CN211179512U - Ferric ion detection reagent tube - Google Patents
Ferric ion detection reagent tube Download PDFInfo
- Publication number
- CN211179512U CN211179512U CN201922064707.XU CN201922064707U CN211179512U CN 211179512 U CN211179512 U CN 211179512U CN 201922064707 U CN201922064707 U CN 201922064707U CN 211179512 U CN211179512 U CN 211179512U
- Authority
- CN
- China
- Prior art keywords
- cock
- tube
- sleeve
- colorimetric
- developing agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The utility model relates to a ferric ion's detect reagent pipe belongs to water quality testing and monitoring technology field, has solved the problem that does not have the reagent pipe that will develop color medicament and reagent pipe looks integration that is applicable to ferric ion detection among the current ferric ion testing process. The utility model discloses a detection reagent tube includes colour comparison tube, colour comparison tube cock and colour-developing agent cock, the colour comparison tube cock is connected with the colour comparison tube, and the colour comparison tube cock is provided with a sleeve; the sleeve is provided with internal threads, the bottom of the sleeve is provided with a sealing film, and the outer circular surface of the sleeve is provided with a reinforcing strip; the color developing agent cock comprises a screw cap and a screw rod, the screw rod is connected with the sleeve, and a groove is formed in the bottom of the screw rod. The utility model discloses a detect reagent pipe, with solid developer preassembled to the recess of screw rod tip in, push away release color development medicament, simple structure, convenient operation with the seal membrane through the precession screw rod.
Description
Technical Field
The utility model relates to a water quality testing and monitoring technology field especially relates to a ferric ion's detect reagent pipe.
Background
Iron is a trace element necessary for human body, and iron is one of essential elements constituting human body, and has various physiological functions in human body. In daily life, iron element accounts for a corresponding proportion of trace elements absorbed by human bodies through drinking water, and the detection of iron ion content is a detection item specified by national drinking water standards. Ferric ion is a common iron ion, and is mainly present in iron salts and solutions thereof. Ferric ions are highly oxidative, and the solution is brownish yellow, but the color of the ferric ions is not the color of the ferric ions themselves, but the complex formed by the reaction of the lewis acid and water. The ferric ion has stronger oxidability and easy hydrolysis, and can catalyze various reactions. Ferric ions are extremely toxic and have strong oxidizing action in human bodies to cause organ failure of human bodies. Therefore, the detection and analysis of ferric ions in the environmental water body are particularly important.
No matter in the existing national and industrial standard methods, the water sample to be detected is stored and transported back to a laboratory for detecting ferric ions in water, or the concentration of the ferric ions in the water to be detected is detected on site, the chromogenic reagent and the water sample to be detected are required to carry out chromogenic reaction, no matter in the laboratory detection method or the site detection method, a certain amount of the water sample to be detected needs to be removed, and then the chromogenic reagent is released into the water sample to be detected. In the laboratory detection method, a water sample needs to be separately collected, acidified and fixed, a traditional reagent bottle is used during experimental analysis, reagents needed to be used are prepared and stored in different bottles, and the reagents are respectively absorbed and dropped into the water sample to be detected during detection; in the field detection method, a common Hash powder bag is used for detecting the total iron ion amount and the ferrous iron ion amount of a water sample to be detected, and the content of ferric ions is obtained by subtraction.
In summary, neither a standard laboratory test method nor a field test method has a reagent tube suitable for ferric ion detection, in which a color reagent is integrated with the reagent tube.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the present invention aims to provide a reagent tube for detecting ferric ions, which is used to solve the problem that the existing ferric ion detection process does not have a reagent tube integrating a color-developing reagent and a reagent tube for detecting ferric ions.
The purpose of the utility model is mainly realized through the following technical scheme:
the reagent tube for detecting ferric ions provided by this embodiment includes a colorimetric tube, a colorimetric tube cock, and a color reagent cock, where the colorimetric tube cock is connected to the colorimetric tube, and a sleeve is disposed in the colorimetric tube cock; the sleeve is of a cylindrical structure and is provided with internal threads, the bottom of the sleeve is provided with a sealing film, and the outer circular surface of the sleeve is provided with a reinforcing strip; the color developing agent cock comprises a screw cap and a screw rod, the screw rod is connected with the sleeve, and a groove is formed in the bottom of the screw rod.
