CN115166109A - Method for detecting 2-ethylhexyl diphenyl phosphate in leather - Google Patents
Method for detecting 2-ethylhexyl diphenyl phosphate in leather Download PDFInfo
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- CN115166109A CN115166109A CN202210673521.8A CN202210673521A CN115166109A CN 115166109 A CN115166109 A CN 115166109A CN 202210673521 A CN202210673521 A CN 202210673521A CN 115166109 A CN115166109 A CN 115166109A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
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- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- 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
- G01N1/40—Concentrating samples
- G01N1/4055—Concentrating samples by solubility techniques
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- 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
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
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- 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
- G01N1/44—Sample treatment involving radiation, e.g. heat
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- 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
- G01N1/40—Concentrating samples
- G01N1/4055—Concentrating samples by solubility techniques
- G01N2001/4061—Solvent extraction
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- 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
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
- G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N2030/062—Preparation extracting sample from raw material
Abstract
The invention discloses a method for detecting 2-ethylhexyl diphenyl phosphate in leather. The invention has the beneficial effects that: through setting up crushing roller, can smash the leather, thereby can make 2-ethylhexyl diphenyl phosphate in the leather can be more dissolve in organic solvent, be provided with the baffle of slope installation on smashing the mixing box both sides inner wall through the upside at two crushing rollers, can be when the unloading, play certain effect of blockking to the mixture, make the mixture can fall into collecting vat one, and through setting up conveying mechanism at the uniform velocity, can transport the leather at the uniform velocity to smashing the mixing box in, through setting up concentrated rose box, can concentrate mixed liquid, then collect the mixed liquid after the concentration in collecting vat two through filtering, then utilize it to detect with gas chromatograph again, improve and detect the accuracy.
Description
Technical Field
The invention relates to a detection method, in particular to a detection method of 2-ethylhexyl diphenyl phosphate in leather, and belongs to the technical field of leather detection.
Background
With the ever-expanding application field of leather and the increasing demand of leather, the fire caused by leather is increasing. It is counted that the fire caused by leather accounts for more than half of the total number of fires, particularly, the fire caused by the fire spread of leather is larger in the building and house, and bedding and leather for indoor decoration are the main causes of fire. Therefore, developed countries put forward flame retardant requirements on leather as early as 60-70 years in the 20 th century, and set flame retardant standards and regulations of various kinds of leather, 2-ethylhexyl diphenyl phosphate is used as a main substitute of brominated flame retardant and widely used in leather, and 2-ethylhexyl diphenyl phosphate is mainly added into leather in a simple physical mode, so that the 2-ethylhexyl diphenyl phosphate contained in the leather needs to be detected to prevent the content of the 2-ethylhexyl diphenyl phosphate from exceeding the standard and causing harm to human bodies.
When the existing devices for detecting 2-ethylhexyl diphenyl phosphate are used, the following defects are often present:
1) When the existing devices for detecting 2-ethylhexyl diphenyl phosphate are used, because the detection devices do not have a crushing function, workers are required to manually crush the 2-ethylhexyl diphenyl phosphate, the efficiency of manual crushing is low, the crushed blocks are large and are not beneficial to detection, and the existing devices cannot control the material conveying speed during material conveying, so that the feeding port is easily blocked, and the testing efficiency is influenced;
2) When some existing devices for detecting 2-ethylhexyl diphenyl phosphate are used, mostly mixed liquid is kept still, and then supernatant is directly detected through a gas chromatograph, so that the detection accuracy is affected due to the fact that the concentration is low, and the test is often inaccurate.
Disclosure of Invention
The present invention is directed to a method for detecting 2-ethylhexyl diphenyl phosphate in leather to solve at least one of the above problems.
