CN116359190B - Method for detecting phthalate plasticizer in plastic toy by fluorescence method - Google Patents
Method for detecting phthalate plasticizer in plastic toy by fluorescence method Download PDFInfo
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- CN116359190B CN116359190B CN202310346532.XA CN202310346532A CN116359190B CN 116359190 B CN116359190 B CN 116359190B CN 202310346532 A CN202310346532 A CN 202310346532A CN 116359190 B CN116359190 B CN 116359190B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 229920003023 plastic Polymers 0.000 title claims abstract description 21
- 239000004033 plastic Substances 0.000 title claims abstract description 21
- 238000002795 fluorescence method Methods 0.000 title claims abstract description 15
- 239000008029 phthalate plasticizer Substances 0.000 title description 2
- 230000007246 mechanism Effects 0.000 claims abstract description 58
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims abstract description 23
- 239000004014 plasticizer Substances 0.000 claims abstract description 13
- 239000000243 solution Substances 0.000 claims description 24
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 12
- 239000012086 standard solution Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 9
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 239000012634 fragment Substances 0.000 claims description 8
- 230000010355 oscillation Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 6
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 239000003814 drug Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010028400 Mutagenic effect Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 210000000750 endocrine system Anatomy 0.000 description 1
- 230000001076 estrogenic effect Effects 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000243 mutagenic effect Toxicity 0.000 description 1
- 230000003505 mutagenic effect Effects 0.000 description 1
- -1 phthalate compound Chemical class 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The application discloses a method for detecting phthalate plasticizers in plastic toys by a fluorescence method, which comprises a box body, wherein a first movable groove is penetrated through one side of the box body, a second movable groove is penetrated through the other side of the box body, a swinging mechanism and a driving mechanism are respectively arranged in the box body, the swinging mechanism comprises a supporting plate, a first movable frame and a second movable frame, the supporting plate is fixedly connected in the box body, a sliding groove is penetrated through the front surface of the supporting plate, a shaft lever is fixedly connected to the supporting plate, and a first gear is rotationally connected to the shaft lever.
Description
Technical Field
The application relates to the technical field of plasticizer detection, in particular to a method for detecting phthalate plasticizers in plastic toys by a fluorescence method.
Background
The phthalate compound is mainly used as a plasticizer to be added into a high polymer to increase the flexibility of the material, and is widely applied to hundreds of products such as toys, food packaging materials, medical blood bags and rubber tubes, vinyl floors and wallpaper, cleaning agents, lubricating oil, personal care products and the like. The phthalate has estrogen-like effect, can interfere endocrine system of organism, affect normal secretion of hormone in organism, and can generate teratogenic, carcinogenic and mutagenic effects. Therefore, the detection of phthalates is increasingly important.
When the existing phthalate is detected, the test sample and the medicine reagent are generally required to be mixed, and the test tube is generally directly shaken manually during mixing, so that the manual shaking efficiency is low due to the large number of the test tubes, and the fatigue of people is increased.
Disclosure of Invention
The application aims to provide a method for detecting phthalate plasticizers in plastic toys by a fluorescence method, which solves the following technical problems: when the existing phthalate is detected, the test sample and the medicine reagent are generally required to be mixed, and the test tube is generally directly shaken manually during mixing, so that the manual shaking efficiency is low due to the large number of the test tubes, and the fatigue of people is increased.
The aim of the application can be achieved by the following technical scheme:
a method for detecting phthalate plasticizers in plastic toys by using a fluorescence method comprises the following steps:
s1, firstly, placing a plurality of test tubes on a clamping mechanism on oscillation equipment, taking tetrahydrofuran solution with gradient phthalate content as a standard solution, crushing plastic toys, picking up fragments of the plastic toys, placing the fragments in the test tubes, adding tetrahydrofuran into each test tube, adding dioxane and strong alkali solution into the standard solution and the test tubes respectively, plugging a test tube opening by using a sealing plug, and starting a motor to drive the oscillation mechanism to move so as to fully shake each test tube, thereby hydrolyzing to obtain phthalate;
s2, sequentially adding a hydrochloric acid solution, a PBS solution, a cupric nitrate solution, a hydrogen peroxide solution, manganese dioxide and a strong alkali solution into the standard solution and the test tubes, blocking the opening of the test tubes by using a sealing plug, and starting the motor again to drive the swinging mechanism to move so as to fully shake each test tube;
s3, finally, carrying out fluorescence intensity measurement on the solution in the test tube by using a fluorescence method, comparing the measurement result corresponding to the solution in the test tube with the measurement result corresponding to the standard solution to obtain the phthalate content,
as a further scheme of the application: the oscillating device comprises a box body, a first movable groove is formed in one side of the box body in a penetrating mode, a second movable groove is formed in the other side of the box body in a penetrating mode, and an oscillating mechanism and a driving mechanism are respectively arranged in the box body.
