CN114486778B - Detection device and method for heavy metal ions - Google Patents
Detection device and method for heavy metal ions Download PDFInfo
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- CN114486778B CN114486778B CN202210054696.0A CN202210054696A CN114486778B CN 114486778 B CN114486778 B CN 114486778B CN 202210054696 A CN202210054696 A CN 202210054696A CN 114486778 B CN114486778 B CN 114486778B
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- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/3103—Atomic absorption analysis
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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
- G01N1/34—Purifying; Cleaning
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- 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
-
- 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
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
Abstract
The invention relates to the technical field of heavy metal ion detection and discloses a detection device and a detection method for heavy metal ions. Through the design of the filtering mechanism, when heavy metal ions in a water source are detected, the water source is injected into the filtering frame through the water injection pipe, the filter screen can filter large-particle impurities, and after the large-particle impurities are filtered, the situation that the traditional detection of the water source is carried out, the manual removal of the impurities in the water source is needed to be carried out, so that the detection is prevented from being interfered is effectively avoided.
Description
Technical Field
The invention relates to the technical field of heavy metal ion detection, in particular to a detection device and a detection method for heavy metal ions.
Background
The cation formed by the heavy metal is the heavy metal ion, which is not strictly defined at present, generally refers to the ionic state formed by losing electrons of the heavy metal, most of the heavy metal ions are generated in the industrial production process, and heavy metal pollution is caused if the heavy metal ions are discharged to the nature without treatment, so that the removal of the heavy metal ions in industrial wastewater is also an important link, the metal is divided into heavy metal and light metal according to the density of the metal, and the metal with the density of more than 4.5g/cm3 is often called heavy metal, such as: about 45 kinds of gold, silver, copper, lead, zinc, nickel, cobalt, chromium, mercury, cadmium and the like, and the heavy metals in terms of environmental pollution refer to: heavy metals with remarkable biological toxicity such as mercury, cadmium, lead, chromium, metalloid arsenic and the like have 5 types of maximum toxicity to human bodies: lead, mercury, chromium, arsenic and cadmium cannot be decomposed in water, and toxicity is amplified after people drink the water.
At present, the existing heavy metal ions are generally generated in the industrial production process, and when the wastewater with the heavy metal content exceeding the standard flows into a drinking water source, the heavy metal ions of the drinking water source can be caused to exceed the standard, but a large number of complex steps are required to be consumed when the water source with the heavy metal ions is detected at present, and the detection is troublesome.
Disclosure of Invention
The invention aims to provide a detection device and a detection method for heavy metal ions, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a detection device and method for heavy metal ion, includes the table body, table body top fixedly connected with box, the box top is provided with filtering mechanism, the inside fixedly connected with precipitation mechanism of box, box one side fixedly connected with detection mechanism.
The filter mechanism comprises a filter frame, the filter frame is arranged at the top of the box body, the bottom of the filter frame is fixedly connected with an annular plate, the top of the box body extends into the bottom side of the annular plate, the top of the box body is fixedly connected with a sealing gasket, the top of the sealing gasket is attached to the inner side of the annular plate, a partition plate is arranged in the filter frame, and the outer side surface of the partition plate is attached to the inner side surface of the filter frame.
Preferably, the equal fixedly connected with mounting panel in annular plate bottom both sides, mounting panel one side is laminated mutually with box one side, the fixed plate passes through bolt fixed connection with the box, filter frame top fixedly connected with water injection pipe, water source through the water injection pipe will wait to detect is poured into.
Preferably, the filter screen is fixedly connected with in the middle of the baffle, baffle bottom fixedly connected with two risers, the baffle bottom is provided with first threaded rod, first threaded rod runs through two risers respectively and rotates with the riser to be connected, the outside fixedly connected with rotor plate of first threaded rod, the filter screen filters large-scale particulate matter impurity in the moisture.
Preferably, the outside two screw thread pieces that are provided with of first threaded rod, two screw thread pieces are run through respectively to first threaded rod and pass through threaded connection with the screw thread piece, riser one side fixedly connected with two spacing telescopic links, spacing telescopic link one side and screw thread piece one side fixed connection, the mounting groove has been seted up to box inner chamber side wall, the equal fixedly connected with cardboard in screw thread piece top and bottom, two the cardboard all extends into the mounting groove inside and with mounting groove assorted, first threaded rod both ends screw thread opposite direction, two screw thread pieces deviate from or move in opposite directions respectively when rotating.