The invention realizes the purpose through the following technical scheme: a method for detecting 2-ethylhexyl diphenyl phosphate in leather comprises
Firstly, the device is moved to a proper position through a universal wheel and is fixed,
the universal wheels are fixedly arranged at four corners of the lower surface of the base, the base is arranged on the lower side of the detection device, and a push handle is fixedly arranged on one side wall of the base;
secondly, conveying the leather into a crushing and mixing box through a uniform-speed conveying mechanism for crushing, enabling the crushed leather to fall into a first collecting groove, injecting clear water into the first collecting groove, soaking the leather in the clear water, standing for a period of time,
the crushing and mixing box is fixedly arranged on one side of the upper surface of the base, a first collecting tank is arranged on the inner bottom wall of the crushing and mixing box, a filling port is formed in the side wall of one side of the crushing and mixing box, a box door is rotatably arranged on the surface of a box body of the crushing and mixing box, and the uniform-speed conveying mechanism is fixedly arranged on the upper side wall of the crushing and mixing box;
step three, guiding the supernatant in the collecting tank I into a concentration filter tank through a water pump for concentration and filtration,
the water pump is fixedly installed on the upper side wall of the concentration filter box, the water inlet end of the water pump is connected with a water inlet pipe, the end part of the water inlet pipe is connected with a first installation plate, one side, away from the concentration filter box, of the water inlet pipe is provided with a conveying pipe clamped on the side wall of the crushing mixing box, one end of the conveying pipe extends into the crushing mixing box, the end part of the conveying pipe is provided with a filter cover, the other end of the conveying pipe is connected with a second installation plate, the water outlet end of the water pump is provided with a water outlet pipe, and the lower end of the water outlet pipe extends into the concentration filter box;
step four, opening the turnover door, taking out the collecting tank II, transferring the mixed liquid in the collecting tank II into a test tube, detecting the 2-ethylhexyl diphenyl phosphate in the mixed liquid by a gas chromatograph,
the turnover door is rotatably installed on the surface of the lower side box body of the concentrated filter box through a rotating shaft, and the collecting tank II is installed on the inner bottom wall of the concentrated filter box.
As a still further scheme of the invention: the crushing mixing box is internally and rotatably connected with two crushing rollers through a wheel shaft, the rear side of each crushing roller is connected with the output end of a first motor, and the first motor is fixedly installed on the side wall of the rear side of the crushing mixing box.
As a still further scheme of the invention: the upside that smashes the inside of mixing box and be located two crushing rollers is provided with the baffle of slope installation on smashing the mixing box both sides inner wall.
As a still further scheme of the invention: at the uniform velocity conveying mechanism includes the rigid coupling and is in smash two constitutions of motor on the fixing base on the lateral wall of mixing box upside and installing on the lateral wall of fixing base one end, the inside of fixing base is provided with the mounting groove, and the mounting groove internal rotation is connected with helical blade, helical blade's one end is connected with the output of motor two, the upside of fixing base is provided with the feed inlet, and its downside is provided with the discharge gate, the lower extreme of discharge gate is linked together with smashing the mixing box.
As a still further scheme of the invention: the internally mounted of concentrated rose box has the backup pad, and the upside of backup pad installs the concentrator box, the heater is installed to the inner diapire both sides of concentrator box, and is provided with temperature sensor on one side lateral wall of concentrator box, the downside lateral wall central point of concentrator box puts fixed mounting has the solenoid valve, and the lower extreme of solenoid valve extends to the downside of backup pad.
As a still further scheme of the invention: a first filter screen and a second filter screen are respectively installed on the lower side of the concentration box, and the filter hole of the first filter screen is larger than that of the second filter screen.
As a still further scheme of the invention: a controller is arranged between the crushing mixing box and the concentration filter box, the input end of the controller is connected with the output end of the temperature sensor, and the output end of the controller is connected with the input ends of the electromagnetic valve and the heater respectively.
The invention has the beneficial effects that:
1) According to the invention, the leather can be crushed by arranging the crushing rollers, so that 2-ethylhexyl diphenyl phosphate in the leather can be more dissolved in an organic solvent, the baffles which are obliquely arranged on the inner walls of the two sides of the crushing mixing box are arranged on the upper sides of the two crushing rollers, so that a certain blocking effect can be exerted on a mixture during blanking, the mixture can fall into the first collecting tank, and the leather can be transported into the crushing mixing box at a constant speed by arranging the constant-speed conveying mechanism, so that the leather is prevented from being blocked in a discharge port during transportation, and the conveying efficiency is improved;
2) According to the invention, the concentration filter box is arranged, the temperature control range of the temperature sensor is set during concentration, then the heater is started to heat the mixed liquid, when the temperature sensor senses that the temperature exceeds the standard, a signal is sent to the controller, the controller further controls the heater to stop running, and controls the electromagnetic valve to be opened, so that the concentrated mixed liquid is collected into the second collecting tank after being filtered, and then the concentrated mixed liquid is detected by the gas chromatograph, and the detection accuracy is improved.