Further, the reinforcing bar is L-shaped, and the other end of the reinforcing bar is connected with the sealing film.
Further, the diameter of the groove is 2.5mm, and the depth is 2 mm; the internal diameter of sleeve is 5mm, and the height is 8 mm.
Further, the upper end of the colorimetric cylinder is a spiral opening, the height of the spiral opening is 7mm, and the diameter of the spiral opening is 11 mm.
Further, the colorimetric tube is made of transparent hard glass; the wall thickness of the colorimetric tube is 1mm, and the height of the colorimetric tube is 60 mm-85 mm.
Further, the colorimetric tube is circular, and the diameter of the colorimetric tube is 12-15 mm; the diameter of the colorimetric tube cock is equal to that of the colorimetric tube.
Further, the colorimetric tube is square, and the side length of the colorimetric tube is 12-15 mm; the diameter of the colorimetric tube cock is equal to the side length of the colorimetric tube.
Further, the colour comparison tube cock is made of plastics, the colour comparison tube cock is cylindrical, and the height of the colour comparison tube cock is 10 mm.
Further, the upper end of the color comparison tube cock is a solid plastic layer with the thickness of 3 mm.
Further, the height of the screw cap is 5mm, and the diameter size of the screw cap is equal to the diameter of the colorimetric tube cock; the diameter of the screw is 5mm, and the length is 13 mm.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
(1) the sleeve is arranged in the color comparison tube cock, the sealing film is arranged at the bottom of the sleeve, the reinforcing strips are arranged on the outer circumferential surface of the sleeve and connected with the sealing film, so that when the solid color developing agent is released, the sealing film at the bottom of the sleeve is ensured to be opened, the opened sealing film is prevented from falling off, the structure is simple and convenient, and the operation is easy;
(2) the groove is formed in the bottom of the screw, the solid color developing agent is preassembled in the groove, the screw is screwed in to push the sealing film at the bottom of the sleeve open, and then the solid color developing agent can be released, so that the structure is simple, and the operation is convenient and fast;
(3) by setting the size of the groove, the pre-loading mass of the solid color developing agent is only 0.05g, and compared with the liquid color developing agent which needs to be prepared for the second time, has larger preparation volume and uses more solid medicaments, the detection cost is reduced.
The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
FIG. 1 is a schematic view of the overall structure of a detection reagent tube;
FIG. 2 is a schematic diagram of a cuvette structure of a detection reagent tube;
FIG. 3 is a cross-sectional view of a stopcock of the cuvette that detects the reagent tube;
FIG. 4 is a bottom view of the cuvette cock of the detection reagent tube;
FIG. 5 is a schematic diagram showing the overall structure of a color reagent cock of the detection reagent tube;
FIG. 6 is a cross-sectional view of a color reagent cock of the detection reagent tube;
FIG. 7 is a bottom view of a color reagent cock of the detection reagent tube.
Reference numerals:
1-a colorimetric cylinder; 2-a color comparison tube cock; 21-a sleeve; 22-sealing film; 23-a reinforcing strip; 3-color reagent cock; 31-a nut; 32-screw rod; 321-groove.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of the invention, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit the scope of the invention.
The utility model discloses a concrete embodiment of the utility model, as shown in fig. 1-7, a ferric ion's detection reagent pipe is disclosed, including colour comparison tube 1, colour comparison tube cock 2 and colour development agent cock 3, colour comparison tube cock 2 and colour comparison tube 1 threaded connection, be provided with sleeve 21 in the colour comparison tube cock 2, sleeve 21 is the cylindric structure, and be provided with the internal thread, sleeve 21's bottom is provided with seal membrane 22, exemplarily, seal membrane 22 is the PVC membrane, adopt the bonding to glue the bottom of sleeve 21, sleeve 21's outer disc is provided with reinforcement bar 23, exemplarily, reinforcement bar 23 is the PVC material, reinforcement bar 23 glues on sleeve 21's outer disc, reinforcement bar 23 is connected with seal membrane 22, colour development agent cock 3 includes nut 31 and screw rod 32, screw rod 32 is connected with sleeve 21, screw rod 32 bottom is provided with recess 321.