Preferably, the precipitation mechanism comprises a motor, the motor is fixedly connected to one side of the box body, the motor is fixedly connected with a rotating rod through an output shaft, the rotating rod penetrates through one side wall of the box body and is rotationally connected with the box body, one side of the box body is fixedly connected with a protection frame, the motor is fixedly connected to the inside of the protection frame, and the protection frame protects the motor.
Preferably, the dwang outside is provided with the gear box, the dwang runs through the gear box and is connected through the water-repellent bearing with the gear box, the inside transmission telescopic link that is provided with of gear box, the transmission telescopic link runs through the gear box bottom and is connected through the water-repellent bearing with the gear box, transmission telescopic link bottom fixedly connected with plectane, plectane bottom fixedly connected with second threaded rod, the round hole has been seted up to the box inside, the cavity has been seted up to the box bottom, the cavity sets up in the round hole bottom and is linked together with the round hole, box bottom fixedly connected with blow off pipe, the blow off pipe runs through table top, blow off pipe one side is provided with the valve, and the silt after the sediment passes through the blow off pipe and discharges outside.
Preferably, the outside fixedly connected with first bevel gear of dwang, transmission telescopic link top fixedly connected with second bevel gear, second bevel gear sets up in first bevel gear bottom, second bevel gear and first bevel gear looks meshing, the equal fixedly connected with of box inside both sides link up the pole, fixedly connected with auxiliary block between two link up the pole, the second threaded rod runs through auxiliary block and passes through threaded connection with auxiliary block, second threaded rod bottom fixedly connected with dog, dog and round hole phase-match, the dog shelters from the round hole.
Preferably, the detection mechanism comprises an atomic absorption spectrometer body, a water outlet pipe is fixedly connected to one side of the box body, a regulating plate is arranged inside the water outlet pipe, the regulating plate penetrates through the top of the water pipe, a push-pull plate is fixedly connected to one side of the top of the regulating plate, a sliding groove is formed in one side of the box body, a sliding block is fixedly connected to one side of the regulating plate, the sliding block is arranged inside the sliding groove, a spring is fixedly connected to the top of the sliding block, the top of the spring is fixedly connected with the top of the inner side of the sliding groove, and the regulating plate controls whether filtered water flows out to the outside.
The invention provides a detection method of heavy metal ions, which comprises the following steps:
s, sample extraction
After water source to be detected is injected into the filter frame through the water injection pipe, large-particle impurities are filtered out through the filter screen, then the large-particle impurities are deposited in the box body, substances such as tiny sediment which can not be filtered by the filter screen in water fall into the cavity through the round hole, after the deposition is completed, the motor works to drive the rotating rod to rotate, the rotating rod drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the transmission telescopic rod to rotate, then the second threaded rod moves downwards after the inside rotation of the auxiliary block to drive the stop dog to block the round hole, the sediment is prevented from flowing back upwards, then the regulating plate is pulled upwards, water in the water tank flows out through the water outlet pipe, the flowing water is accepted as a test sample, after the regulating plate is loosened, the spring provides reverse thrust, the regulating plate moves downwards again to block the water outlet pipe, finally, after the fixed state between the fixed plate and the box body is released, the rotating plate is rotated, the first threaded rod drives the two threaded blocks to move towards the middle, the inside the mounting groove is blocked, the baffle plate is not limited, and the impurities are filtered out uniformly after the baffle plate is taken out.
S2, detecting and debugging
Firstly, a hollow cathode lamp of an element to be detected is arranged on an atomic absorption spectrometer body, then, an atomic absorption spectrometer body switch is turned on, the wavelength is adjusted, the hollow cathode lamp is turned on, working parameters are set, larger passband width can be selected for elements with simple spectral lines such as Cu, mg and the like, passband width of elements with complex spectral lines such as Fe, mn and the like is smaller, then stability inspection is carried out, relative standard deviation RST is less than 5%, and the correlation coefficient of a technical performance inspection standard curve is up to 3 pieces of 9.
S3, detection process
The common elements have a plurality of resonance lines for selection, the most suitable wavelength is selected according to the concentration range to be detected in the test solution, and the wavelength with the highest sensitivity is selected if the concentration of the element to be detected is very low; if the concentration of the element to be measured is high, in order to avoid the error caused by excessive dilution, the wavelength with lower sensitivity is selected, and a deflection burner is also adopted to reduce the absorbance, so that the absorbance value of the standard series and the sample is not higher than 0.6, otherwise, the standard curve is seriously bent, the error is increased, and the optimal absorbance is between 0.1 and 0.5.
