CN209789830U - simple and convenient skin surface layer chemical pollutant sampling device - Google Patents
simple and convenient skin surface layer chemical pollutant sampling device Download PDFInfo
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- CN209789830U CN209789830U CN201920135987.6U CN201920135987U CN209789830U CN 209789830 U CN209789830 U CN 209789830U CN 201920135987 U CN201920135987 U CN 201920135987U CN 209789830 U CN209789830 U CN 209789830U
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Abstract
The utility model relates to a simple and convenient sampling device for chemical pollutants on the surface layer of skin, which comprises a sampling device main body, wherein the sampling device main body is internally divided into an independent acquisition chamber, a collection chamber and a solvent chamber by a partition plate; the sampling chamber is provided with a liquid inlet pipe and a liquid outlet pipe, the bottom of the sampling device main body is provided with a sampling port abutted against skin, an outer port of the liquid inlet pipe extends into the solvent of the solvent chamber, inner ports of the liquid inlet pipe and the liquid outlet pipe are respectively abutted against the skin at the position of the sampling port, an outer port of the liquid outlet pipe extends into the collecting chamber, and a washing area is formed between the inner ports of the liquid inlet pipe and the liquid outlet pipe; the collecting chamber is of a structure with an open top, the opening of the collecting chamber is detachably assembled with an air extractor in an inosculating way, and the air extractor is used for enabling the collecting chamber to form negative pressure. The sampling device is simple in structure, can effectively improve the removal efficiency of skin pollutants, can more accurately evaluate the pollution condition of skin chemicals, and provides evidence for taking effective measures to prevent skin absorption.
Description
Technical Field
The utility model relates to a pollutant sampling device field especially indicates a simple and easy convenient skin top layer chemical pollutant sampling device.
Background
Various chemicals existing in workplaces mainly enter human bodies through respiratory tracts, skins and digestive tracts, and have health influence on human bodies. At present, the air contact limit values of chemical substances in workplaces established in China are all measured by air sampling, and the approach of skin contact is not considered. Occupational health standards GBZ 2.1.1-2007 workplace hazard occupational exposure limits part 1: the chemical harmful factors mentioned in the above mentioned 339 chemical harmful substances, wherein the label "skin" indicates that 114 chemicals (33.6%) causing systemic effect can be absorbed through the whole skin, and there are studies that the skin surface wiping sampling can be used for evaluating the skin surface pollution or the skin exposure condition of a workplace, but the method has many defects, such as low removal efficiency and elution efficiency of the skin surface chemical pollutants, and the used wiping material can not well penetrate and completely dissolve and absorb the pollutants on the skin, so that the removal efficiency is low, even if the wiping material removes the pollutants from the skin surface by 100%, the wiping material can retain the pollutants and can not completely elute the pollutants for determination, thereby finally influencing the accuracy of the exposure evaluation result of the skin absorption.
Disclosure of Invention
The utility model provides a simple and easy convenient skin top layer chemical contamination sampling device solves the defect that the sampling method exists is cleaned to the actual surface, can more accurate aassessment chemicals from the absorptive exposure of skin.
The utility model adopts the following technical scheme:
The simple and convenient sampling device for the chemical pollutants on the skin surface layer comprises a sampling device main body, wherein the sampling device main body is internally divided into an independent collecting chamber, a collecting chamber and a solvent chamber by a partition plate; the collection chamber is provided with a liquid inlet pipe and a liquid outlet pipe, the bottom of the sampling device main body is provided with a collection port abutted against skin, an outer port of the liquid inlet pipe extends into a solvent of the solvent chamber, an inner port of the liquid inlet pipe is abutted against the skin at the collection port, an outer port of the liquid outlet pipe extends into the collection chamber, an inner port of the liquid outlet pipe is abutted against the skin at the collection port, and a washing area is formed between the inner port of the liquid inlet pipe and the inner port of the liquid outlet pipe; the collecting chamber is of a structure with an open top, the opening of the collecting chamber is detachably assembled with an air extractor in an inosculating way, and the air extractor is used for enabling the collecting chamber to form negative pressure.