Drawings
FIG. 1 is a schematic view of the structure of a device for detecting 2-ethylhexyl diphenyl phosphate in leather according to the present invention;
FIG. 2 is a schematic cross-sectional structure view of a device for detecting 2-ethylhexyl diphenyl phosphate in leather according to the present invention;
FIG. 3 is a schematic view of a rear view structure of a device for detecting 2-ethylhexyl diphenyl phosphate in leather according to the present invention.
In the figure: 1. the device comprises a base, 2, universal wheels, 3, a pushing handle, 4, a crushing mixing box, 5, a box door, 6, a uniform-speed conveying mechanism, 601, a fixed seat, 602, a spiral blade, 603, a second motor, 604, a feeding hole, 605, a discharging hole, 7, a concentration filtering box, 8, a turnover door, 9, a controller, 10, a water pump, 11, a water outlet pipe, 12, a water inlet pipe, 13, a first mounting plate, 14, a second mounting plate, 15, a conveying pipe, 16, a baffle, 17, a wheel shaft, 18, a crushing roller, 19, a first collecting tank, 20, a supporting plate, 21, a concentration box, 22, a temperature sensor, 23, a heater, 24, an electromagnetic valve, 25, a first filter screen, 26, a second filter screen, 27, a second collecting tank, 28 and a first motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in figures 1 to 3, a method for detecting 2-ethylhexyl diphenyl phosphate in leather comprises
Firstly, the device is moved to a proper position through the universal wheel 2 and is fixed,
the universal wheels 2 are fixedly arranged at four corners of the lower surface of the base 1, the base 1 is arranged at the lower side of the detection device, and a push handle 3 is fixedly arranged on one side wall of the base 1;
secondly, conveying the leather into a crushing and mixing box 4 through a uniform-speed conveying mechanism 6 for crushing, enabling the crushed leather to fall into a first collecting groove 19, injecting clear water into the first collecting groove 19, soaking the leather in the clear water, standing for a period of time,
the crushing and mixing box 4 is fixedly arranged on one side of the upper surface of the base 1, a first collecting groove 19 is arranged on the inner bottom wall of the crushing and mixing box 4, a filling port is formed in the side wall of one side of the crushing and mixing box 4, a box door 5 is rotatably arranged on the surface of a box body of the crushing and mixing box, and the uniform speed conveying mechanism 6 is fixedly arranged on the upper side wall of the crushing and mixing box 4;
thirdly, guiding the supernatant in the first collecting tank 19 into a concentration filtering tank 7 through a water pump 10 for concentration and filtration,
the water pump 10 is fixedly installed on the upper side wall of the concentration filter tank 7, a water inlet end of the water pump is connected with a water inlet pipe 12, the end part of the water inlet pipe 12 is connected with a first installation plate 13, one side, far away from the concentration filter tank 7, of the water inlet pipe 12 is provided with a conveying pipe 15 clamped on the side wall of the crushing mixing tank 4, one end of the conveying pipe 15 extends into the crushing mixing tank 4, a filter cover is installed at the end part of the conveying pipe, the other end of the conveying pipe is connected with a second installation plate 14, a water outlet pipe 11 is installed at the water outlet end of the water pump 10, and the lower end of the water outlet pipe 11 extends into the concentration filter tank 7;
step four, opening the turnover door 8, taking out the collecting tank II 27, transferring the mixed solution in the collecting tank II to a test tube, detecting the 2-ethylhexyl diphenyl phosphate in the mixed solution by a gas chromatograph,
the turnover door 8 is rotatably installed on the lower side box body surface of the concentration filter box 7 through a rotating shaft, and the collecting tank II 27 is installed on the inner bottom wall of the concentration filter box 7.
In the embodiment of the invention, two crushing rollers 18 are rotatably connected in the crushing and mixing box 4 through a wheel shaft 17, the rear side of each crushing roller 18 is connected with the output end of a motor I28, and the motor I28 is fixedly arranged on the rear side wall of the crushing and mixing box 4 and can crush leather, so that 2-ethylhexyl diphenyl phosphate in the leather can be more dissolved in an organic solvent.