Compared with the prior art, the invention provides a detection device and a detection method for heavy metal ions. The beneficial effects are as follows:
1. through the design of the filtering mechanism, after the water source to be detected is injected into the filtering frame through the water injection pipe, the filter screen can filter out large-particle impurities, and after the large-particle impurities are filtered, the situation that the traditional water source is detected, the manual removal of the impurities in the water source is needed to be carried out, so that the interference to detection is avoided can be effectively avoided.
2. Through the design of a precipitation mechanism, fine sediment and other substances in water which cannot be filtered by a filter screen fall into a cavity through a round hole, and then the second threaded rod moves downwards to drive a stop block to block the round hole after rotating in an auxiliary block, so that the influence of upward backflow of sediment on experiments is avoided, and the particulate impurities in water are further removed through the steps, so that the interference to a detection instrument is avoided.
3. The utility model provides a detection device and method for heavy metal ion, through detection mechanism's design, will regulate and control the board and upwards stimulate, the inside water of water tank flows out through the outlet pipe, accepts as test sample to the water that flows out, can simply and conveniently control whether the inside water of box is discharged to the external world through regulating and controlling the board, and whole process is simple convenient.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is an enlarged view at B in FIG. 2;
fig. 5 is an enlarged view at C in fig. 2.
In the figure: 1. a table body; 2. a case; 3. a filtering mechanism; 31. a filter frame; 32. an annular plate; 33. a sealing gasket; 34. a partition plate; 35. a mounting plate; 36. a filter screen; 37. a riser; 38. a first threaded rod; 39. a rotating plate; 391. a screw block; 392. a limiting telescopic rod; 393. a clamping plate; 4. a precipitation mechanism; 41. a motor; 42. a rotating lever; 43. a gear frame; 44. a transmission telescopic rod; 45. a circular plate; 46. a second threaded rod; 47. a blow-down pipe; 48. a first bevel gear; 49. a second bevel gear; 491. a connecting rod; 492. an auxiliary block; 493. a stop block; 5. a detection mechanism; 51. an atomic absorption spectrometer body; 52. a water outlet pipe; 53. a regulation plate; 54. a slide block; 55. and (3) a spring.
Detailed Description
The following description of the embodiments of the present invention 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 invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a detection device and method for heavy metal ion, includes table body 1, table body 1 top fixedly connected with box 2, box 2 top is provided with filtering mechanism 3, and box 2 inside fixedly connected with deposits mechanism 4, and box 2 one side fixedly connected with detection mechanism 5.
The filtering mechanism 3 comprises a filtering frame 31, the filtering frame 31 is arranged at the top of a box body 2, an annular plate 32 is fixedly connected to the bottom of the filtering frame 31, the top of the box body 2 extends into the bottom side of the annular plate 32, a sealing pad 33 is fixedly connected to the top of the box body 2, the top of the sealing pad 33 is attached to the inside of the annular plate 32, a partition 34 is arranged in the filtering frame 31, the outer side surface of the partition 34 is attached to the inner side surface of the filtering frame 31, mounting plates 35 are fixedly connected to the two sides of the bottom of the annular plate 32, one side of each mounting plate 35 is attached to one side of the box body 2, the fixing plates are fixedly connected with the box body 2 through bolts, a water injection pipe is fixedly connected to the top of the filtering frame 31, a filter screen 36 is fixedly connected to the middle of the partition 34, two vertical plates 37 are fixedly connected to the bottom of the partition 34, first threaded rods 38 are arranged at the bottom of the partition 34, the first threaded rods 38 respectively penetrate through the two vertical plates 37 and are rotatably connected with the vertical plates 37, the outside fixedly connected with rotating plate 39 of first threaded rod 38, the outside of first threaded rod 38 is provided with two screw thread pieces 391, first threaded rod 38 runs through two screw thread pieces 391 respectively and pass through threaded connection with screw thread pieces 391, riser 37 one side fixedly connected with two spacing telescopic links 392, spacing telescopic link 392 one side and screw thread piece 391 one side fixedly connected with, the mounting groove has been seted up to box 2 inner chamber side wall, screw thread piece 391 top and bottom all fixedly connected with clamping plate 393, two clamping plates 393 all extend into the mounting groove inside and match with the mounting groove, precipitation mechanism 4 includes motor 41, motor 41 fixedly connected with box 2 one side, motor 41 is through output shaft fixedly