Compared with the prior art, in the embodiment, the sleeve is arranged in the color comparison tube cock, the sealing film is arranged at the bottom of the sleeve, the reinforcing strips are arranged on the outer circumferential surface of the sleeve and connected with the sealing film, and when the solid color developing agent is released, the sealing film at the bottom of the sleeve is ensured to be opened, and the opened sealing film is prevented from falling; the groove is formed in the bottom of the screw, the solid color developing agent is preassembled in the groove, the screw is screwed in to push the sealing film at the bottom of the sleeve open, so that the solid color developing agent can be released, the detection reagent tube is simple in structure, and the operation of releasing the solid color developing agent is convenient and fast; by setting the size of the groove, the pre-loading mass of the solid color developing agent is only 0.05g, and compared with the liquid color developing agent which needs to be prepared for the second time, has larger preparation volume and uses more solid medicaments, the detection cost is reduced.
In order to facilitate the colorimetric operation of the developed water sample to be detected in the detection process, the colorimetric tube 1 is made of transparent hard glass; in the embodiment, a portable spectrophotometer needs to be carried to detect a water sample to be detected, in order to match with a cuvette groove of the portable spectrophotometer, when the cuvette groove of the portable spectrometer is circular, a colorimetric tube 1 is circular, the diameter of the colorimetric tube 1 is slightly smaller than that of a colorimetric hole of the portable spectrophotometer, and the diameter of the colorimetric tube 1 is 12-15 mm; when the cuvette groove of the portable spectrophotometer is a square or rectangular strip, the colorimetric tube 1 is square, and the side length of the colorimetric tube 1 is 12-15 mm; the wall thickness of the cuvette 1 cannot be too thin, which is easy to break, nor too thick, which affects absorbance, and exemplarily, the wall thickness of the cuvette 1 is 1 mm; the height of the colorimetric tube 1 is set according to the colorimetric hole structure of the portable spectrophotometer, not only about two thirds of the tube body of the colorimetric tube 1 is ensured to be inserted into the colorimetric hole of the portable spectrophotometer, but also the colorimetric tube 1 with a certain distance is ensured to be exposed outside the colorimetric hole, so that the colorimetric tube 1 is conveniently inserted into and taken out of the colorimetric hole, and exemplarily, in order to be suitable for the American Hash DR2800 portable spectrophotometer, the height of the colorimetric tube 1 is designed to be 60 mm-85 mm; the upper end of the colorimetric tube 1 is a spiral opening, the height of the spiral opening is 7mm, the diameter of the colorimetric tube is 11mm, the height of the spiral opening is moderate, the manufacturing cost is high if the height is too long, and the colorimetric tube cock 2 is insecure if the height is too short.
In this embodiment, the colorimetric cylinder plug 2 is made of plastic and has a cylindrical structure; in order to facilitate the exertion of force by hand, the colorimetric tube cock 2 is screwed down or unscrewed, and the height of the colorimetric tube cock 2 is 10 mm; the diameter of the colorimetric tube cock 2 is equal to the diameter or side length of the colorimetric tube 1; in order to fix the sleeve 21 in the colorimetric tube cock 2 and prevent the sleeve 21 from shaking randomly, the upper end of the colorimetric tube cock 2 is a 3mm thick solid plastic layer, a hole is formed in the center of the solid plastic layer, the outer diameter of the sleeve 21 is in interference fit with the hole of the solid plastic layer, and the sleeve 21 can be fixed without other connection modes; the sleeve 21 is provided with an internal thread matched with the screw 32, and has an internal diameter of 5mm and a height of 8 mm.