In a further improvement, the collecting opening is circular, and the diameter of the collecting opening is 1-5 cm; the distance between the inner port of the liquid inlet pipe and the inner port of the liquid outlet pipe is 0.6-0.9 times of the diameter of the collecting port.
In a further improvement, the inner port of the liquid inlet pipe and the inner port of the liquid outlet pipe are positioned on the same horizontal plane. Or the distance between the inner port of the liquid inlet pipe and the skin is 0-3 mm; the distance between the inner port of the liquid inlet pipe and the skin is 0.3-1.5 mm. And the pipe diameter of the liquid inlet pipe is 1.3-1.8 times of that of the liquid outlet pipe.
In a further improvement, the sampling solvent disposed in the solvent chamber is n-hexane, dichloroethane, deionized water, ethanol, isopropanol, acetone or phosphate buffer.
In a further improvement, a sealing ring is fixedly sleeved on the periphery of the collecting port; and the sealing ring is preferably in a sucker structure with a through hole in the center.
In a further improvement, the volume flow of the air pumping device is 50-100 ml/min.
The utility model discloses an adopt preparation instrument of device: manufacturing a collection chamber with a liquid inlet pipe and a liquid outlet pipe and a hollow bottom end, wherein a rubber sucker is attached to the periphery of the lower end of the collection chamber, the liquid inlet pipe is connected with a solvent chamber, a certain volume of solvent is added into the solvent chamber to dissolve pollutants on the skin, corresponding solvents can be selected according to the dissolution degree of different chemicals, and usually deionized water, ethanol, isopropanol, acetone, phosphate buffer solution and the like are used as sampling solvents; the liquid outlet pipe is connected with another collection chamber, and the collection chamber is connected with an aerodynamic sampling pump device, so that the negative pressure state of the whole sampling system device is kept.
The method comprises the following steps: the lower end of the collection chamber is placed on a relatively flat skin surface to be sampled, usually on the back of a hand or an arm, or an exposed skin surface, an air power device is started (at a flow rate of 50 ml/min), a sucker at the lower edge of the collection chamber is ensured to suck the skin, a certain volume of solvent (usually 50-100 ml) is injected into the solvent chamber, the solvent is flushed from the skin surface, and the liquid inlet and outlet pipes are positioned on the same horizontal plane to form a vortex flow, so that the skin surface can be fully washed, pollutants on the skin surface are ensured to be dissolved as much as possible, the pollutants are sucked out by the liquid outlet pipes and enter the collecting pipe, and the skin surface is washed in such a way until the solvent is used up. The lotion in the collecting tube can be sent to a laboratory for measurement, and the quantity or the concentration of the pollutants on the surface of the skin can be more accurately measured as a result.
And (3) experimental verification:
Taking Dimethylformamide (DMF) as an example: dimethylformamide is an important chemical raw material and an organic solvent, is widely applied to the industries of polyurethane, acrylon, medicine, pesticide, dye, electronics and the like, and is particularly applied to the industries of synthetic leather production, acrylon production and the like recently. At the production and use sites of DMF, it can be absorbed by the human body through the respiratory tract and skin, especially in the case of bare skin of workers working in summer, the exposure absorbed through the skin is not negligible. DMF contact not only causes irritation symptoms of skin mucosa, but also mainly causes acute and chronic toxic liver damage. Therefore, the evaluation and intervention of skin exposure is an important link for preventing health damage of workers.
(II), use deionized water as the solvent, use the utility model discloses a skin sample thief of this case to sample the exposed skin of 10 workers of certain synthetic leather factory, use gas chromatography to detect the sample of gathering, detect the pollution amount of unit area skin DMF, the average 2.62 + 0.16ug/cm2 of record result, removal efficiency is 98.5% + 1.9%.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages: the utility model discloses a skin top layer chemical contamination sampling device can effectively improve the removal efficiency of skin contamination thing, can more accurately assess the pollution situation of skin chemistry thing to provide the evidence for taking effective measure to prevent that skin from absorbing.
