KR102327202B1 - Trace element measuring device and measuring method - Google Patents

Abstract

A trace element measuring device according to the present invention, which is a trace element measuring device for measuring a component contained in a sample solution, comprises: a bottle housing consisting of a sample bottle, a distilled water bottle and a standard solution bottle; a compressing pump motor for pumping any one solution among a sample solution, a buffer solution, distilled water and a standard solution contained in each bottle of the bottle housing; a quantitative weighing cell for receiving a solution, which is pumped and supplied by the compressing pump motor, and discharging a set quantity of the solution; a nitrogen purging cell for nitrogen-purging the quantity of the solution transmitted from the quantitative weighing cell; a main cell for accommodating a solution transmitted from the nitrogen purging cell and measuring a component contained in the sample solution by forming a mercury electrode, supplying current to induce the chemical reaction of oxidation and reduction and measuring voltage and current; and an SoC for controlling a solution to be introduced into the main cell by controlling a fifth switch valve between the bottle housing and the compressing pump motor, the compressing pump motor, a fourth switch valve between the compressing pump motor and the quantitative weighing cell, a third switch valve between the quantitative weighing cell and the nitrogen purging cell, and a first switch valve between the nitrogen purging cell and the main cell. Therefore, a process can be made convenient and a processor can perform operation without any control or interference of other electronic circuits during the measurement of a trace element.

Description

Trace element measuring device and measuring method {TRACE ELEMENT MEASURING DEVICE AND MEASURING METHOD}

The present invention relates to an apparatus and a method for measuring trace elements, and more particularly, a sample solution contained in a sample solution bottle is quantitatively purged with nitrogen and then moved to a main cell, a mercury electrode is formed inside the main cell, and then a current is applied. It relates to a device for measuring trace elements and a method for detecting heavy metals contained in a sample solution by application.

The conventional electronic system supplies the distilled water container, the electrolyte container, and the liquid contained in the sample to the inside of the cell through a number of precision injectors and complex connection lines and switch valves, or uses distilled water or nitrogen to remove the remaining liquid in the tube, By making the oxidation-reduction reaction proceed, the voltage-current is measured to measure trace elements.

However, in the conventional configuration and method, the method of supplying the standard sample to the cell and the method of supplying other samples to the cell were binary, so the liquid transfer line was complicated, and the product cost increased due to the use of an expensive precision injector, making it uneconomical. and the electronic control system is complicated, requiring a lot of hardware capacity.

And in order to reduce the operation time and cost of the precision injector for sample quantification, the high-head pressure pump was used to quantify and moved to the nitrogen purging cell. At this time, the error was relatively high to quantify a small amount of 10ml or less.

Also, in order to transmit and process commands between the drive and control unit, a general computer was used for the drive and control unit and the microcomputer, although it was mounted in the housing.

However, in order to simultaneously measure oxidation-reduction in a desired way, the time of oxidation-reduction is important. Because of the time to transmit and process commands, time was required for conversion for oxidation-reduction, especially in automatic execution. There was a problem with automatic execution.

Republic of Korea Patent Publication No. 10-0485989

In order to solve the above problems, the present invention includes a standard sample in the transfer line of other samples, adds a washing method with software, and develops a VolCell (quantitative weighing cell) with a quantitative cup added to the existing nitrogen purging cell. An object of the present invention is to provide an apparatus and method for measuring trace elements that can perform nitrogen purging while performing accurate quantification.

In order to solve the above problems, the present invention uses a SoC (System on Chip) chip as a main device that integrates driving and control and signal processing and management to form one SoC chip and several peripheral auxiliary circuits, one board (One Board). An object of the present invention is to provide an apparatus and method for measuring trace elements that can configure hardware to perform a unified process.