The swing mechanism comprises a supporting plate, a first movable frame and a second movable frame, wherein the supporting plate is fixedly connected in the box body, a sliding groove is formed in the front face of the supporting plate in a penetrating mode, a shaft rod is fixedly connected to the supporting plate, a first gear is connected to the shaft rod in a rotating mode, a swing arm is connected to the first gear in a rotating mode, the swing arm is movably connected with the first movable frame and the second movable frame through a transmission mechanism, clamping mechanisms are arranged on the outer sides of the first movable frame and the second movable frame, the first movable frame and the second movable frame are movably connected with the shaft rod through a supporting mechanism, and the first gear is in transmission connection with a driving mechanism.
As a further scheme of the application: the driving mechanism comprises a motor, the motor is fixedly connected to the front face of the box body, the output end of the motor is fixedly connected with a rotating shaft, one end of the rotating shaft penetrates through the box body and is rotationally connected with the inside of the box body, a second gear is fixedly connected to the outer surface of the rotating shaft, and the second gear is meshed with the first gear.
As a further scheme of the application: the transmission mechanism comprises a cylinder, the outer surface of the cylinder is matched with the inner part of the chute, a cross rod is fixedly connected to the cylinder, and the cross rod is rotationally connected with the swing arm, the first movable frame and the second movable frame.
As a further scheme of the application: the clamping mechanism comprises a first groove and a second groove, the first groove is formed in one side of the first movable frame, first clamping arms are connected in the first groove in a sliding mode, two first clamping arms are arranged, a first screw rod is connected in the first groove in a rotating mode, one end of the first screw rod penetrates through the first groove and extends to the outside of the first movable frame, the first screw rod is connected with the first clamping arms in a threaded mode, the second groove is formed in one side of the second movable frame, second clamping arms are connected in the second groove in a sliding mode, two second clamping arms are arranged in the second groove in a rotating mode, one end of the second screw rod penetrates through the second groove and extends to the outside of the second movable frame, and the second screw rod is connected with the second clamping arms in a threaded mode.
As a further scheme of the application: the first screw rod and the second screw rod are both bidirectional screw rods, and one ends of the first screw rod and the second screw rod are both fixedly connected with a rotating block.
As a further scheme of the application: the supporting mechanism comprises a first supporting rod and a second supporting rod, the first supporting rod is fixedly connected to the first movable frame, a first inclined rod is connected to the first supporting rod in a rotating mode, the first inclined rod is connected with the shaft rod in a rotating mode, the second supporting rod is fixedly connected to the second movable frame, a second inclined rod is connected to the second supporting rod in a rotating mode, and the second inclined rod is connected with the shaft rod in a rotating mode.
As a further scheme of the application: the first movable frame comprises a first frame body and a second frame body, the first frame body is connected with the first movable groove in a sliding mode, the second movable frame is connected with the second movable groove in a sliding mode, and a plurality of swinging mechanisms are arranged.
Advantageous effects
The application provides a method for detecting phthalate plasticizers in plastic toys by a fluorescence method. Compared with the prior art, the method has the following beneficial effects:
(1) According to the application, the test tubes are clamped by the clamping mechanism, and the swing arm is driven to move by the first gear, so that the first movable frame and the second movable frame are driven to reciprocate, a plurality of test tubes are driven to synchronously reciprocate, the shaking efficiency is high, the mixing effect is improved, the use is convenient, and the working efficiency is improved.
(2) According to the application, under the matched use of the first groove, the second groove, the first clamping arm, the first screw rod, the second clamping arm and the second screw rod, the clamping of test tubes with different diameters is facilitated, and the use is convenient.
Drawings
Fig. 1 is a perspective view of an oscillation device in the present application;
FIG. 2 is a front cross-sectional view of an oscillation device of the present application;
FIG. 3 is a perspective view of the swing mechanism of the present application;
FIG. 4 is an exploded view of the swing mechanism of the present application;
FIG. 5 is a partial top view of the first movable frame of the present application;
fig. 6 is a partial plan view of a second movable frame of the present application.