Drawings
Fig. 1 is a schematic view of a cross-sectional structure of the device according to the present invention.
fig. 2 is a schematic view of the top view structure of the collecting port of the present invention.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
Referring to fig. 1 and 2, a simple and convenient sampling device for chemical pollutants on the surface layer of skin comprises a sampling device body 1, wherein the sampling device body 1 is internally divided into an independent collecting chamber 10, a collecting chamber 20 and a solvent chamber 30 by a partition plate 6 (comprising a transverse partition plate 61 and a longitudinal partition plate 62 in fig. 1). As shown in FIG. 1, the solvent chamber 30 and the collection chamber 20 are partitioned by a horizontal partition 61 and disposed above the collection chamber 10, the solvent chamber 30 and the collection chamber 20 are partitioned by a vertical partition 62 and disposed at left and right sides, a filling opening and a cover 31 adapted to the filling opening are disposed on the top of the solvent chamber 30, and an air inlet 311 is disposed on the cover 31. Gather room 10 and be equipped with feed liquor pipe 11 and drain pipe 12, 1 bottoms of sampling device main part have with the collection mouth 13 of skin 5 butt, gather mouth 13 and sampling room 10 direct intercommunication. Preferably, the acquisition opening 13 is circular, the diameter of the acquisition opening 13 is 1-5 cm, and the diameter of the acquisition opening 13 is 2 cm; a sealing ring 14 is fixedly sleeved on the periphery of the collecting port 13; and the sealing ring 14 is preferably a suction cup structure having a through hole at the center. The distance between the inner port of the liquid inlet pipe 11 and the inner port of the liquid outlet pipe 12 is 0.6-0.9 times of the diameter of the collection port 13. The sampling solvent disposed in the solvent chamber 30 is n-hexane, dichloroethane, deionized water, ethanol, isopropanol, acetone or phosphate buffer. The outer port of the liquid inlet pipe 11 extends into the solvent of the solvent chamber 30, the inner port of the liquid inlet pipe 11 is adjacent to the skin 5 at the collecting port 13, the outer port of the liquid outlet pipe 12 extends into the collecting chamber 20, the inner port of the liquid outlet pipe 12 is adjacent to the skin 5 at the collecting port 13, and a washing area is formed between the inner port of the liquid inlet pipe 11 and the inner port of the liquid outlet pipe 12. The inner port of the liquid inlet pipe 11 and the inner port of the liquid outlet pipe 12 are positioned on the same horizontal plane; because the inner ports of the liquid inlet pipe 11 and the liquid outlet pipe 12 are on the same horizontal plane, the solvent output by the liquid inlet pipe 11 can form a swirling flow (as shown by the direction of a curved arrow in fig. 2) on the surface of the skin 5 in a negative pressure state, so that the surface of the skin 5 can be sufficiently washed, the washing efficiency of the surface pollutants on the skin 5 is effectively improved, and the pollutants on the surface of the skin 5 are guaranteed to be dissolved as much as possible and sucked out by the liquid outlet pipe 12 to enter the collecting pipe. Or the distance between the inner port of the liquid inlet pipe 11 and the skin 5 is 0-3 mm; the distance between the inner port of the liquid inlet pipe 11 and the skin 5 is 0.3-1.5 mm, so that the inner port of the liquid outlet pipe 12 cannot be blocked when the skin 5 in a negative pressure state is raised to a certain extent at the collecting port 13. And the pipe diameter of the liquid inlet pipe 11 is 1.3-1.8 times, preferably 1.5 times of the pipe diameter of the liquid outlet pipe 12. The collection chamber 20 is the open structure in top, and the detachably of the opening department of collection chamber 20 is coincided and is equipped with air exhaust device 4, and air exhaust device 4 is used for making and forms the negative pressure in the collection chamber 20, and air exhaust device 4's volume flow is 50 ~ 100 ml/min.