According to the present invention for achieving the above object, the trace element measuring device is a trace element measuring device for measuring components contained in a sample solution, and a bottle housing comprising a sample bottle, a buffer bottle, a distilled water bottle, and a standard solution bottle. ; a compression pump motor for pumping any one of a sample solution, a buffer solution, distilled water, or a standard solution contained in each bottle of the bottle housing; a metering cell for receiving a solution pumped by the compression pump motor and discharging a set amount of solution; a nitrogen purging cell for purging the solution of the quantity delivered from the quantitative measurement cell with nitrogen; a main cell receiving the solution transferred from the nitrogen purging cell, forming a mercury electrode, and then supplying an electric current to cause an oxidation-reduction chemical reaction to measure the voltage by measuring the components contained in the sample solution; and a fifth switch valve between the bottle housing and the compression pump motor, the compression pump motor, a fourth switch valve between the compression pump motor and the metering cell, and a third switch between the metering cell and the nitrogen purging cell. and a valve, an SoC that controls a first switch valve between the nitrogen purging cell and the main cell to control the solution to flow into the main cell.

In another embodiment, the method for measuring a trace element according to the present invention for achieving the above object comprises the steps of: (a) waiting for the measurement of the trace element to be measured; (b) measuring the blank by allowing the SoC of the trace element measurement to be transferred to the main cell with a buffer solution or distilled water; (c) measuring a component of a standard solution for setting a standard of a heavy metal component to be detected by causing the SoC to move the standard solution to the main cell; (d) measuring the heavy metal contained in the sample solution by causing the SoC to move the sample solution to the main cell; and (e) determining, by the SoC, whether the measurement of the sample solution has been performed for a set number of times when automatic measurement is set after the SoC confirms the automatic measurement step.

Preferably, in step (d) of the method for measuring trace elements according to the present invention for achieving the above object, (d-1) the SoC rotates the fifth valve switch and the fourth valve switch by a set angle to form a sample bottle and forming a flow path leading to the compression pump motor and the metering cell; (d-2) the SoC drives the compression pump motor to introduce the sample solution from the sample bottle into the quantitative metering cell; (d-3) the SoC rotates the third valve switch by a set angle to form a flow path between the quantitative metering cell and the nitrogen purging cell, and then introducing a fixed amount of the sample solution into the nitrogen purging cell; (d-4) the SoC rotates the first valve switch by a set angle to form a flow path between the nitrogen purging cell and the main cell, and then introducing the nitrogen-purged sample solution into the main cell; (d-5) forming, by the SoC, a mercury electrode in the main cell; and (d-6) measuring the components contained in the sample solution by measuring the voltage-current by causing the SoC to cause an oxidation-reduction chemical reaction by applying a current to the mercury electrode and the platinum electrode formed as the main cell; characterized in that

More preferably, in the steps (b) and (c) of the method for measuring trace elements according to the present invention for achieving the above object, the SoC rotates the fifth valve switch by an angle set in the step (d-1). to form a flow path leading to the buffer bottle, the compression pump motor and the metering cell, a flow path leading to the distilled water bottle, the compression pump motor, and the metering cell, or a flow path leading to the standard solution bottle, the compression pump motor, and the metering cell. Except, performing the steps (d-2) to (d-6), measuring the blank, and measuring the components of the standard solution.

The apparatus and method for measuring trace elements according to the present invention have the effect of simplifying the process because there is no need for a computer or other electronic device to perform each process, and during the measurement of trace elements, the processor can use any other electronic devices. It has the effect of being able to perform a task without the control or interference of the circuit.

1 is a block diagram of an apparatus for measuring trace elements according to the present invention.
2 is a diagram illustrating a connection relationship between cells, a solenoid, and a switch valve in the apparatus for measuring trace elements according to the present invention.
3 is a flowchart of a method for measuring trace elements according to the present invention.
4 to 7 are diagrams illustrating operation codes of the apparatus for measuring trace elements according to the present invention and operation contents thereof.

The terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, so they can be substituted at the time of the present application. It should be understood that various equivalents and modifications may be made.

Hereinafter, an apparatus for measuring trace elements according to the present invention will be described with reference to the accompanying drawings.