connected with dwang 42, dwang 42 runs through a box 2 lateral wall and rotates with box 2 to be connected, box 2 one side fixedly connected with guard frame, motor 41 fixedly connected with guard frame inside, the outside of the rotating rod 42 is provided with a gear frame 43, the rotating rod 42 penetrates through the gear frame 43 and is connected with the gear frame 43 through a water-repellent bearing, the inside of the gear frame 43 is provided with a transmission telescopic rod 44, the transmission telescopic rod 44 penetrates through the bottom of the gear frame 43 and is connected with the gear frame 43 through the water-repellent bearing, the bottom of the transmission telescopic rod 44 is fixedly connected with a circular plate 45, the bottom of the circular plate 45 is fixedly connected with a second threaded rod 46, a round hole is formed in the inside of the box 2, a cavity is formed in the bottom of the box 2 and is arranged at the bottom of the round hole and communicated with the round hole, the bottom of the box 2 is fixedly connected with a drain pipe 47, the drain pipe 47 penetrates through the top of the table body 1, one side of the drain pipe 47 is provided with a valve, the outside of the rotating rod 42 is fixedly connected with a first bevel gear 48, the top of the transmission telescopic rod 44 is fixedly connected with a second bevel gear 49, the second bevel gear 49 is arranged at the bottom of the first bevel gear 48, the second bevel gear 49 is meshed with the first bevel gear 48, the connecting rods 491 are fixedly connected to two sides of the inside of the box body 2, an auxiliary block 492 is fixedly connected between the two connecting rods 491, the second threaded rod 46 penetrates through the auxiliary block 492 and is in threaded connection with the auxiliary block 492, a stop 493 is fixedly connected to the bottom of the second threaded rod 46, the stop 493 is matched with a round hole, the detection mechanism 5 comprises an atomic absorption spectrometer body 51, a water outlet pipe 52 is fixedly connected to one side of the box body 2, a regulating plate 53 is arranged in the water outlet pipe 52, the regulating plate 53 penetrates through the top of the water pipe, a push-pull plate is fixedly connected to one side of the top of the regulating plate 53, a chute is formed in one side of the box body 2, a sliding block 54 is fixedly connected to one side of the regulating plate 53, the sliding block 54 is arranged in the chute, a spring 55 is fixedly connected to the top of the sliding block 54, and the top of the spring 55 is fixedly connected to the top of the inner side of the chute.
The invention provides a detection method of heavy metal ions, which comprises the following steps:
s1, sample extraction
After a water source to be detected is injected into the filter frame 31 through the water injection pipe, large-particle impurities are filtered out through the filter screen 36, then the large-particle impurities fall into the box 2 to be precipitated, when substances such as fine sediment which cannot be filtered by the filter screen 36 in water fall into the cavity through round holes, after the precipitation is completed, the motor 41 works to drive the rotating rod 42 to rotate, the rotating rod 42 drives the first bevel gear 48 to rotate, the first bevel gear 48 drives the second bevel gear 49 to rotate, the second bevel gear 49 drives the transmission telescopic rod 44 to rotate, at the moment, the second threaded rod 46 moves downwards to drive the stop 493 to block the round holes after the inside of the auxiliary block 492 rotates, the sediment is prevented from flowing back upwards, then the regulating plate 53 is pulled upwards, water in the water tank flows out through the water outlet pipe 52 to be used as a test sample, after the regulating plate 53 is loosened, the spring 55 provides reverse thrust, the regulating plate 53 moves downwards again to block the water outlet pipe 52, finally, the fixing state between the fixing plate and the box 2 is released by screwing bolts, the filter frame 31 is taken out, the rotating plate 39 is driven by the first bevel gear 49 to drive the two middle blocks to move upwards, and then the filter plate 393 is uniformly filtered out, and the filter screen 34 is removed after the filter screen 393 is installed, and the impurities are removed from the filter frame 34 is uniformly, and the filter plate is removed after the filter plate 393 is removed, and the filter plate is mounted.
S2, detecting and debugging
Firstly, a hollow cathode lamp of an element to be detected is arranged on an atomic absorption spectrometer body 51, then, the atomic absorption spectrometer body 51 is turned on, the wavelength is adjusted, the hollow cathode lamp is turned on, working parameters are set, larger passband width can be selected for elements with simple spectral lines such as Cu, mg and the like, passband width of elements with complex spectral lines such as Fe, mn and the like is smaller, then, stability inspection is carried out, the relative standard deviation RST is less than 5%, and the correlation coefficient of a technical performance inspection standard curve is up to 3 pieces of 9.