In the figure: 1. a case; 2. a first movable groove; 3. a second movable groove; 4. a swinging mechanism; 401. a support plate; 402. a first movable frame; 4021. a first frame body; 4022. a second frame body; 403. a second movable frame; 404. a chute; 405. a shaft lever; 406. a first gear; 407. swing arms; 408. a clamping mechanism; 4081. a first groove; 4082. a second groove; 4083. a first clamp arm; 4084. a first screw rod; 4085. a second clamp arm; 4086. a second screw rod; 409. a support mechanism; 4091. a first support bar; 4092. a second support bar; 4093. a first diagonal bar; 4094. a second diagonal bar; 410. a transmission mechanism; 4101. a cylinder; 4102. a cross bar; 5. a driving mechanism; 51. a motor; 52. a rotating shaft; 53. a second gear; 6. and rotating the block.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-6, the application discloses a method for detecting phthalate plasticizers in plastic toys by a fluorescence method, which comprises the following steps:
s1, firstly, placing a plurality of test tubes on a clamping mechanism 408 on oscillation equipment, taking tetrahydrofuran solution with gradient phthalate content as a standard solution, crushing plastic toys, picking up fragments of the plastic toys, placing the fragments in the test tubes, adding tetrahydrofuran into each test tube, adding dioxane and strong alkali solution into the standard solution and the test tubes respectively, plugging a test tube port by using a sealing plug, starting a motor 51 to drive the oscillation mechanism 4 to move, and fully shaking each test tube, so that phthalate is obtained by hydrolysis;
s2, sequentially adding a hydrochloric acid solution, a PBS solution, a cupric nitrate solution, a hydrogen peroxide solution, manganese dioxide and a strong alkali solution into the standard solution and the test tubes, plugging the opening of the test tubes by using a sealing plug, and starting the motor 51 again to drive the swinging mechanism 4 to move so as to fully shake each test tube;
and S3, finally, carrying out fluorescence intensity measurement on the solution in the test tube by using a fluorescence method, and comparing the measurement result corresponding to the solution in the test tube with the measurement result corresponding to the standard solution to obtain the phthalate content.
The oscillating device comprises a box body 1, wherein a first movable groove 2 is formed in one side of the box body 1 in a penetrating manner, a second movable groove 3 is formed in the other side of the box body 1 in a penetrating manner, and an oscillating mechanism 4 and a driving mechanism 5 are respectively arranged in the box body 1; the swing mechanism 4 comprises a supporting plate 401, a first movable frame 402 and a second movable frame 403, the supporting plate 401 is fixedly connected in the box body 1, a sliding groove 404 is formed in the front face of the supporting plate 401 in a penetrating mode, a shaft lever 405 is fixedly connected to the supporting plate 401, a first gear 406 is connected to the shaft lever 405 in a rotating mode, a swing arm 407 is connected to the first gear 406 in a rotating mode, the swing arm 407 is movably connected with the first movable frame 402 and the second movable frame 403 through a transmission mechanism 410, clamping mechanisms 408 are arranged on the outer sides of the first movable frame 402 and the second movable frame 403, the first movable frame 402 and the second movable frame 403 are movably connected with the shaft lever 405 through supporting mechanisms 409, the first gear 406 is in transmission connection with a driving mechanism 5, the test tubes are clamped through the clamping mechanisms 408, the first gear 406 is used for driving the swing arm 407 to move, the first movable frame 402 and the second movable frame 403 are driven to reciprocate, a plurality of test tubes are driven to reciprocate synchronously, the swing efficiency is high, the mixing effect is improved, the use efficiency is improved, and the work efficiency is improved.
The driving mechanism 5 comprises a motor 51, the motor 51 is electrically connected with an external power supply and is controlled by an external control program, the motor 51 is fixedly connected to the front face of the box body 1, the output end of the motor 51 is fixedly connected with a rotating shaft 52, one end of the rotating shaft 52 penetrates through the box body 1 and is rotationally connected with the inside of the box body 1, a second gear 53 is fixedly connected to the outer surface of the rotating shaft 52, the second gear 53 is meshed with the first gear 406, and the number of the second gears 53 is the same as that of the first gears 406.
The driving mechanism 410 includes a cylinder 4101, an outer surface of the cylinder 4101 is adapted to an inner portion of the chute 404, a cross bar 4102 is fixedly connected to the cylinder 4101, and the cross bar 4102 is rotatably connected to the swing arm 407, the first movable frame 402, and the second movable frame 403.