The internal and external components constituting the apparatus for measuring trace elements according to the present invention will be described in more detail with reference to FIGS. 1 and 2 .

First, the apparatus for measuring trace elements according to the present invention includes a pre-processing device (1), a storage device (2), a CCTV (3), a serial communication unit (4), a TCP/IP (5), an operation button (6), a bottle housing (100) ), the SoC 200 , the SSR module 300 , the valve module 400 , the motor module 500 , and the main cell 600 .

The pretreatment device 1 performs a pretreatment operation of making a sample solution by irradiating ultraviolet rays to wastewater or tap water, which is a target for measuring trace elements, to kill bacteria and remove organic matter.

The storage device 2 may be configured in plurality to store trace element information measured by the trace element measuring device, current information for a specific voltage, and the like.

The CCTV 3 may be installed in the device for measuring trace elements according to the present invention to monitor whether a person other than the person concerned touches the device for measuring trace elements, and to monitor manipulation of measured values and the like.

The serial communication unit 4 is configured to enable serial communication with an external device in a manner such as RS-232C, RS-422A, RS-485, or USB, and the trace amount measured by the trace element measuring device according to the present invention. Allows element data to be transmitted to an external device.

The TCP/IP (5) is another communication port that can communicate with an external device and can transmit data between computers using different operating systems, so it is a standard network transmission protocol for information transmission on the Internet.

The operation button 6 is an input device such as a mouse or keyboard, which is operated by the user, and transmits the information collected from the storage device 2 to the SoC 200 or an external device, or transmits necessary information. You can request it, and you can configure the environment settings, etc.

The bottle housing 100 includes a sample bottle 110 , a buffer bottle 120 , a distilled water bottle 130 , and a standard solution bottle 140 inside the housing as shown in FIG. 2 .

The sample bottle 110 contains a sample solution to be measured for trace elements.

The buffer bottle 120 accommodates a sample solution that is slightly lower than the concentration of the sample solution accommodated in the sample bottle 110, and the buffer solution that is suddenly introduced before the high concentration sample solution flows into the main cell 600. is accepted.

The distilled water bottle 130 contains distilled water for washing the path through which the previous solution has moved.

The standard solution bottle 140 contains a standard solution to set standards for detecting heavy metals such as mercury, copper, zinc, cadmium, and chromium contained in the sample solution.

The SoC 200 includes an interface unit 210 , an SSR control unit 220 , a motor control unit 230 , and a cell driving & measuring unit 240 .

The interface unit 210 is connected to the preprocessor (1), the storage device (2), the CCTV (3), the serial communication unit (4), the TCP/IP (5), the operation button (6) to receive necessary data and export.

The SSR control unit 220 controls the SSR driving unit 10 electrically connected to the plurality of nitrogen flow control first SSR to fourth SSRs 310 , 320 , 330 , and 340 constituting the SSR module 300 , and as a result, the first SSR to control the opening and closing operations of the fourth SSRs 310 , 320 , 330 , and 340 .

The motor control unit 230 includes a first switch valve 410 having a DC motor for controlling the valve module 400 connected to the main cell, a second switch valve 420 having a DC motor for controlling the mercury valve, and a nitrogen purging cell. A third switch valve 430 having a DC motor for connecting valve control, a fourth switch valve 440 having a DC motor for controlling an external drain connection valve, and a third switch valve having a DC motor for controlling the sample, distilled water, and electrolyte solution injection valve Controls the 5 switch valve 450 and the motor driving unit 20 electrically connected to the sixth switch valve 460 having a DC motor for controlling the spare valve.

Additionally, the motor control unit 230 includes the motor driving unit 20 electrically connected to the agitator motor 510 , the mercury injection motor 520 , the compression pump motor 530 , and the spare motor 540 of the motor module 500 . ) can also be controlled.

The cell driving & measuring unit 240 is connected to the main cell 600 through a digital-to-analog converter 30 and an analog-to-digital converter 40, and converts the measurement current into data depending on the intended use. The potential difference of the standard solution is measured.