S3, detection process
The common elements have a plurality of resonance lines for selection, the most suitable wavelength is selected according to the concentration range to be detected in the test solution, and the wavelength with the highest sensitivity is selected if the concentration of the element to be detected is very low; if the concentration of the element to be measured is high, in order to avoid the error caused by excessive dilution, the wavelength with lower sensitivity is selected, and a deflection burner is also adopted to reduce the absorbance, so that the absorbance value of the standard series and the sample is not higher than 0.6, otherwise, the standard curve is seriously bent, the error is increased, and the optimal absorbance is between 0.1 and 0.5.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A detection device for heavy metal ion, includes the table body (1), its characterized in that: the novel multifunctional table is characterized in that the top of the table body (1) is fixedly connected with a box body (2), the top of the box body (2) is provided with a filtering mechanism (3), the interior of the box body (2) is fixedly connected with a precipitation mechanism (4), and one side of the box body (2) is fixedly connected with a detection mechanism (5);
the filtering mechanism (3) comprises a filtering frame (31), the filtering frame (31) is arranged at the top of the box body (2), an annular plate (32) is fixedly connected to the bottom of the filtering frame (31), the top of the box body (2) extends into the bottom side of the annular plate (32), a sealing gasket (33) is fixedly connected to the top of the box body (2), the top of the sealing gasket (33) is attached to the inside of the annular plate (32), a partition plate (34) is arranged in the filtering frame (31), and the outer side surface of the partition plate (34) is attached to the inner side surface of the filtering frame (31);
the two sides of the bottom of the annular plate (32) are fixedly connected with mounting plates (35), one side of each mounting plate (35) is attached to one side of the box body (2), the mounting plates (35) are fixedly connected with the box body (2) through bolts, and the top of the filtering frame (31) is fixedly connected with a water injection pipe;
the filter screen (36) is fixedly connected in the middle of the partition plate (34), two vertical plates (37) are fixedly connected to the bottom of the partition plate (34), a first threaded rod (38) is arranged at the bottom of the partition plate (34), the first threaded rod (38) penetrates through the two vertical plates (37) respectively and is rotationally connected with the vertical plates (37), and a rotating plate (39) is fixedly connected to the outside of the first threaded rod (38);
the novel structure is characterized in that two thread blocks (391) are arranged outside the first threaded rod (38), the first threaded rod (38) penetrates through the two thread blocks (391) respectively and is in threaded connection with the thread blocks (391), two limiting telescopic rods (392) are fixedly connected to one side of the vertical plate (37), one side of each limiting telescopic rod (392) is fixedly connected with one side of each thread block (391), a mounting groove is formed in one side wall of an inner cavity of the box body (2), clamping plates (393) are fixedly connected to the top and the bottom of each thread block (391), and the two clamping plates (393) extend into the mounting groove and are matched with the mounting groove;
the sedimentation mechanism (4) comprises a motor (41), the motor (41) is fixedly connected to one side of the box body (2), the motor (41) is fixedly connected with a rotating rod (42) through an output shaft, the rotating rod (42) penetrates through one side wall of the box body (2) and is rotationally connected with the box body (2), a protection frame is fixedly connected to one side of the box body (2), and the motor (41) is fixedly connected to the inside of the protection frame;
the novel sewage treatment device is characterized in that a gear frame (43) is arranged outside the rotating rod (42), the rotating rod (42) penetrates through the gear frame (43) and is connected with the gear frame (43) through a water-proof bearing, a transmission telescopic rod (44) is arranged inside the gear frame (43), the transmission telescopic rod (44) penetrates through the bottom of the gear frame (43) and is connected with the gear frame (43) through a water-proof bearing, a circular plate (45) is fixedly connected to the bottom of the transmission telescopic rod (44), a second threaded rod (46) is fixedly connected to the bottom of the circular plate (45), a round hole is formed in the box (2), a cavity is formed in the bottom of the box (2), the cavity is formed in the bottom of the round hole and is communicated with the round hole, a sewage discharge pipe (47) is fixedly connected to the bottom of the box (2), and the sewage treatment pipe (47) penetrates through the top of the table body (1), and a valve is arranged on one side of the sewage treatment pipe (47).