In the embodiment of the invention, baffles 16 obliquely arranged on the inner walls of the two sides of the crushing and mixing box 4 are arranged inside the crushing and mixing box 4 and positioned on the upper sides of the two crushing rollers 18, so that the mixture can be blocked to a certain extent during blanking, and the mixture can fall into a first collecting tank 19.
In the embodiment of the invention, the uniform-speed conveying mechanism 6 comprises a fixed seat 601 fixedly connected to the side wall of the upper side of the crushing and mixing box 4 and a second motor 603 mounted on the side wall of one end of the fixed seat 601, a mounting groove is formed inside the fixed seat 601, a spiral blade 602 is rotatably connected in the mounting groove, one end of the spiral blade 602 is connected with the output end of the second motor 603, a feed inlet 604 is formed in the upper side of the fixed seat 601, a discharge outlet 605 is formed in the lower side of the fixed seat 601, the lower end of the discharge outlet 605 is communicated with the crushing and mixing box 4, leather can be conveyed into the crushing and mixing box 4 at a uniform speed, and the leather is prevented from being blocked in the discharge outlet 605 during conveying.
Example two
As shown in figures 1 to 3, a method for detecting 2-ethylhexyl diphenyl phosphate in leather comprises
Firstly, the device is moved to a proper position through a universal wheel 2 and is fixed,
the universal wheels 2 are fixedly arranged at four corners of the lower surface of the base 1, the base 1 is arranged at the lower side of the detection device, and a push handle 3 is fixedly arranged on one side wall of the base 1;
secondly, conveying the leather into a crushing and mixing box 4 through a uniform-speed conveying mechanism 6 for crushing, enabling the crushed leather to fall into a first collecting groove 19, injecting clear water into the first collecting groove 19, soaking the leather in the clear water, standing for a period of time,
the crushing and mixing box 4 is fixedly arranged on one side of the upper surface of the base 1, a first collecting groove 19 is arranged on the inner bottom wall of the crushing and mixing box 4, a filling port is formed in the side wall of one side of the crushing and mixing box 4, a box door 5 is rotatably arranged on the surface of a box body of the crushing and mixing box, and the uniform speed conveying mechanism 6 is fixedly arranged on the upper side wall of the crushing and mixing box 4;
thirdly, guiding the supernatant in the first collecting tank 19 into a concentration filtering box 7 through a water pump 10 for concentration and filtration,
the water pump 10 is fixedly installed on the upper side wall of the concentration filter tank 7, a water inlet end of the water pump is connected with a water inlet pipe 12, the end part of the water inlet pipe 12 is connected with a first installation plate 13, one side, far away from the concentration filter tank 7, of the water inlet pipe 12 is provided with a conveying pipe 15 clamped on the side wall of the crushing mixing tank 4, one end of the conveying pipe 15 extends into the crushing mixing tank 4, a filter cover is installed at the end part of the conveying pipe, the other end of the conveying pipe is connected with a second installation plate 14, a water outlet pipe 11 is installed at the water outlet end of the water pump 10, and the lower end of the water outlet pipe 11 extends into the concentration filter tank 7;
step four, opening the turnover door 8, taking out the collecting tank II 27, transferring the mixed liquid in the collecting tank II to a test tube, detecting the 2-ethylhexyl diphenyl phosphate in the mixed liquid by a gas chromatograph,
the turnover door 8 is rotatably installed on the lower side box body surface of the concentration filter box 7 through a rotating shaft, and the collecting tank II 27 is installed on the inner bottom wall of the concentration filter box 7.
In the embodiment of the present invention, the supporting plate 20 is installed inside the concentrating and filtering tank 7, the concentrating tank 21 is installed on the upper side of the supporting plate 20, the heaters 23 are installed on both sides of the inner bottom wall of the concentrating tank 21, the temperature sensor 22 is installed on one side wall of the concentrating tank 21, the electromagnetic valve 24 is fixedly installed at the center position of the lower side wall of the concentrating tank 21, and the lower end of the electromagnetic valve 24 extends to the lower side of the supporting plate 20, so that the mixed liquid can be concentrated, and the concentration of 2-ethylhexyl diphenyl phosphate therein can be increased.
In the embodiment of the invention, the lower side of the concentration box 21 is respectively provided with the first filter screen 25 and the second filter screen 26, and the filter holes of the first filter screen 25 are larger than the filter holes of the second filter screen 26, so that the concentrated mixed liquid can be filtered again, and the influence of impurities on the subsequent detection result is avoided.