The SSR module 300 is a first SSR (310) that opens and closes a path through which nitrogen flows into the nitrogen purging cell (600a) from the nitrogen gas cylinder, and the quantitative metering cell (600b) solution flows into the nitrogen purging cell (600a) The second SSR 320 that opens and closes the second SSR 320, the third SSR 330 that opens and closes the atmospheric exposure of the nitrogen purging cell 600, and the connection between the metering cell 600b and the pump connected through the external drain and a fourth SSR 410 .

The main cell 600 has a platinum electrode 610 on the upper side, a red-phase mercury electrode 620 on the lower side, a full-phase mercury electrode wire 630 , and a reference electrode 640 on the lower side.

A mercury-coated glass carbon electrode may be formed in the main cell 600 instead of the droplet mercury electrode 620 .

In a state in which the sample solution is introduced into the main cell 600, a current is supplied to the platinum electrode 610 and the droplet mercury electrode 620 to cause an oxidation-reduction chemical reaction and measure the voltage to measure the heavy metal contained in the sample solution. can be detected.

A digital-to-analog converter 30 or an analog-to-digital converter 40 is formed between the main cell 600 and the SoC 200 so that the detection result of the main cell 600 is digital, analog, or analog. It can be easily converted to digital.

The apparatus for measuring trace elements according to the present invention further includes a power supply unit 60 and a monitor 70, wherein the power supply unit 60 supplies power required for the apparatus for measuring trace elements according to the present invention to operate, and the SoC The monitor 70 connected to 200 displays the detection result of the main cell 600 as a voltage-current graph to indicate which heavy metal was detected at a specific voltage.

That is, the power supply unit 60 can supply voltages +3.3V, +5V, +12V, and ±15V and is connected to the SoC 200 . The power of the power supply unit 60 is integrally supplied to the SSR control unit 220, the motor control unit 230 and the cell driving & measuring unit 240 connected to the SoC 200 according to the power required in each configuration. make it possible

On the other hand, the first to fifth switch valves 410, 420, 430, 440, 450 that determine the movement path of the sample solution, buffer solution, distilled water, standard solution, or nitrogen under the control of the SoC 200 are as shown in FIG. It has a selection path (a, date, T-shape) to selectively control or open and close the moving direction of liquid or gas, and when these selection paths are rotated, they operate downward when they are arranged like a “∧” in the drawing. The angle (hereinafter referred to as the angle) is 0°, meaning that it operates at an angle of 90° to the left, 180° to the upward, and 270° to the right.

For example, when the selection pipe 411 of the first switch valve 410 is at an angle of 180° (upward), by connecting the nitrogen purging cell 600a and the main cell 600, the nitrogen purging cell 600a Nitrogen or liquid filled therein is introduced into the main cell 600 .

However, the first to fifth switch valves (410, 420, 430, 440, 450) are not necessarily limited to the angle of 90 degrees as described above, so the path is not changed as it rotates, but the path is closed and opened as the path is rotated by a predetermined angle. may be changed.

Meanwhile, a quantitative metering cell 600b is formed around the nitrogen purging cell 600a so that an accurate amount of nitrogen or liquid can be introduced into the main cell 600 .

That is, the metering cell 600b includes a first port 610b of a metering cell, a second port 620b of a metering cell, a third port 630b of the metering cell, and a fourth port 640b of the metering cell. .

The first port 610b of the weighing cell is connected to the fourth switch valve 440, and the second port 620b of the weighing cell is connected to the input terminal of the fourth SSR 340 for controlling the nitrogen flow, The third port 630b of the weighing cell is connected to the third switch valve 430 , and the fourth port 640 of the weighing cell is connected to an output terminal of the second SSR 320 that controls the nitrogen flow.

The quantitative weighing cell 600b is connected to the switch valve or the SSR module 300 as described above so that the sample solution, buffer solution, distilled water, or standard solution can be introduced into the main cell 600 in a quantitative amount. let it be

Hereinafter, the coupling relationship of the second to fourth switch valves 420, 430, 440, 450 is substantially the same as the coupling relationship of the first switch valve 410 described above as shown in FIG. to be omitted.