The color developing agent cock 3 is made of plastic, the height of the nut 31 is required to be smooth when the color developing agent cock 3 is pinched by fingers to be screwed in and out, illustratively, the height of the nut 31 is 5mm, and the diameter of the nut 31 is equal to that of the colorimetric tube cock 2; the diameter of the screw 32 is 5mm, and in order to ensure that the screw 32 can burst the sealing film 22 at the bottom of the sleeve 21, the length of the screw 32 must be greater than the height of the sleeve 21, and exemplarily, the length of the screw 32 is set to be 13 mm. It should be noted that, the inner diameter of the sleeve 21 is set to be half of the outer diameter of the color comparison tube cock 2, which not only ensures the normal screwing and opening operation of the color comparison tube cock 2 and the color comparison tube 1, but also ensures the normal screwing operation of the screw rod 32 of the sleeve 21 and the color developing agent cock 3, the height 8mm of the sleeve 21 is smaller than the length 13mm of the screw rod 32, mainly ensuring that the screw rod 32 can smoothly burst the sealing film 22 at the bottom of the sleeve 21, and after the color developing agent cock 3 is screwed down, the top of the screw rod 32 has 5mm to expose the sleeve 21, and ensuring that the solid color developing agent in the groove 321 can be fully dissolved in a water sample or fully dissolved in a standard curve preparation solution.
Furthermore, the top end of the screw 32 is provided with a groove 321 with the diameter of 2.5mm and the depth of 2mm, and the groove is used for containing the solid color developing agent; a red line is marked at a position 8mm away from the top of the screw rod 32, and when the solid color developing agent is pre-filled in the groove 321, the screw rod 32 is just screwed into the sleeve 21 by 8mm, so that the top of the screw rod 32 is tightly attached to the PVC film at the bottom of the sleeve 21.
The field detection method using the detection reagent tube in the embodiment comprises the following steps:
step 1: preparing a prefilled liquid medicament; step 2: establishing a detection standard curve; and step 3: judging whether a detection standard curve needs to be reestablished; if necessary, executing the step 2, and if not, executing the step 4; and 4, step 4: and (5) detecting the water sample to be detected on site.
In the on-site detection method in the embodiment, the detection standard curve is established to carry out on-site test on the water sample to be detected, and compared with a laboratory detection method, the storage and transportation of the water sample to be detected are not required, so that the valence state conversion of iron ions in the water sample to be detected is avoided, and the detection accuracy is ensured; the field detection can be completed within 5-10 min, the water sample to be detected is transported to a laboratory for testing, the general test period is more than 24 hours, and the detection efficiency is improved.
In the embodiment, in the step 1, the prefilled liquid medicament is 0.5ml of PH adjusting and stabilizing solution, and the PH adjusting and stabilizing solution is prepared from 0.1ml of sulfuric acid solution with the mass percentage of 8% and 0.4ml of hydrochloric acid solution with the mass percentage of 10%; it should be noted that the pre-filled liquid medicament is filled into the colorimetric tube 1 in advance, and both takes part in the reaction in the process of testing the water sample to be tested and preparing the standard curve, that is, the pre-filled liquid medicament is present in the colorimetric tube 1 in the processes of testing the water sample to be tested and preparing the standard curve. The concentration and volume ratio of sulfuric acid and hydrochloric acid determine the stability of a red complex generated by ferric ions and a solid color developing agent (potassium thiocyanate) in a water sample to be tested, the accuracy of a test result is directly influenced, and a pre-filled liquid medicament prepared by 0.1ml of sulfuric acid solution with the mass percent of 8% and 0.4ml of hydrochloric acid solution with the mass percent of 10% is pre-filled in a colorimetric tube 1, so that the ferric ions and the solid color developing agent in the water generate the stable red complex, and the accuracy of the test result is ensured. In this embodiment, the prepared pre-filled liquid medicament enables the complex formed by the solid color developing agent and the complex formed by the liquid color developing agent used in the standard laboratory detection method to have the same stability, and the accuracy of the detection result is not affected, as shown in table 1.