In the embodiment of the invention, a controller 9 is arranged between the crushing mixing box 4 and the concentrating and filtering box 7, the input end of the controller 9 is connected with the output end of a temperature sensor 22, the output end of the controller 9 is respectively connected with the input ends of an electromagnetic valve 24 and a heater 23, when the concentrating is carried out, the temperature control range of the temperature sensor 22 is set, then the heater 23 is started to heat the mixed liquid, when the temperature sensor 22 senses that the temperature exceeds the standard, a signal is sent to the controller 9, the controller 9 further controls the heater 23 to stop running, and the electromagnetic valve 24 is controlled to be opened, so that the concentrated mixed liquid is collected into a second collecting tank 27 through filtering, and then the concentrated mixed liquid is detected by a gas chromatograph.
The working principle is as follows: when the method for detecting the 2-ethylhexyl diphenyl phosphate in the leather is used, firstly, the leather is conveyed into a crushing mixing box 4 through a uniform speed conveying mechanism 6, the leather is crushed through two arranged crushing rollers 18, the crushed leather falls into a first collecting groove 19, clear water is injected into the first collecting groove 19, the leather is soaked in the clear water and stands for a period of time, then a water pump 10 is started, supernatant in the first collecting groove 19 is guided into a concentration filtering box 7 for concentration and filtration, during concentration, the temperature control range of a temperature sensor 22 is set, then a heater 23 is started to heat mixed liquid, when the temperature sensor 22 senses that the temperature exceeds the standard, a signal is sent to a controller 9, the controller 9 further controls the heater 23 to stop running, and a solenoid valve 24 is controlled to be opened, so that the concentrated mixed liquid is collected into a second collecting groove 27 through filtration, and then the mixed liquid is detected by a gas chromatograph, and the detection accuracy of the mixed liquid is improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (7)
1. The method for detecting 2-ethylhexyl diphenyl phosphate in leather is characterized by comprising the following steps:
firstly, the device is moved to a proper position through a universal wheel (2) and is fixed,
the universal wheels (2) are fixedly arranged at four corners of the lower surface of the base (1), the base (1) is arranged on the lower side of the detection device, and a push handle (3) is fixedly arranged on one side wall of the base;
secondly, conveying the leather into a crushing and mixing box (4) through a uniform-speed conveying mechanism (6) for crushing, enabling the crushed leather to fall into a collecting groove I (19), injecting clear water into the collecting groove I (19), soaking the leather in the clear water, standing for a period of time,
the crushing and mixing box (4) is fixedly arranged on one side of the upper surface of the base (1), a first collecting groove (19) is arranged on the inner bottom wall of the crushing and mixing box, a filling port is formed in the side wall of one side of the crushing and mixing box (4), a box door (5) is rotatably arranged on the surface of the box body of the crushing and mixing box, and the uniform speed conveying mechanism (6) is fixedly arranged on the upper side wall of the crushing and mixing box (4);
thirdly, guiding the supernatant in the first collecting tank (19) into a concentration filtering box (7) through a water pump (10) for concentration and filtration,
the water pump (10) is fixedly installed on the upper side wall of the concentration filter box (7), the water inlet end of the water pump is connected with a water inlet pipe (12), the end portion of the water inlet pipe (12) is connected with a first mounting plate (13), one side, far away from the concentration filter box (7), of the water inlet pipe (12) is provided with a conveying pipe (15) clamped on the side wall of the crushing mixing box (4), one end of the conveying pipe (15) extends into the crushing mixing box (4), the end portion of the conveying pipe is provided with a filter cover, the other end of the conveying pipe is connected with a second mounting plate (14), the water outlet end of the water pump (10) is provided with a water outlet pipe (11), and the lower end of the water outlet pipe (11) extends into the concentration filter box (7);
step four, opening the turnover door (8), taking out the collecting tank II (27), transferring the mixed liquid in the collecting tank II to a test tube, detecting the 2-ethylhexyl diphenyl phosphate in the mixed liquid by a gas chromatograph,
the turnover door (8) is rotatably installed on the surface of the lower side box body of the concentration filter box (7) through a rotating shaft, and the collecting groove II (27) is installed on the inner bottom wall of the concentration filter box (7).