However, the fifth switch valve 450 is radially disposed on the circumferential surface, and the first port 451 connected to the distilled water bottle 130 and the standard solution bottle 140, and the first port 451 A second port 452 connected to the buffer bottle 120 while forming an interval of 90°, a third port 453 connected to the sample bottle 110 while forming an interval of 90° with the second port 452, and the A fourth port 454 exposed while forming an interval of 90° from the third port 453, and a fifth port 455 disposed to protrude in the center and connected to the connector input of the compression pump motor 530 are provided. do.

The compression pump motor 530 pumps a sample solution, a buffer solution, distilled water, or a standard solution from a bottle connected to an open port among the first to third ports connected to the fifth switch valve 450 .

The computer 50 is connected to the connection port of the microelement measuring device according to the present invention to update the software in which the microelement measuring device is driven, and if there is a problem, it can be solved, and data, etc. can be backed up. have.

3 to 7, a method for measuring trace elements according to the present invention will be described.

The trace element measurement system according to the present invention performs a state of waiting for measurement (S100).

The trace element measurement system according to the present invention performs a blank (BLANK) measurement step (S200).

More specifically, when explaining the blank measurement step, the SoC 200 performs the step of introducing the buffer solution (S210).

In more detail with respect to step S210, the SoC 200 rotates the third switch valve 430 by a predetermined angle to expose the quantitative metering cell 600b to the atmosphere, and the fourth switch valve 440 is rotated to connect the metering cell 600b and the outlet of the compression pump motor 530 , and the fifth switch valve 450 is rotated to connect the metering cell 600b to the buffer bottle 120 .

Thereafter, it is the same as the procedure described below for injecting distilled water from the distilled water bottle 130 into the quantitative metering cell 600b.

The SoC 200 performs a step of moving the introduced buffer solution (S220).

In more detail with respect to step S220, the SoC 200 rotates the third switch valve 430 by a predetermined angle to connect the quantitative measurement cell 600b to the SSR1 310, and a fourth switch valve Rotating 430 cuts off the connection between the metering cell 600b and the compression pump motor 530 .

The SoC 200 rotates the first switch valve 410 to cut off the connection between the quantitative metering cell 600b and the main cell 600 .

Then, the SoC 200 turns on the SSR3 330 to expose the nitrogen purging cell 600a to the atmosphere, and turns on the SSR2 320 to turn on the quantitative metering cell 600b and the nitrogen purging cell ( 600a), and the SSR1 (S310) is turned on so that nitrogen supply and solution movement can be made to connect the quantitative metering cell 600b and the corresponding SSR1 (310).

After maintaining the time for the solution to move for a predetermined time, the SoC 200 turns off the SSR3 330 to block the exposure of the nitrogen purging cell 600a to the atmosphere, and turns off the SSR2 320 to turn off the quantitative determination. The metering cell 600b and the nitrogen purging cell 600a are cut off, and the SSR1 (S310) is turned off to cut off the nitrogen supply to the metering cell 600b.

After a predetermined time delay, the SoC 200 turns on the SSR4 340 to connect the metering cell 600a and the second pump connected to the external drain, and operates the second pump to operate the metering cell 600b ) to remove the excess solution.

The SoC 200 stops the operation of the second pump and turns off the SSR4 340 to cut off the connection between the metering cell 600b and the second pump and delay it for a predetermined time.

The SoC 200 performs the step of introducing the distilled water (S230).

In more detail with respect to step S230, the SoC 200 rotates the third switch valve 430 by a predetermined angle to expose the quantitative metering cell 600b to the atmosphere, and the fourth switch valve 440 is rotated to connect the metering cell 600b and the outlet of the compression pump motor 530 , and the fifth switch valve 450 is rotated to connect the metering cell 600b to the distilled water bottle 130 .