Continuing to refer to fig. 1 and 2, the utility model discloses a preparation instrument of adopting device: manufacturing a collection chamber 10 with a liquid inlet pipe 12 and a liquid outlet pipe 12 and a bottom end which is hollow, wherein the periphery of the lower end of the collection chamber 10 is attached with a rubber sucker, the liquid inlet pipe 11 is connected with a solvent chamber 30, a certain volume of solvent is added into the solvent chamber 30 for dissolving pollutants on the skin 5, corresponding solvents can be selected according to the dissolving degree of different chemicals, and usually deionized water, ethanol, isopropanol, acetone, phosphate buffer solution and the like are used as sampling solvents; effluent pipe 12 is connected to additional collection chamber 10 and collection chamber 10 is connected to an aerodynamic sampling pump device to maintain the negative pressure state of the entire sampling system device.
The method comprises the following steps: the lower end of a collection chamber 10 is placed on the surface of relatively flat skin 5 to be sampled, usually the back of a hand or an arm, or the surface of exposed skin 5, an air power device (namely an air extraction device 4) is started (at a flow rate of 50 ml/min), a sucker at the lower edge of the collection chamber 10 is ensured to suck the skin 5, a certain volume of solvent (usually 50-100 ml) is injected into a solvent chamber 30, the solvent is washed away from the surface of the skin 5, and a swirling flow is formed because a liquid inlet pipe 11 and a liquid outlet pipe 12 are on the same horizontal plane, so that the surface of the skin 5 can be sufficiently washed, pollutants on the surface of the skin 5 are ensured to be dissolved as much as possible, and are sucked out by the liquid outlet pipe 12 to enter a collection pipe, and the surface of the skin 5. The lotion in the collection tube can be sent to a laboratory for measurement, and the amount or concentration of the pollutants on the surface of the skin 5 can be accurately measured.
And (3) experimental verification:
experiment one, taking Dimethylformamide (DMF) as an example: dimethylformamide is an important chemical raw material and an organic solvent, is widely applied to the industries of polyurethane, acrylon, medicine, pesticide, dye, electronics and the like, and is particularly applied to the industries of synthetic leather production, acrylon production and the like recently. At the production and use sites of DMF, which can be absorbed by the human body through the respiratory tract and the skin 5, especially in the case where the skin 5 of workers working in summer is exposed, the exposure absorbed through the skin 5 is not negligible. DMF contact not only causes irritation symptoms of skin 5 mucosa, but also mainly causes acute and chronic toxic liver damage. Assessment and intervention of the exposure of the skin 5 to the touch is therefore an important step in preventing health damage to the working workers.
Experiment two, using deionized water as solvent: use the present case utility model's sampling device to the naked skin 5 of 10 workers of a certain synthetic leather manufacturing plant sample, use gas chromatography to detect the sample of gathering, detect the pollution amount of 5DMF of unit area skin, it is average 2.62 + 0.16ug/cm to record the result2The removal efficiency was 98.5% + 1.9%.
A traditional skin 5 surface wiping sampling method is adopted, deionized water is used as a solvent, fiber filter paper is used as a wiping filter membrane, wiping sampling is carried out on the same area (drawing a circle with the radius of 2 cm) of the skin 5 at the position close to the skin 5 of the same worker, the pollution amount of 5DMF (dimethyl formamide) of the skin in unit area is detected by a gas chromatography, and the average value is 1.95 plus 0.23 ug/cm2The average removal efficiency was 91.3% + 3.1%. The two groups of results were statistically treated and had significant differences (P)<0.05) in which the concentration per unit area of the contaminant obtained with the novel sampling device is significantly highThe results obtained with the conventional skin 5 swab sampling.