2. The method for detecting 2-ethylhexyl diphenyl phosphate in leather as claimed in claim 1, wherein: two crushing rollers (18) are rotatably connected inside the crushing mixing box (4) through a wheel shaft (17), the rear side of each crushing roller (18) is connected with the output end of a first motor (28), and the first motor (28) is fixedly installed on the side wall of the rear side of the crushing mixing box (4).
3. The method for detecting 2-ethylhexyl diphenyl phosphate in leather as claimed in claim 2, wherein: baffles (16) which are obliquely arranged on the inner walls at the two sides of the crushing and mixing box (4) are arranged on the upper sides of the two crushing rollers (18) in the crushing and mixing box (4).
4. The method for detecting 2-ethylhexyl diphenyl phosphate in leather as claimed in claim 1, wherein: the uniform-speed conveying mechanism (6) comprises a fixed seat (601) fixedly connected to the side wall of the upper side of the crushing mixing box (4) and a motor II (603) mounted on the side wall of one end of the fixed seat (601), a mounting groove is formed in the fixed seat (601), a spiral blade (602) is rotatably connected to the mounting groove, one end of the spiral blade (602) is connected with the output end of the motor II (603), a feeding hole (604) is formed in the upper side of the fixed seat (601), a discharging hole (605) is formed in the lower side of the fixed seat, and the lower end of the discharging hole (605) is communicated with the crushing mixing box (4).
5. The method for detecting 2-ethylhexyl diphenyl phosphate in leather as claimed in claim 1, wherein: the utility model discloses a concentrated rose box, including concentrated rose box (7), the internally mounted of concentrated rose box (7) has backup pad (20), and the upside of backup pad (20) installs concentrate box (21), heater (23) are installed to the inner diapire both sides of concentrate box (21), and are provided with temperature sensor (22) on one side wall of concentrate box (21), the downside lateral wall central point of concentrate box (21) puts fixed mounting has solenoid valve (24), and the lower extreme of solenoid valve (24) extends to the downside of backup pad (20).
6. The method for detecting 2-ethylhexyl diphenyl phosphate in leather as claimed in claim 5, wherein: a first filter screen (25) and a second filter screen (26) are respectively installed on the lower side of the concentration box (21), and the filter hole of the first filter screen (25) is larger than that of the second filter screen (26).
7. The method for detecting 2-ethylhexyl diphenyl phosphate in leather as claimed in claim 1, wherein: a controller (9) is arranged between the crushing and mixing box (4) and the concentration and filtration box (7), the input end of the controller (9) is connected with the output end of the temperature sensor (22), and the output end of the controller (9) is connected with the input ends of the electromagnetic valve (24) and the heater (23) respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210673521.8A CN115166109B (en) | 2022-06-13 | 2022-06-13 | Method for detecting 2-ethylhexyl diphenyl phosphate in leather |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210673521.8A CN115166109B (en) | 2022-06-13 | 2022-06-13 | Method for detecting 2-ethylhexyl diphenyl phosphate in leather |
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| CN115166109A true CN115166109A (en) | 2022-10-11 |
| CN115166109B CN115166109B (en) | 2023-09-15 |
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| CN202210673521.8A Active CN115166109B (en) | 2022-06-13 | 2022-06-13 | Method for detecting 2-ethylhexyl diphenyl phosphate in leather |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999000655A2 (en) * | 1997-06-27 | 1999-01-07 | Immunetics, Inc. | Rapid flow-through binding assay apparatus and method |
| CN213813095U (en) * | 2020-11-11 | 2021-07-27 | 广东实朴检测服务有限公司 | Be arranged in soil deposit phenolic compound content detection device |
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2022
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| WO1999000655A2 (en) * | 1997-06-27 | 1999-01-07 | Immunetics, Inc. | Rapid flow-through binding assay apparatus and method |
| CN213813095U (en) * | 2020-11-11 | 2021-07-27 | 广东实朴检测服务有限公司 | Be arranged in soil deposit phenolic compound content detection device |
Non-Patent Citations (1)
| Title |
|---|
| 林睿;赖莺;葛秀秀;黄宗平;林海霞;林伟靖;黄龙;: "气相色谱质谱法测定仿真饰品中磷酸酯类增塑剂含量", 广州化学, no. 02 * |
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