The SoC 200 drives the compression pump motor 530 to operate it by a fixed amount, then puts it dormant for a predetermined time, and exposes the compression pump motor 530 to the atmosphere by positioning the fifth switch valve 450 on the rear side. .

When the SoC 200 is dormant for a predetermined time, the SoC 200 re-drives the compression pump motor 530, injects air into the compression pump motor 530 exposed to the atmosphere, and transfers the remaining tube solution to the total amount of the metering cell ( 600b).

The SoC 200 turns on the SSR4 340 to connect the metering cell 600a and the second pump connected to the external drain, and operates the second pump to drain the solution overflowing from the metering cell 600b. Remove.

The SoC 200 stops the operation of the second pump and turns off the SSR4 340 to cut off the connection between the metering cell 600b and the second pump and delay it for a predetermined time.

The SoC 200 performs a step (S240) of moving the introduced distilled water. Since the algorithm of step S240 is the same as that of step S220, a detailed description thereof will be omitted.

Next, nitrogen purging of the distilled water solution injected into the quantitative metering cell 600b is performed (S250).

The SoC 200 rotates the third switch valve 430 by a predetermined angle to connect the nitrogen purging cell 600a and the SSR1 310 , and rotates the fourth switch valve 440 for quantitative measurement. The cell 600b and the outlet of the compression pump motor 530 are cut off, and the first switch valve 410 is rotated to cut off the connection between the quantitative metering cell 600b and the main cell 600 .

The SoC 200 turns on the SSR1 310 and SSR3 330 to supply nitrogen to the nitrogen purging cell 600a, and after maintaining the nitrogen for a predetermined time, the first switch valve 410 is rotated to control nitrogen. The purging cell 600a and the main cell 600 are connected.

The SoC 200 turns off the SSR3 330 and the SSR1 310 to cut off the nitrogen supply, and when the solution in the nitrogen purging cell 600a moves to the main cell 600 by free fall, the first

The switch valve 410 is controlled to rotate to cut off the nitrogen purging cell 600a and the main cell 600 .

Next, the SoC 200 performs a step of removing mercury (HG) formed on the lower mercury electrode inside the main cell 600 and replacing it with new mercury (S260).

To describe step S260 in more detail, the SoC 200 checks the origin of the mercury injection motor 520, and if it is not the origin, opens the mercury cap to discharge the measured amount once, and then discharges the measured amount again dozens of times. inhale mercury.

The SoC 200 checks the origin of the mercury injection motor 520 , and if it is not the origin, discharges the excess amount of mercury and inhales the mercury again.

That is, the SoC 200 rotates the second switch valve 420 to introduce the mercury from the mercury container into the mercury injector, and drives the mercury injection motor 520 to inject the mercury from the lower part to the upper part in a syringe manner. The mercury electrode is formed by allowing the mercury to condense inside the main cell 600 through the injector.

The SoC 200 performs the step of discarding the preservation solution (S270).

The SoC 200 rotates the first switch valve 410 to connect the main cell 600 and the drain tube, and drives the first pump connected to the drain tube, and at the same time, the agitator motor of the main cell 600 While stirring 510, even mercury and other deposits formed on the mercury electrode of the main cell 600 can be drained cleanly.

Thereafter, the SoC 200 stops the first pump and the agitator motor 510 when all of the solution contained in the main cell 600 is drained.

As described above, the trace element measurement system according to the present invention performs a step of measuring a standard solution when the blank measurement step is completed (S300).

That is, the SoC 200 of the microelement measurement system according to the present invention rotates the fifth switch valve 450 by a predetermined angle in the same manner as in the procedure for measuring the blank as described above, and the standard solution bottle 140 After pumping the standard solution to the metering cell 600b and moving it to the metering cell 600b, rotate the third switch valve 430 to transfer the metered standard solution to the nitrogen purging cell 600a through nitrogen purging. to be removed.