The novel automatic transmission device is characterized in that a first bevel gear (48) is fixedly connected to the outside of the rotating rod (42), a second bevel gear (49) is fixedly connected to the top of the transmission telescopic rod (44), the second bevel gear (49) is arranged at the bottom of the first bevel gear (48), the second bevel gear (49) is meshed with the first bevel gear (48), connecting rods (491) are fixedly connected to the two sides of the inside of the box body (2), an auxiliary block (492) is fixedly connected between the two connecting rods (491), the second threaded rod (46) penetrates through the auxiliary block (492) and is in threaded connection with the auxiliary block (492), a stop block (493) is fixedly connected to the bottom of the second threaded rod (46), and the stop block (493) is matched with a round hole;
detection mechanism (5) are including atomic absorption spectrometer body (51), box (2) one side fixedly connected with outlet pipe (52), outlet pipe (52) inside is provided with regulation and control board (53), regulation and control board (53) run through the water pipe top, regulation and control board (53) top one side fixedly connected with push-and-pull board, the spout has been seted up to box (2) one side, regulation and control board (53) one side fixedly connected with slider (54), slider (54) set up inside the spout, slider (54) top fixedly connected with spring (55), spring (55) top and the inboard top fixedly connected with of spout.
2. The method of using a detection apparatus for heavy metal ions according to claim 1, comprising the steps of:
s1, sample extraction
After a water source to be detected is injected into the filtering frame (31) through a water injection pipe, large-particle impurities are filtered out through a filter screen (36), then the large-particle impurities fall into the box body (2) to be precipitated, when fine sediment substances which cannot be filtered by the filter screen (36) in water fall into a cavity through a round hole, after the precipitation is finished, a motor (41) works to drive a rotating rod (42) to rotate, the rotating rod (42) drives a first bevel gear (48) to rotate, the first bevel gear (48) drives a second bevel gear (49) to rotate, the second bevel gear (49) drives a transmission telescopic rod (44) to rotate, at the moment, the second threaded rod (46) moves downwards to drive a stop block (493) to block the round hole after the inside of an auxiliary block (492) rotates, the sediment is prevented from flowing upwards, then a regulating plate (53) is pulled upwards, water in the water tank flows out through a water outlet pipe (52) to serve as a test sample, after the regulating plate (53) is released, a spring (55) provides reverse thrust, the plate (53) moves downwards again to block the water outlet pipe (52), the water outlet pipe (52) is regulated and finally, the threaded rod (35) is driven to rotate, and the middle threaded rod (39) is removed after the middle block (35) is screwed out, and the threaded rod (39) is fixed after the middle block (35) is moved, after the clamping plate (393) is clamped into the mounting groove, the partition plate (34) is not limited any more, and impurities filtered out of the filter screen (36) are uniformly treated after the partition plate (34) is taken out;
s2, detecting and debugging
Firstly, mounting a hollow cathode lamp of an element to be detected on an atomic absorption spectrometer body (51), then starting a switch of the atomic absorption spectrometer body (51) and adjusting the wavelength, lighting the hollow cathode lamp, setting working parameters, selecting larger passband width for elements with simple Cu and Mg spectral lines, and smaller passband width for elements with complex Fe and Mn spectral lines, then performing stability inspection, wherein the relative standard deviation RST is less than 5%, and the correlation coefficient of a technical performance inspection standard curve is up to 3 pieces of 9;
s3, detection process
The common elements have a plurality of resonance lines for selection, the most suitable wavelength is selected according to the concentration range to be detected in the test solution, and the wavelength with the highest sensitivity is selected if the concentration of the element to be detected is very low; if the concentration of the element to be measured is high, in order to avoid the error caused by excessive dilution, the wavelength with lower sensitivity is selected, and a deflection burner is also adopted to reduce the absorbance, so that the absorbance value of the standard series and the sample is not higher than 0.6, otherwise, the standard curve is seriously bent, the error is increased, and the optimal absorbance is between 0.1 and 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054696.0A CN114486778B (en) | 2022-01-18 | 2022-01-18 | Detection device and method for heavy metal ions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054696.0A CN114486778B (en) | 2022-01-18 | 2022-01-18 | Detection device and method for heavy metal ions |
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| Publication Number | Publication Date |
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| CN114486778A CN114486778A (en) | 2022-05-13 |
| CN114486778B true CN114486778B (en) | 2023-10-03 |
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| CN (1) | CN114486778B (en) |
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| CN114486778A (en) | 2022-05-13 |
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