close stepper motor (6);
3) in syringe (22), the residual sample of agriculture is added, syringe (22) is stuck in syringe draw-in groove (21), the pistons end of syringe (22) is positioned at the groove (24) of the other end of slide block (20), and the outlet of the needle tubing of syringe (22) is positioned at directly over quartz glass (14); Drive slide block (20) mobile by through stepper motor (19), the piston on slide block (20) pushing syringe (22), in quartz glass (14), inject each residual sample of agriculture extracted;
4) generating laser I (9) is opened, the light that generating laser I (9) is launched
linethrough the through hole (17) on the through hole (17) on inner ring (13), quartz glass (14) and outer ring (12), light-receiving probe (3) receives this light
line, fiber spectrometer (4) first time gathers, and then closes the light source of generating laser I (9);
5) stepper motor (6) is started, rotational response room, the light making next quartz glass (14) turn to generating laser I (9) to launch
linewhen just can penetrate from a through hole (17) of outer ring (12), close stepper motor (6);
6) in quartz glass (14), the residual sample of agriculture is injected by syringe (22);
7) open generating laser I (9), fiber spectrometer (4) second time gathers, and then closes the light source of generating laser I (9);
8) repeat above-mentioned steps 5), 6) and 7) quartz glass (14) in reaction chamber is detected successively, to the last quartz glass (14) is detected complete.
2. the residual spectral method of detection of the accurate agriculture of one according to claim 1, it is characterized in that: this pick-up unit also comprises generating laser II for positioning quartz glass (14) and laser pickoff, described generating laser II is arranged on the outside of hollow square frame box, be equipped with a laser pickoff in the inner side of inner ring (13) with each slot (16) corresponding position, described generating laser II and laser pickoff be positioned at same level height.
3. the residual spectral method of detection of the accurate agriculture of one according to claim 1, is characterized in that: the height of described slot (16) is 2/3rds of quartz glass (14) height.
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| CN105259358A (en) * | 2015-11-10 | 2016-01-20 | 中国科学院重庆绿色智能技术研究院 | Multi-channel rotary type Raman spectroscopy detection sample pool device and detecting method thereof |
| CN107744784B (en) * | 2016-03-24 | 2019-12-06 | 浙江苏明阀门有限公司 | Gas-liquid reaction parallel test tank |
| CN106290948A (en) * | 2016-08-05 | 2017-01-04 | 中山大学 | A kind of full-automatic spin turned-in annular ground sample cushion cap device |
| CN114279989A (en) * | 2021-12-30 | 2022-04-05 | 江苏大同盟制药有限公司 | Method and system for measuring anti-Xa factor titer of low-molecular-weight heparin calcium injection |
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| US7700928B2 (en) * | 2007-01-25 | 2010-04-20 | Etaluma, Inc. | Apparatus and method for interleaving detection of fluorescence and luminescence |
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| CN1683922A (en) * | 2004-04-14 | 2005-10-19 | 深圳市无公害农产品质量监督检验站 | Analysing method for organic phosphor pesticide residue of vegetables |
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