The fixture 408 includes first recess 4081 and second recess 4082, first recess 4081 is seted up on one side of first adjustable shelf 402, sliding connection has first arm lock 4083 in the first recess 4081, first arm lock 4083 is provided with two, the rotation is connected with first lead screw 4084 in first recess 4081, the one end of first lead screw 4084 runs through first recess 4081 and extends to the outside of first adjustable shelf 402, threaded connection between first lead screw 4084 and the first arm lock 4083, second recess 4082 is seted up on one side of second adjustable shelf 403, sliding connection has second arm lock 4085 in the second recess 4082, second arm lock 4085 is provided with two, rotation is connected with second lead screw 4086 in the second recess 4082, the one end of second lead screw 4086 runs through second recess 4082 and extends to the outside of second adjustable shelf 403, the second is connected with arm lock 4086 and second arm lock 4085, can also do not play the effect in the same way as the first arm lock 4085, and the second arm lock 4085 is used to the second arm lock 4085, and the second arm lock 4085 is not used for the test tube, and the clamping effect is good for the second test tube, and the second test tube is not used.
The first screw 4084 and the second screw 4086 are two-way screws, and one ends of the first screw 4084 and the second screw 4086 are fixedly connected with the rotating block 6.
The supporting mechanism 409 comprises a first supporting rod 4091 and a second supporting rod 4092, the first supporting rod 4091 is fixedly connected to the first movable frame 402, a first inclined rod 4093 is rotatably connected to the first supporting rod 4091, the first inclined rod 4093 is rotatably connected with the shaft rod 405, the second supporting rod 4092 is fixedly connected to the second movable frame 403, a second inclined rod 4094 is rotatably connected to the second supporting rod 4092, and the second inclined rod 4094 is rotatably connected with the shaft rod 405.
The first movable frame 402 includes a first frame body 4021 and a second frame body 4022, the first frame body 4021 is slidably connected with the first movable groove 2, the second movable frame 403 is slidably connected with the second movable groove 3, and the swinging mechanism 4 is provided with a plurality of swinging mechanisms.
And all that is not described in detail in this specification is well known to those skilled in the art.
The working principle of the application is as follows: when adding the medicine reagent, the test tube is placed on the first clamping arm 4083 or the second clamping arm 4085, when being placed on the first clamping arm 4083, the rotating block 6 on the first movable frame 402 needs to be rotated, then the first screw rod 4084 is driven to rotate, the first clamping arm 4083 is limited by the first groove 4081, so that the two first clamping arms 4083 are driven to move relatively, so that the test tube is clamped, when being placed on the second clamping arm 4085, the rotating block 6 on the second movable frame 403 needs to be rotated, then the second screw rod 4086 is driven to rotate, the second clamping arm 4085 is limited by the second groove 4082, so that the two second clamping arms 4085 are driven to move relatively, so that the test tube is clamped, then the plastic toy fragments are respectively placed in the test tubes, the corresponding medicine reagent is added into the test tubes, then the sealing plug is used for sealing the test tube port, then the motor 51 is started, and the second gear 53 is driven to rotate by the rotating shaft 52, so as to drive the first gear 406 to rotate, and further drive the swing arm 407 to move, so as to drive the cross bar 4102 to reciprocate up and down, and simultaneously, under the combined action of the first support bar 4091, the first diagonal bar 4093, the shaft rod 405, the second support bar 4092 and the second diagonal bar 4094, the first movable frame 402 and the second movable frame 403 are driven to reciprocate up and down, when the cross bar 4102 moves to the highest point, the first movable frame 402 and the second movable frame 403 incline to one side, when the cross bar 4102 moves to the lowest point, the first movable frame 402 and the second movable frame 403 are in a horizontal state, so that the first movable frame 402 is utilized to drive the first clamping arm 4083 to move, the second movable frame 403 is utilized to drive the second clamping arm 4085 to move, and further drive the test tubes to perform full shaking oscillation, so that plastic toy fragments and medicine reagents perform full reaction, therefore, through utilizing fixture 408 to carry out the centre gripping to the test tube, utilize first gear 406 to drive swing arm 407 motion to drive first movable frame 402 and second movable frame 403 and carry out reciprocating motion, thereby drive a plurality of test tubes and carry out synchronous reciprocal rocking, it is efficient to shake, improves mixed effect, convenient to use improves work efficiency.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A method for detecting phthalate plasticizers in plastic toys by using a fluorescence method is characterized in that: the method comprises the following steps:
s1, firstly, placing a plurality of test tubes on a clamping mechanism (408) on oscillation equipment, taking tetrahydrofuran solution with gradient phthalate content as a standard solution, crushing plastic toys, picking up fragments of the plastic toys, placing the fragments in the test tubes, adding tetrahydrofuran into each test tube, adding dioxane and strong alkali solution into the standard solution and the test tubes respectively, plugging a test tube opening by using a sealing plug, starting a motor (51) to drive a swinging mechanism (4) to move, and fully shaking each test tube, so that phthalate is obtained through hydrolysis;