TABLE 1 comparison of the concentration of ferric ion in water by detection method and laboratory standard method
Table 1 shows that the on-site detection method in this embodiment has a consistent detection result with a laboratory standard method (DZ/T0064.24-93), and there is no significant difference through T test, the sample spiking recovery rate of the on-site detection method in this embodiment is 95.07% to 106.17% (see table 2), it is to be noted that the sample spiking recovery rate is mainly used to illustrate the accuracy of the method, a certain amount of ferric ions are added to the sample, and then the detection method of this embodiment is used to detect whether the content of the added ferric ions can be accurately measured, and when the spiking recovery rate of 95.07% to 106.17% meets "DZ/T0130.6-2006 geological mineral laboratory test quality management specification 6: the requirement for the accuracy control of the detection method in the" water sample analysis "standard". DZ/T0130.6-2006 "standard requires that the concentration of the target to be measured in water is 1 mg/L, the recovery rate is allowed to be limited to 90% to 110%, and the detection method of this embodiment has a spiking recovery rate of 95.07% to 106.17%, and meets the requirement of the standard method.
TABLE 2 the utility model discloses a test mark for detecting method sample adding mark recovery rate
In this embodiment, in step 2, a detection standard curve is established, and the steps include:
step 2.1, preparing a standard solution, purchasing a ferric ion standard substance solution with a national standard substance certificate, and diluting the ferric ion standard solution into a series of standard solutions of 0.0 mg/L, 0.1 mg/L, 0.2 mg/L, 0.5 mg/L, 1.0 mg/L and 2.0 mg/L;
step 2.2, sampling standard solutions, namely respectively transferring 2.5ml of series of standard solutions of 0.0 mg/L, 0.1 mg/L, 0.2 mg/L, 0.5 mg/L, 1.0 mg/L and 2.0 mg/L into 6 colorimetric tubes 1 by using a syringe or a pipette, and screwing down a colorimetric tube cock 2;
step 2.3: carrying out color reaction on the standard solution; screwing the color developing agent cock 3 into the sleeve 21, screwing by force, tightly attaching the nut 31 of the color developing agent cock 3 to the colorimetric tube cock 2, ejecting the sealing film 22 at the bottom of the inner sleeve 21 of the colorimetric tube cock 2 by the screw 32 of the color developing agent cock 3, connecting the outer wall of the sleeve 21 with the sealing film 22 by the reinforcing strip 23, ejecting the sealing film 22, but not dropping, suspending the sealing film 22 on the outer wall of the sleeve 21 without influencing sample analysis, releasing the solid color developing agent, shaking uniformly, fully mixing and dissolving the water sample to be tested in the colorimetric tube 1 and the solid color developing agent, waiting for 5 minutes, and finishing color developing reaction.
It should be noted that, when the solid color developing agent is released, in the first case, the solid color developing agent smoothly falls into the colorimetric tube 1 and is mixed with the water sample to be measured; in the second case, even if some solid color developing agent remains in the groove 321, since the screw 32 of the color developing agent cock 3 has been screwed out of the sleeve by 5mm, when the sample is sufficiently shaken up, the groove 321 can be sufficiently cleaned by the sample to be measured in the colorimetric tube 1, so that the solid color developing agent is completely dissolved in the sample to be measured.
And 2.4, testing a standard solution, newly establishing a user program in a portable spectrophotometer in a mode of single wavelength and with an analysis wavelength of 480nm, entering a standard measurement (or reading) step after the setting is finished, carrying out instrument zero setting by taking 0.0 mg/L standard solution as a reference solution, respectively placing colorimetric tubes containing 0.0 mg/L, 0.1 mg/L, 0.2 mg/L, 0.5 mg/L, 1.0 mg/L and 2.0 mg/L series of standard solutions in a colorimetric hole in sequence for absorbance measurement, inputting a concentration value of the standard solution into the program when each standard solution sample is placed, automatically drawing a standard curve by the portable spectrophotometer after the absorbance measurement is finished, calculating a linear equation, finally storing a test program, adding the currently established in-situ ferric ion detection method in water in the portable spectrophotometer after the test program is stored, wherein the in-situ ferric ion detection method comprises the standard curve, calculating the linear equation of the data of the standard curve according to-be-tested data, and directly calling the DR 2803 in-situ detection method of the portable spectrophotometer adopting the DR test instrument.