Two kinds of sampling method testing results are compared, find to use the present case utility model's 5 top layer chemical contamination sampling device of skin, can effectively improve the removal efficiency of 5 pollutants of skin, can more accurately assess the pollution situation of 5 chemicals of skin to provide the evidence for taking effective measure to prevent that skin 5 from absorbing.
The above-mentioned be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and the ordinary use of this design is right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.
Claims (9)
1. Simple and easy convenient skin top layer chemical contamination sampling device, including the sampling device main part, its characterized in that: the sampling device body is divided into an independent collection chamber, a collection chamber and a solvent chamber by partition plates; the collection chamber is provided with a liquid inlet pipe and a liquid outlet pipe, the bottom of the sampling device main body is provided with a collection port abutted against skin, an outer port of the liquid inlet pipe extends into a solvent of the solvent chamber, an inner port of the liquid inlet pipe is abutted against the skin at the collection port, an outer port of the liquid outlet pipe extends into the collection chamber, an inner port of the liquid outlet pipe is abutted against the skin at the collection port, and a washing area is formed between the inner port of the liquid inlet pipe and the inner port of the liquid outlet pipe; the collecting chamber is of a structure with an open top, the opening of the collecting chamber is detachably assembled with an air extractor in an inosculating way, and the air extractor is used for enabling the collecting chamber to form negative pressure.
2. The simple and convenient sampling device for chemical pollutants on the surface of skin as claimed in claim 1, which is characterized in that: the inner port of the liquid inlet pipe and the inner port of the liquid outlet pipe are positioned on the same horizontal plane.
3. The simple and convenient sampling device for chemical pollutants on the surface of skin as claimed in claim 1, which is characterized in that: the pipe diameter of the liquid inlet pipe is 1.3-1.8 times of that of the liquid outlet pipe.
4. The simple and convenient sampling device for chemical pollutants on the surface of skin as claimed in claim 1, which is characterized in that: the collecting opening is circular, and the diameter of the collecting opening is 1-5 cm; the distance between the inner port of the liquid inlet pipe and the inner port of the liquid outlet pipe is 0.6-0.9 times of the diameter of the collecting port.
5. The simple and convenient sampling device for chemical pollutants on the surface of skin as claimed in claim 1 or 2, which is characterized in that: the distance between the inner port of the liquid inlet pipe and the skin is 0-3 mm; the distance between the inner port of the liquid inlet pipe and the skin is 0.3-1.5 mm.
6. The simple and convenient sampling device for chemical pollutants on the surface of skin as claimed in claim 1, which is characterized in that: the sampling solvent arranged in the solvent chamber is n-hexane, dichloroethane, deionized water, ethanol, isopropanol, acetone or phosphate buffer.
7. The simple and convenient sampling device for chemical pollutants on the surface of skin as claimed in claim 1, which is characterized in that: the periphery of the acquisition opening is fixedly sleeved with a sealing ring.
8. The simple and convenient sampling device for chemical pollutants on the surface of skin as claimed in claim 7, which is characterized in that: the sealing ring is of a sucker structure with a through hole in the center.
9. The simple and convenient sampling device for chemical pollutants on the surface of skin as claimed in claim 1, which is characterized in that: the volume flow of the air exhaust device is 50-100 ml/min.
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| CN201920135987.6U CN209789830U (en) | 2019-01-27 | 2019-01-27 | simple and convenient skin surface layer chemical pollutant sampling device |
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| CN201920135987.6U CN209789830U (en) | 2019-01-27 | 2019-01-27 | simple and convenient skin surface layer chemical pollutant sampling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620166A (en) * | 2019-01-27 | 2019-04-16 | 泉州市安科职业卫生技术服务有限公司 | Simple easily skin surface chemical pollutant sampling apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620166A (en) * | 2019-01-27 | 2019-04-16 | 泉州市安科职业卫生技术服务有限公司 | Simple easily skin surface chemical pollutant sampling apparatus |
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