s2, sequentially adding a hydrochloric acid solution, a PBS solution, a cupric nitrate solution, a hydrogen peroxide solution, manganese dioxide and a strong alkali solution into the standard solution and the test tubes, plugging the opening of the test tubes by using a sealing plug, and starting a motor (51) again to drive the swinging mechanism (4) to move so as to fully shake each test tube;
s3, finally, carrying out fluorescence intensity measurement on the solution in the test tube by using a fluorescence method, and comparing the measurement result corresponding to the solution in the test tube with the measurement result corresponding to the standard solution to obtain the phthalate content;
the oscillating device comprises a box body (1), wherein a first movable groove (2) is formed in one side of the box body (1) in a penetrating mode, a second movable groove (3) is formed in the other side of the box body (1) in a penetrating mode, and a swinging mechanism (4) and a driving mechanism (5) are respectively arranged in the box body (1);
the swing mechanism (4) comprises a supporting plate (401), a first movable frame (402) and a second movable frame (403), wherein the supporting plate (401) is fixedly connected in the box body (1), a sliding groove (404) is formed in the front of the supporting plate (401) in a penetrating mode, a shaft lever (405) is fixedly connected to the supporting plate (401), a first gear (406) is rotatably connected to the shaft lever (405), a swing arm (407) is rotatably connected to the first gear (406), the swing arm (407) is movably connected with the first movable frame (402) and the second movable frame (403) through a transmission mechanism (410), clamping mechanisms (408) are arranged on the outer sides of the first movable frame (402) and the second movable frame (403), the first movable frame (402) and the second movable frame (403) are movably connected with the shaft lever (405) through a supporting mechanism (409), and the first gear (406) is in transmission connection with a driving mechanism (5);
the transmission mechanism (410) comprises a cylinder (4101), the outer surface of the cylinder (4101) is matched with the inside of the chute (404), a cross rod (4102) is fixedly connected to the cylinder (4101), and the cross rod (4102) is rotationally connected with the swing arm (407), the first movable frame (402) and the second movable frame (403);
supporting mechanism (409) are including first bracing piece (4091) and second bracing piece (4092), first bracing piece (4091) fixed connection is on first movable frame (402), rotate on first bracing piece (4091) and be connected with first diagonal (4093), rotate between first diagonal (4093) and axostylus axostyle (405) and be connected, second bracing piece (4092) fixed connection is on second movable frame (403), rotate on second bracing piece (4092) and be connected with second diagonal (4094), rotate between second diagonal (4094) and axostylus axostyle (405) and be connected.
2. The method for detecting phthalate plasticizers in plastic toys by using a fluorescence method according to claim 1, wherein the method comprises the following steps: the driving mechanism (5) comprises a motor (51), the motor (51) is fixedly connected to the front face of the box body (1), the output end of the motor (51) is fixedly connected with a rotating shaft (52), one end of the rotating shaft (52) penetrates through the box body (1) and is rotationally connected with the inside of the box body (1), a second gear (53) is fixedly connected to the outer surface of the rotating shaft (52), and the second gear (53) is meshed with the first gear (406).
3. The method for detecting phthalate plasticizers in plastic toys by using a fluorescence method according to claim 1, wherein the method comprises the following steps: the clamping mechanism (408) comprises a first groove (4081) and a second groove (4082), the first groove (4081) is formed in one side of the first movable frame (402), the first groove (4081) is provided with a first clamping arm (4083) in a sliding mode, the first clamping arm (4083) is provided with two clamping arms, the first groove (4081) is rotationally connected with a first screw (4084), one end of the first screw (4084) penetrates through the first groove (4081) and extends to the outside of the first movable frame (402), the first screw (4084) is connected with the first clamping arm (4083) in a threaded mode, the second groove (4082) is formed in one side of the second movable frame (403), the second clamping arm (4085) is connected with two clamping arms in a sliding mode, the second groove (4082) is rotationally connected with a second screw (4086), and the second screw (4086) penetrates through the second screw (4082) and extends to the outside of the second movable frame (4085).
4. A method for detecting phthalate plasticizers in plastic toys by fluorescence according to claim 3, characterized in that: the first screw rod (4084) and the second screw rod (4086) are two-way screw rods, and one ends of the first screw rod (4084) and the second screw rod (4086) are fixedly connected with a rotating block (6).
5. The method for detecting phthalate plasticizers in plastic toys by using a fluorescence method according to claim 1, wherein the method comprises the following steps: the first movable frame (402) comprises a first frame body (4021) and a second frame body (4022), the first frame body (4021) is slidably connected with the first movable groove (2), the second movable frame (403) is slidably connected with the second movable groove (3), and the swinging mechanism (4) is provided with a plurality of swinging mechanisms.
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