The nitrogen-purged standard solution is injected into the main cell 600 in the trace element measurement system according to the present invention, a mercury electrode is formed, and then a voltage is applied to set the standard as a standard solution.

When the reference is set by measuring the standard solution in step S300, the system for measuring trace elements according to the present invention performs the step of measuring the sample solution (S400).

That is, the trace element measurement system according to the present invention uses the fifth switch valve 450 and the compression pump motor 530 for the sample solution to be measured for trace elements such as wastewater or tap water in a specific area accommodated in the sample bottle 110 . ), the fourth switch valve 440 , the quantitative metering cell 600b , the third switch valve 430 , the nitrogen purging cell 600a , and the first switch valve 410 are controlled to flow into the main cell 600 . Then, a voltage is applied to the mercury electrode and the platinum electrode to cause an oxidation-reduction reaction to measure the components of heavy metals in the sample solution.

When the sample solution measurement is completed, the SoC 200 checks the automatic measurement step (S500) and, if automatic measurement is set, determines whether the sample solution measurement has been performed for a set number of times (S600) After performing, If the sample measurement is made a set number of times, the trace element measurement is terminated, and if the sample measurement is not made a set number of times, the process after step S400 is repeated.

On the other hand, in the other trace element measurement system according to the present invention, when the sample of the sample solution is changed, the process after step S200 of washing the tube to which the sample solution is moved with distilled water and resetting the standard to the standard sample is repeated.

In the above, the technical idea of the present invention has been described along with the accompanying drawings, but this is an exemplary description of a preferred embodiment of the present invention and does not limit the present invention. In addition, it is a clear fact that anyone with ordinary knowledge in the technical field to which the present invention pertains can make various modifications and imitations without departing from the scope of the technical spirit of the present invention.

1: pre-processing device 2: storage device
3: CCTV 4: Serial communication unit
5: TCP/IP 6: Operation button
10: SSR driving unit 20: motor driving unit
30: digital-analog converter 40: analog-digital converter
50: computer 60: power supply
70: monitor
100: bottle housing
110: sample bottle 120: buffer bottle
130: distilled water bottle 140: standard solution bottle
200: SoC
210: interface unit 220: SSR control unit
230: motor control unit 240: cell driving & measuring unit
300: SSR module
310: first SSR 320: second SSR
330: third SSR 340: fourth SSR
400: valve module
410: first switch valve 420: second switch valve
430: third switch valve 440: fourth switch valve
450: fifth switch valve 451: first port
452: second port 453: third port
454: 4th port 455: 5th port
460: sixth switch valve
500: motor module
510: agitator motor 520: mercury injection motor
530: compression pump motor 540: spare motor
600: main cell
610: platinum electrode 620: red phase mercury electrode to the bottom
630: mercury electrode wire 640: reference electrode
600a: nitrogen purging cell
600b: quantitative weighing cell
610b: the first port of the weighing cell 620b: the second port of the weighing cell
630b: weighing cell third port 640: weighing cell fourth port

Claims (9)