TABLE 3 Standard Curve data of the in-water ferric ion on-site detection method established by the utility model
It should be noted that, when the water sample to be detected is detected in a short time, only the 'in-water ferric iron on-site detection method' stored in the portable spectrophotometer needs to be taken, and the detection standard establishment step does not need to be carried out again, namely, the detection standard can be established for one day when one detection standard is prepared, the detection standard establishment is carried out for one time without detecting one water sample to be detected, then, after the blank zeroing is carried out by using a reagent, the step 4 is directly carried out, the detection of one water sample to be detected is completed, the step 4 is still repeated for the next water sample to be detected, and when the water sample to be detected is continuously detected, the. After the on-site detection is completed on the same day, if the interval time is longer, the detection standard curve should be reestablished generally for more than two days, and when the on-site detection method for ferric ions in water is used again, the series of standard solutions need to be reconfigured, and the standard curve is updated to complete the calibration of the standard curve, so that the sample test can be continued.
In the field detection method of this embodiment, before the field detection of the water sample to be detected in step 4, it is determined whether a detection standard curve needs to be reestablished; if yes, step 2 is executed, if no, step 4 is executed, and the judgment basis is whether the detection standard established last time exceeds 24 hours.
Further, in step 4, the field detection of the water sample to be detected comprises the following steps:
step 4.1: sampling a water sample to be detected; using a syringe or a pipette to transfer 2.5ml of water sample to be detected into the colorimetric tube 1, and screwing down the colorimetric tube cock 2;
it should be noted that, if the water sample to be tested is turbid, the water sample to be tested should be filtered through a 0.45 μm filter membrane, and then 2.5ml of the water sample to be tested should be removed into the colorimetric tube 1.
Step 4.2: performing color reaction on a water sample to be detected; screwing the color developing agent cock 3 into the sleeve 21, screwing by force, tightly attaching the nut 31 of the color developing agent cock 3 to the colorimetric tube cock 2, ejecting the sealing film 22 at the bottom of the inner sleeve 21 of the colorimetric tube cock 2 by the screw 32 of the color developing agent cock 3, connecting the outer wall of the sleeve 21 with the sealing film 22 by the reinforcing strip 23, ejecting the sealing film 22, but not dropping, suspending the sealing film 22 on the outer wall of the sleeve 21 without influencing sample analysis, releasing the solid color developing agent, shaking uniformly, fully mixing and dissolving the water sample to be tested in the colorimetric tube 1 and the solid color developing agent, waiting for 5 minutes, and finishing color developing reaction.
It should be noted that 2.5ml of the water sample to be measured is transferred into the colorimetric tube, and then the screw 32 is screwed in to push open the sealing film 22, release the solid color developing agent, and shake uniformly; compared with the sequence of releasing the solid color developing agent and adding the water sample to be detected, the color developing agent can be stored for a long time, and the accuracy of detecting the content of ferric ions in water is ensured.
And 4.3, testing the water sample to be tested, calling out a newly established (or newly calibrated) in-water ferric iron field detection method from a user program of the portable spectrophotometer, carrying out instrument zero setting by taking a standard solution of 0.0 mg/L as a reference, placing the colorimetric tube 1 of the water sample to be tested in a colorimetric hole of the portable spectrophotometer, reading the concentration of ferric ions in the water sample to be tested, and finishing the field test.
It should be noted that the in-situ detection method for ferric ions in water stored by the portable spectrophotometer includes a standard curve and a linear equation, so that the portable spectrophotometer can automatically calculate the concentration of ferric ions in a water sample to be detected according to the measured absorbance when detecting the water sample to be detected, and display the concentration value of ferric ions on a screen.