In the trace element measuring device for measuring the components contained in the sample solution,
a bottle housing consisting of a sample bottle, a buffer bottle, a distilled water bottle, and a standard solution bottle;
a compression pump motor for pumping any one of a sample solution, a buffer solution, distilled water, or a standard solution contained in each bottle of the bottle housing;
a metering cell for receiving a solution pumped by the compression pump motor and discharging a set amount of the solution;
a nitrogen purging cell for purging the solution of the quantity delivered from the quantitative measurement cell with nitrogen;
a main cell receiving the solution transferred from the nitrogen purging cell, forming a mercury electrode, and supplying a current to cause an oxidation-reduction chemical reaction to measure the voltage-current to measure the components contained in the sample solution;
A fifth switch valve between the bottle housing and the compression pump motor, the compression pump motor, a fourth switch valve between the compression pump motor and the metering cell, and a third switch valve between the metering cell and the nitrogen purging cell , SoC for controlling a first switch valve between the nitrogen purging cell and the main cell to control the solution to flow into the main cell;
A pretreatment device for making a sample solution by irradiating ultraviolet rays to wastewater or tap water to kill bacteria and remove organic matter;
a storage device storing trace element information measured by the main cell and current information for a specific voltage;
CCTV monitoring the operation of the trace element measurement device;
a serial communication unit configured to transmit the trace element data measured by the main cell to an external device; and
The device for measuring trace elements, characterized in that it further comprises a control button for transmitting the information collected from the storage device to the SoC or an external device, or requesting necessary information, and for setting the environment of the device for measuring trace elements. .
delete The method of claim 1,
a power supply for supplying power required for the microelement measurement device to operate; and
Trace element measuring device further comprising; a monitor for displaying the detection result of the main cell as a voltage-current characteristic graph.
4. The method of claim 3,
The SoC is
By rotating the second switch valve, the mercury in the mercury tank is introduced into the mercury injector, and the mercury injection motor is driven to inject the mercury from the lower part to the upper part in a syringe method so that the mercury is concentrated inside the main cell. Trace element measuring device, characterized in that forming the mercury electrode.
5. The method of claim 4,
The SoC is
After allowing the buffer solution and distilled water of the buffer bottle of the bottle housing or the distilled water bottle to flow into the main cell, and after emptying the buffer solution and distilled water, the standard solution from the standard solution bottle flows into the main cell, After emptying the standard solution, the sample solution in the sample bottle is introduced into the main cell to measure the heavy metal component of the sample solution.
In the method for measuring trace elements for measuring components contained in a sample solution,
(a) the trace element measurement is waiting for the trace element measurement;
(b) measuring the blank by allowing the SoC of the trace element measurement to be transferred to the main cell with a buffer solution or distilled water;
(c) measuring a component of a standard solution for setting a standard of a heavy metal component to be detected by causing the SoC to move the standard solution to the main cell;
(d) measuring the heavy metal contained in the sample solution by causing the SoC to move the sample solution to the main cell; and
(e) after the SoC confirms the automatic measurement step, and when automatic measurement is set, determining whether the sample solution measurement has been performed for a set number of times;
Step (d) is
(d-1) the SoC rotates the fifth valve switch and the fourth valve switch by a set angle to form a flow path leading to the sample bottle, the compression pump motor, and the metering cell;
(d-2) the SoC drives the compression pump motor to introduce the sample solution from the sample bottle into the quantitative metering cell;
(d-3) the SoC rotates the third valve switch by a set angle to form a flow path between the quantitative metering cell and the nitrogen purging cell, and then introducing a fixed amount of the sample solution into the nitrogen purging cell;
(d-4) the SoC rotates the first valve switch by a set angle to form a flow path between the nitrogen purging cell and the main cell, and then introducing the nitrogen-purged sample solution into the main cell;
(d-5) forming, by the SoC, a mercury electrode in the main cell; and
(d-6) the SoC applies a current to the mercury electrode and the platinum electrode formed as the main cell to cause an oxidation-reduction chemical reaction and measure the voltage by measuring the component contained in the sample solution; A method for measuring trace elements.
delete 7. The method of claim 6,
Steps (b) and (c) are
In step (d-1), the SoC rotates the fifth valve switch by a set angle to lead to a buffer bottle, a compression pump motor, and a metering cell, and a flow path leading to a distilled water bottle, a compression pump motor, and a metering cell. or, except for forming a flow path leading to the standard solution bottle, the compression pump motor, and the quantitative metering cell, performing steps (d-2) to (d-6) to measure the blank, A method for measuring trace elements, characterized in that the solution components are measured.
9. The method of claim 8,
The step (d-5) is
(d-5-1) the SoC rotates the second switch valve to introduce mercury from the mercury container into the mercury injector; and
(d-5-2) forming the mercury electrode by allowing the SoC to condense into the main cell through the mercury injector, which drives the mercury injection motor to inject the mercury from the bottom to the top in a syringe manner; A method for measuring trace elements, comprising:

Images