In the field detection method of this embodiment, the solid developer is a high-grade pure potassium thiocyanate crystal, and the solid developer is preloaded in the groove 321, where the preloaded mass is 0.05 g. The purchased solid color developing agent is directly pre-installed in the groove 321, secondary preparation is not needed, and the pre-installation amount is only 0.05g, so that the detection cost is reduced compared with a liquid color developing agent which needs secondary preparation, has a larger preparation volume and uses more solid medicaments; the liquid color-developing agent used in the ferric ion detection method in the laboratory refers to a solution-state color-developing agent, and specifically refers to a liquid reagent prepared by dissolving a solid color-developing agent (potassium thiocyanate, sulfosalicylic acid or other color-developing agents) in a solvent (pure water, acid-base or other chemical solutions) according to a certain proportion, and the solution is used for the ferric ion complex color-developing reaction, namely the liquid color-developing agent. The liquid color developing agent is not easy to store, and in the embodiment, the solid color developing agent is a high-purity medicine, and the shelf life is generally more than one year. The liquid color developing agent is prepared from a high-purity solid medicine and a solvent, the concentration is low, the solvent contains water or an acid-base reagent, chemical components of the color developing agent are easy to change, the color developing agent loses efficacy and cannot normally perform color developing reaction, the effective period of the general liquid reagent is within three months, even the shelf life of some liquid reagents is only about one week, and individual liquid reagents need to be stored in a dark place, so that the liquid color developing agent is difficult to store, needs to be prepared frequently, and is high in cost. The utility model discloses an on-the-spot detection method and laboratory standard detection method reagent use amount are to showing for example in table 4. TABLE 4 reagent usage amount comparison table for detection method and laboratory standard detection method of the utility model
The utility model discloses a ferric ion detection reagent pipe, through being provided with the sleeve in the colour comparison tube cock, the bottom of sleeve is provided with the seal membrane, and the outer disc of sleeve is provided with the enhancement strip, and the enhancement strip is connected with the seal membrane, when solid colour-developing agent releases, can guarantee that the seal membrane of sleeve bottom is opened, the seal membrane of guaranteeing to open does not drop; the groove is formed in the bottom of the screw, the solid color developing agent is preassembled in the groove, the screw is screwed in to push the sealing film at the bottom of the sleeve open, so that the solid color developing agent can be released, the detection reagent tube is simple in structure, and the operation of releasing the solid color developing agent is convenient and fast; by setting the size of the groove, the pre-loading mass of the solid color developing agent is only 0.05g, and compared with the liquid color developing agent which needs to be prepared for the second time, has larger preparation volume and uses more solid medicaments, the detection cost is reduced.
The utility model discloses a ferric ion detects reagent pipe sets up the sleeve in the colour comparison tube cock, uses the seal membrane sealed to the sleeve, and the screw rod and the sleeve cooperation of colour development agent cock are examined time measuring to the water sample that awaits measuring in preassembling the recess of screw rod tip with solid colour development agent, and through precession screw rod with seal membrane top-opening release colour development medicament, simple structure, convenient operation.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. The reagent tube for detecting the ferric ions is characterized by comprising a colorimetric tube, a colorimetric tube cock and a color-developing agent cock, wherein the colorimetric tube cock is connected with the colorimetric tube, and a sleeve is arranged in the colorimetric tube cock; the sleeve is of a cylindrical structure and is provided with internal threads, the bottom of the sleeve is provided with a sealing film, and the outer circular surface of the sleeve is connected with a reinforcing strip; the color developing agent cock comprises a screw cap and a screw rod, the screw rod is connected with the sleeve, and a groove is formed in the bottom of the screw rod.
2. The cuvette according to claim 1, wherein the reinforcing bar has a shape of L, and the other end of the reinforcing bar is connected to the sealing film.
3. The detector reagent tube of claim 2, wherein the groove has a diameter of 2.5mm and a depth of 2 mm; the internal diameter of sleeve is 5mm, and the height is 8 mm.
4. The detection reagent tube of claim 3, wherein the upper end of the colorimetric tube is a spiral opening, and the spiral opening has a height of 7mm and a diameter of 11 mm.
5. The detection reagent tube of claim 4, wherein the colorimetric tube is made of transparent hard glass; the wall thickness of the colorimetric tube is 1mm, and the height of the colorimetric tube is 60 mm-85 mm.
6. The detection reagent tube of claim 5, wherein the cuvette is circular, and the diameter of the cuvette is 12mm to 15 mm; the diameter of the colorimetric tube cock is equal to that of the colorimetric tube.
7. The detection reagent tube of claim 5, wherein the cuvette is square, and the side length of the cuvette is 12mm to 15 mm; the diameter of the colorimetric tube cock is equal to the side length of the colorimetric tube.
8. The detection reagent tube of claim 1, wherein the cuvette cock is made of plastic, the cuvette cock is cylindrical, and the height of the cuvette cock is 10 mm.
9. The test reagent tube of claim 8 wherein the upper end of the cuvette tap is a 3mm thick solid plastic layer.
10. The detection reagent tube of any one of claims 1-9, wherein the screw cap has a height of 5mm and a diameter equal to the diameter of the colorimetric tube plug; the diameter of the screw is 5mm, and the length is 13 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922064707.XU CN211179512U (en) | 2019-11-26 | 2019-11-26 | Ferric ion detection reagent tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922064707.XU CN211179512U (en) | 2019-11-26 | 2019-11-26 | Ferric ion detection reagent tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211179512U true CN211179512U (en) | 2020-08-04 |
Family
ID=71826817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922064707.XU Active CN211179512U (en) | 2019-11-26 | 2019-11-26 | Ferric ion detection reagent tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211179512U (en) |
-
2019
- 2019-11-26 CN CN201922064707.XU patent/CN211179512U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2210095B1 (en) | Percutaneous biological fluid sampling and pre shaking devices and methods | |
| Burleigh Jr et al. | A method for titrating oxygen-sensitive organic redox systems with reducing agents in solution | |
| CN103575913B (en) | The urinalysis test card of microdose urine protein/UCr | |
| EP2850428A2 (en) | Method and apparatus for analyzing acetone in breath | |
| CN101806715A (en) | Variable-volume microfluidic chip for colorimetric assay | |
| CN103234959A (en) | Water quality nitrate detection agent | |
| CN110907371B (en) | On-site detection reagent tube for ferric ions in water and detection method | |
| CN105004719A (en) | Urine iodine determination kit and applications thereof | |
| CN211179512U (en) | Ferric ion detection reagent tube | |
| CN109115760B (en) | Rapid detection kit and detection method for urine sugar content based on chloroauric acid color reaction | |
| CN201527427U (en) | Liquid sample detection device | |
| AU734428B2 (en) | Method for analyzing formaldehyde in ambient air | |
| CN102928353B (en) | Preparation method and using method for developing detection piece for determining copper ions in water | |
| CN101995454B (en) | Detecting device and using method thereof | |
| CN102901709B (en) | Preparation and use method for color development detecting sheet for detecting sulfide in water | |
| CN110286196A (en) | A method of with quick, Accurate Determining drinking water chlorine residue on site | |
| CN112798585A (en) | Color development tube for on-site determination of ferrous concentration in water and detection method | |
| US11553861B1 (en) | Apparatus to detect salt concentrations and glucose in bodily fluids | |
| CN101900671A (en) | Method for fast measuring ozone in water and apparatus thereof | |
| CN204330583U (en) | A kind of liquid absorbance measuring device | |
| CN216013152U (en) | Color development tube for on-site determination of ferrous concentration in water | |
| TWM617129U (en) | Biochemical measurement device | |
| Simões et al. | Flow injection determination of metronidazole through spectrophotometric measurement of the nitrite ion produced upon alkaline hydrolysis | |
| Revanasiddappa et al. | Sensitive spectrophotometric determination of metoclopramide hydrochloride and dapsone in bulk sample and dosage forms | |
| CN104819980A (en) | Method for detecting nitrogen dioxide gas by using solid reagents in field environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |