CN109855912A - A kind of quantitative testing device and detection method of heavy metal ion - Google Patents
A kind of quantitative testing device and detection method of heavy metal ion Download PDFInfo
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- CN109855912A CN109855912A CN201910055301.7A CN201910055301A CN109855912A CN 109855912 A CN109855912 A CN 109855912A CN 201910055301 A CN201910055301 A CN 201910055301A CN 109855912 A CN109855912 A CN 109855912A
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Abstract
The invention discloses a kind of quantitative testing device of heavy metal ion and detection methods, including bottom plate, quantitative case is fixedly connected at the top of the bottom plate, two sides at the top of the quantitative case are fixedly connected to link block, batch meter is fixedly connected between the top of two link blocks, two sides at the top of batch meter are fixedly connected to fixed block, shaft is rotatably connected between two fixed blocks, the both ends of shaft run through the side of fixed block and extend to the other side of fixed block, and the present invention relates to quantitative testing device technical fields.The quantitative testing device and detection method of the heavy metal ion, utilize piston up-down, and then liquid to be detected is pumped into batch meter, rise the first control switch of touching by kickboard and closes motor, then liquid stream to be detected is entered in inlet tube, rises the second control switch of touching using the first slide plate and closes solenoid valve, quantitative detection can be carried out to heavy metal ion, and test multiple groups are not needed, it is convenient to operate.
Description
Technical field
The present invention relates to quantitative testing device technical field, the quantitative testing device of specially a kind of heavy metal ion and inspection
Survey method.
Background technique
Heavy metal original meaning refers to the metal, including gold, silver, copper, iron, mercury, lead, cadmium etc. that specific gravity is greater than 5, and heavy metal is in human body
Middle accumulation reaches a certain level, and will cause slow poisoning.What is heavy metal to, unification still not stringent at present is fixed in fact
Justice, it is significant to be primarily referred to as the bio-toxicities such as mercury, cadmium, lead, chromium and metalloid arsenic for described heavy metal in terms of environmental pollution
Heavy element.Heavy metal is very difficult to be biodegradable, on the contrary but can under the biomagnification of the food chain, and thousands of hundred times of ground are rich
Collection, finally enters human body.Heavy metal in human body can and the strong interaction of the generations such as protein and enzyme, so that them is lost work
Property, it is also possible to it accumulates in some organs of the human body, causes slow poisoning.Metal ion is the metal that certain substance is dissolved in after water
The ion of element, is briefly exactly the metallic element in the substance of molecular composition, and most metal ions are cations.
Existing heavy metal ion detection device can not carry out quantitative detection, so well when being detected
Often because of the very few efficiency for reducing detection of quantity during detection, or because quantity excessively influences detection data
Accuracy, and need to test multiple groups and carry out referring to comparison, the process of operation is cumbersome.
Summary of the invention
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of quantitative testing device of heavy metal ion and detection sides
Method solves existing heavy metal ion detection device, can not carry out quantitative detection well when being detected, and
It needs to test multiple groups to carry out referring to comparison, the cumbersome problem of operating process.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of quantitative inspection of heavy metal ion
Device, including bottom plate are surveyed, is fixedly connected with quantitative case at the top of the bottom plate, the two sides at the top of the quantitative case are fixedly connected to
Link block is fixedly connected with batch meter between the top of two link blocks, and the two sides at the top of the batch meter are fixed to be connected
It is connected to fixed block, shaft is rotatably connected between two fixed blocks, the side of fixed block is run through at the both ends of the shaft
And the other side of fixed block is extended to, the both ends of two shafts are fixedly connected to U-shaped axis, the top and position of the bottom plate
It is fixedly connected to fixed case in the two sides of quantitative case, the side at the top of two fixed cases is fixedly connected to riser, and
The side of riser and one end of U-shaped axis are rotatablely connected, and the inner surface of the fixed case slidably connects piston, and the top of piston
It is fixedly connected with portable pillar, the top of the portable pillar is rotatably connected to thin bar, the outer surface on the top of the thin bar and U-shaped axis
Rotation connection, the side of the fixed case is communicated with liquid suction pipe, and one end of liquid suction pipe is connected to the side of batch meter, the meter
The two sides of measuring tank inner cavity top are fixedly connected to the first control switch, and the internal slide of the batch meter is connected with kickboard, institute
The inside for stating quantitative case is fixedly connected with transverse slat, and the bottom of the transverse slat is fixedly connected with demarcation plate, and the bottom of demarcation plate with
The bottom of metering box cavity is fixedly connected, and the two sides of the transverse slat bottom are fixedly connected to airtight pane, two airtight panes
The first slide plate is slidably connected between demarcation plate, the two sides of two airtight panes and quantitative chamber interior wall slidably connect
Second slide plate.
Preferably, the front and rear sides of the quantitative case are communicated with outlet tube, and there are four outlet tube settings, the transverse slat
Bottom and be located at the first slide plate right above be fixedly connected with the second control switch.
Preferably, the top of the bottom plate and it is located at the front and rear sides of quantitative case and is fixedly connected to detection case, and detects
There are four case settings, and the surface of the quantitative case is fixedly connected with liquid crystal display.
Preferably, the top of the batch meter and be located at shaft outer cover be equipped with stablize block, the top of the stable block
It is fixedly connected with motor, one end of the motor output shaft is fixedly connected with bull stick by shaft joint.
Preferably, the surface of the bull stick is fixedly connected with first gear, and the surface of the shaft is fixedly connected with second
Gear, the side of the second gear are engaged with the side of first gear.
Preferably, the inside of the transverse slat is communicated with inlet tube, and there are four inlet tube settings, the surface of the inlet tube
It is fixedly connected to solenoid valve.
Preferably, the bottom of the batch meter is communicated with connecting tube, and the bottom end of the connecting tube through quantitative case and extends
To the inside of quantitative case.
Preferably, the two sides of two fixed cases are communicated with mother tube.
The invention also discloses a kind of quantitative detecting methods of heavy metal ion, specifically includes the following steps:
Step 1: starting motor drives shaft rotation by shaft coupling, and then drives first gear rotation, first gear turns
It is dynamic then to rotate shaft to drive the second gear of engagement to rotate, and then drive U-shaped axis rotation；
Step 2: rotating using U-shaped axis and then thin bar being driven to move up and down, it is further driven to portable pillar rotation, thus band
Piston is slided up and down in the inside of fixed case, then will contain the to be detected of heavy metal ion by mother tube using atmospheric pressure
Liquid is extracted into fixed case, and the liquid to be detected containing heavy metal ion is extracted into batch meter by liquid suction pipe when piston moves downward
It is interior；
Step 3: the liquid to be detected containing heavy metal ion being extracted into batch meter can be such that kickboard rises, reaches and set
Volume after, kickboard touches the first control switch, and motor stops working, and opens the electric control valve in connecting tube at this time, contains weight
The liquid to be detected of metal ion is entered in quantitative case by connecting tube；
Step 4: the liquid to be detected containing heavy metal ion can be flowed by four inlet tubes, and then drive the second slide plate
It moves downward, thus make the first slide plate upward sliding, after the liquid to be detected containing heavy metal ion has reached the volume of setting,
First slide plate touches the second control switch, and corresponding solenoid valve is closed, and finally the liquid to be detected containing heavy metal ion is uniform
Four inlet tubes of inflow in；
Step 5: opening the electric control valve of outlet tube in quantitative case, and then make the liquid stream to be detected containing heavy metal ion
Enter in detection case and detected, the result finally detected is presented by liquid crystal display.
(3) beneficial effect
The present invention provides a kind of quantitative testing device of heavy metal ion and detection methods.Compared with prior art, have
It is standby following the utility model has the advantages that
(1), the quantitative testing device and detection method of the heavy metal ion, it is quantitative by being fixedly connected at the top of bottom plate
Case, the two sides at the top of quantitative case are fixedly connected to link block, batch meter are fixedly connected between the top of two link blocks, count
Two sides at the top of measuring tank are fixedly connected to fixed block, and shaft is rotatably connected between two fixed blocks, and the both ends of shaft are passed through
It wears the side of fixed block and extends to the other side of fixed block, the both ends of two shafts are fixedly connected to U-shaped axis, the top of bottom plate
Portion and be located at quantitative case two sides be fixedly connected to fixed case, the side at the top of two fixed cases is fixedly connected to riser,
And the side of riser and one end of U-shaped axis are rotatablely connected, the inner surface of fixed case slidably connects piston, and the top of piston is solid
Surely it is connected with portable pillar, the top of portable pillar is rotatably connected to thin bar, and the top of thin bar and the outer surface of U-shaped axis are rotatablely connected,
The side of fixed case is communicated with liquid suction pipe, and one end of liquid suction pipe is connected to the side of batch meter, and the two of batch meter inner cavity top
Side is fixedly connected to the first control switch, and the internal slide of batch meter is connected with kickboard, and the inside of quantitative case is fixedly connected with
Transverse slat, the bottom of transverse slat is fixedly connected with demarcation plate, and the bottom of demarcation plate is fixedly connected with the bottom of metering box cavity, transverse slat
The two sides of bottom are fixedly connected to airtight pane, and two slidably connect the first slide plate between airtight pane and demarcation plate, and two
The two sides of airtight pane and quantitative chamber interior wall slidably connect the second slide plate, and the inside of transverse slat is communicated with inlet tube, and inlet tube
There are four settings, and the surface of inlet tube is fixedly connected to solenoid valve, is pumped into using piston up-down, and then by liquid to be detected
In batch meter, the first control switch of touching is risen by kickboard and closes motor, then liquid stream to be detected is entered in inlet tube, is utilized
First slide plate rises the second control switch of touching and closes solenoid valve, can carry out quantitative detection to heavy metal ion, and be not required to
Multiple groups are tested, it is convenient to operate.
(2), the quantitative testing device and detection method of the heavy metal ion, by being connected in the front and rear sides of quantitative case
There is an outlet tube, and there are four outlet tube settings, the top of the bottom plate and front and rear sides for being located at quantitative case are fixedly connected to detection
Case, and there are four detection case settings, the surface of quantitative case is fixedly connected with liquid crystal display, will by the cooperation of above structure
Fixed measured liquid to be detected flows into detection case by outlet tube, and will test the testing result in case and be in by liquid crystal display
It is existing, it can intuitively observe testing result.
Detailed description of the invention
Fig. 1 is the main view of external structure of the present invention；
Fig. 2 is the main view of internal structure of the present invention；
Fig. 3 is the main view of partial structurtes of the present invention；
Fig. 4 is the side view of external structure of the present invention.
In figure, 1- bottom plate, 2- quantitative case, 3- link block, 4- batch meter, 5- fixed block, 6- shaft, 7-U profile shaft, 8- are fixed
Case, 9- riser, 10- piston, 11- portable pillar, 12- thin bar, 13- liquid suction pipe, the first control switch of 14-, 15- kickboard, 16- are horizontal
Plate, 17- demarcation plate, 18- airtight pane, the first slide plate of 19-, the second slide plate of 20-, 21- outlet tube, the second control switch of 22-, 23-
Detection case, 24- liquid crystal display, 25- stablize block, 26- motor, 27- bull stick, 28- first gear, 29- second gear, 30- into
Liquid pipe, 31- solenoid valve, 32- connecting tube, 33- mother tube.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-4 is please referred to, the embodiment of the present invention provides a kind of technical solution: a kind of quantitative detection dress of heavy metal ion
Set, including bottom plate 1, the top of bottom plate 1 and be located at quantitative case 2 front and rear sides be fixedly connected to detection case 23, detection case 23
It is inside provided with detector to detect liquid to be detected, and is electrically connected with liquid crystal display 24, and detection case 23 is provided with four
A, the surface of quantitative case 2 is fixedly connected with liquid crystal display 24, is fixedly connected with quantitative case 2 at the top of bottom plate 1, before quantitative case 2
Two sides are communicated with outlet tube 21 afterwards, electric control valve are provided on outlet tube 21, and there are four the settings of outlet tube 21, transverse slat 16
Bottom and the surface for being located at the first slide plate 19 are fixedly connected with the second control switch 22, the second control switch 22 and solenoid valve 31
It is electrically connected, the two sides at 2 top of quantitative case are fixedly connected to link block 3, are fixedly connected between the top of two link blocks 3
Batch meter 4, the bottom of batch meter 4 are communicated with connecting tube 32, and electric control valve is provided in connecting tube 32, and the bottom end of connecting tube 32 is passed through
Wear quantitative case 2 and extend to the inside of quantitative case 2, the top of batch meter 4 and be located at shaft 6 outer cover be equipped with stablize block 25,
The top for stablizing block 25 is fixedly connected with motor 26, and motor 26 and the first control switch 14 are electrically connected, 26 output shaft of motor
One end is fixedly connected with bull stick 27 by shaft joint, and the surface of bull stick 27 is fixedly connected with first gear 28, and the surface of shaft 6 is solid
Surely it is connected with second gear 29, the side of second gear 29 is engaged with the side of first gear 28, and the two sides at 4 top of batch meter are equal
It is fixedly connected with fixed block 5, shaft 6 is rotatably connected between two fixed blocks 5, the one of fixed block 5 is run through at the both ends of shaft 6
Side and the other side for extending to fixed block 5, the both ends of two shafts 6 are fixedly connected to U-shaped axis 7, the top of bottom plate 1 and are located at
The two sides of quantitative case 2 are fixedly connected to fixed case 8, and the two sides of two fixed cases 8 are communicated with mother tube 33, and mother tube 33 is set
It is equipped with one-way cock, mother tube 33 is connected to liquid to be detected, and the side at two 8 tops of fixed case is fixedly connected to riser 9, and
One end of the side of riser 9 and U-shaped axis 7 is rotatablely connected, and the inner surface of fixed case 8 slidably connects piston 10, and piston 10
Top is fixedly connected with portable pillar 11, and the top of portable pillar 11 is rotatably connected to thin bar 12, the top of thin bar 12 and U-shaped axis 7
Outer surface rotation connection, the side of fixed case 8 are communicated with liquid suction pipe 13, and liquid suction pipe 13 is provided with one-way cock, and liquid suction pipe 13
One end be connected to the side of batch meter 4, the two sides of 4 inner cavity top of batch meter are fixedly connected to the first control switch 14, meter
The internal slide of measuring tank 4 is connected with kickboard 15, and multiple apertures are offered in kickboard 15, and the inside of quantitative case 2 is fixedly connected with cross
Plate 16, the inside of transverse slat 16 are communicated with inlet tube 30, and there are four the settings of inlet tube 30, the surface of inlet tube 30 is fixedly connected with
There is solenoid valve 31, the bottom of transverse slat 16 is fixedly connected with demarcation plate 17, and the bottom of the bottom of demarcation plate 17 and 4 inner cavity of batch meter
It is fixedly connected, the two sides of 16 bottom of transverse slat are fixedly connected to airtight pane 18, sliding between two airtight panes 18 and demarcation plate 17
Dynamic to be connected with the first slide plate 19, the two sides of two airtight panes 18 and 2 inner wall of quantitative case slidably connect the second slide plate 20, utilize
Piston 10 moves up and down, and then liquid to be detected is pumped into batch meter 4, rises the first control switch 14 of touching by kickboard 15 and closes
Motor 26 is closed, then enters liquid stream to be detected in inlet tube 30, rises the second control switch 22 of touching using the first slide plate 19 and closes
Solenoid valve 31 is closed, quantitative detection can be carried out to heavy metal ion, and do not need test multiple groups, it is convenient to operate.
The invention also discloses the quantitative detecting methods of heavy metal ion, specifically includes the following steps:
Step 1: starting motor 26 drives shaft 27 to rotate by shaft coupling, and then drives first gear 28 to rotate, first
Then the rotation of gear 28 rotates shaft 6 to drive the second gear 29 of engagement to rotate, and then U-shaped axis 7 is driven to rotate；
Step 2: rotating using U-shaped axis 7 and then thin bar 12 being driven to move up and down, it is further driven to the rotation of portable pillar 11, from
And slided up and down with piston 10 in the inside of fixed case 8, then using atmospheric pressure by mother tube 33 will containing heavy metal from
The liquid to be detected of son is extracted into fixed case 8, and the liquid to be detected containing heavy metal ion is passed through drawing liquid when piston 10 moves downward
Pipe 13 is extracted into batch meter 4；
Step 3: the liquid to be detected containing heavy metal ion being extracted into batch meter 4 can be such that kickboard 15 rises, reach setting
After good volume, kickboard 15 touches the first control switch 14, and motor 26 stops working, and opens the electrically-controlled valve in connecting tube 32 at this time
Door, the liquid to be detected containing heavy metal ion are entered in quantitative case 2 by connecting tube 32；
Step 4: the liquid to be detected containing heavy metal ion can be flowed by four inlet tubes 30, and then second is driven to slide
Plate 20 moves downward, to make 19 upward sliding of the first slide plate, when the liquid to be detected containing heavy metal ion has reached setting
After volume, the first slide plate 19 touches the second control switch 22, and corresponding solenoid valve 31 is closed, finally containing heavy metal ion
Liquid to be detected uniformly flows into four inlet tubes 30；
Step 5: opening the electric control valve of outlet tube 21 in quantitative case 2, and then make the liquid to be detected containing heavy metal ion
It flows into detection case 23 and is detected, the result finally detected is presented by liquid crystal display 24.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of quantitative testing device of heavy metal ion, including bottom plate (1), bottom plate (1) top is fixedly connected with quantitative
Case (2), the two sides at the top of the quantitative case (2) are fixedly connected to link block (3), the tops of two link blocks (3) it
Between be fixedly connected with batch meter (4), it is characterised in that: the two sides at the top of the batch meter (4) are fixedly connected to fixed block
(5), it is rotatably connected to shaft (6) between two fixed blocks (5), fixed block (5) is run through at the both ends of the shaft (6)
The both ends of side and the other side for extending to fixed block (5), two shafts (6) are fixedly connected to U-shaped axis (7), described
The top of bottom plate (1) and the two sides for being located at quantitative case (2) are fixedly connected to fixed case (8), at the top of two fixed cases (8)
Side be fixedly connected to riser (9), and one end of the side of riser (9) and U-shaped axis (7) is rotatablely connected, the fixed case
(8) inner surface slidably connects piston (10), and portable pillar (11), the portable pillar are fixedly connected at the top of piston (10)
(11) top is rotatably connected to thin bar (12), and the top of the thin bar (12) and the outer surface of U-shaped axis (7) are rotatablely connected, institute
The side for stating fixed case (8) is communicated with liquid suction pipe (13), and one end of liquid suction pipe (13) is connected to the side of batch meter (4), institute
The two sides for stating batch meter (4) inner cavity top are fixedly connected to the first control switch (14), the internal slide of the batch meter (4)
It is connected with kickboard (15), the inside of the quantitative case (2) is fixedly connected with transverse slat (16), and the bottom of the transverse slat (16) is fixed to be connected
It is connected to demarcation plate (17), and the bottom of demarcation plate (17) is fixedly connected with the bottom of batch meter (4) inner cavity, transverse slat (16) bottom
The two sides in portion are fixedly connected to airtight pane (18), are slidably connected between two airtight panes (18) and demarcation plate (17)
The two sides of the first slide plate (19), two airtight panes (18) and quantitative case (2) inner wall slidably connect the second slide plate (20).
2. a kind of quantitative testing device of heavy metal ion according to claim 1, it is characterised in that: the quantitative case
(2) front and rear sides are communicated with outlet tube (21), and there are four outlet tube (21) settings, the bottom and position of the transverse slat (16)
The second control switch (22) are fixedly connected with right above the first slide plate (19).
3. a kind of quantitative testing device of heavy metal ion according to claim 1, it is characterised in that: the bottom plate (1)
Top and be located at quantitative case (2) front and rear sides be fixedly connected to detection case (23), and detection case (23) setting there are four,
The surface of the quantitative case (2) is fixedly connected with liquid crystal display (24).
4. a kind of quantitative testing device of heavy metal ion according to claim 1, it is characterised in that: the batch meter
(4) top and the outer cover for being located at shaft (6), which are equipped with, to be stablized block (25), is fixedly connected with electricity at the top of the stable block (25)
One end of machine (26), motor (26) output shaft is fixedly connected with bull stick (27) by shaft joint.
5. a kind of quantitative testing device of heavy metal ion according to claim 4, it is characterised in that: the bull stick (27)
Surface be fixedly connected with first gear (28), the surface of the shaft (6) is fixedly connected with second gear (29), described second
It is engaged with the side of first gear (28) side of gear (29).
6. a kind of quantitative testing device of heavy metal ion according to claim 1, it is characterised in that: the transverse slat (16)
Inside be communicated with inlet tube (30), and inlet tube (30) setting there are four, the surface of the inlet tube (30) is fixedly connected with
There are solenoid valve (31).
7. a kind of quantitative testing device of heavy metal ion according to claim 1, it is characterised in that: the batch meter
(4) bottom is communicated with connecting tube (32), and the bottom end of the connecting tube (32) through quantitative case (2) and extends to quantitative case (2)
Inside.
8. a kind of quantitative testing device of heavy metal ion according to claim 1, it is characterised in that: two fixations
The two sides of case (8) are communicated with mother tube (33).
9. a kind of quantitative testing device of heavy metal ion described in any one of -8 according to claim 1, it is characterised in that:
Its detection method specifically includes the following steps:
Step 1: starting motor (26) drives shaft (27) rotation by shaft coupling, and then drives first gear (28) rotation, the
Then one gear (28) rotation rotates shaft (6) to drive the second gear (29) of engagement to rotate, and then drive U-shaped axis
(7) it rotates；
Step 2: rotating using U-shaped axis (7) and then thin bar (12) being driven to move up and down, it is further driven to portable pillar (11) rotation,
To be slided up and down with piston (10) in the inside of fixed case (8), then will be contained using atmospheric pressure by mother tube (33)
The liquid to be detected of heavy metal ion is extracted into fixed case (8), and piston (10) will be containing the to be checked of heavy metal ion when moving downward
Liquid is surveyed to be extracted into batch meter (4) by liquid suction pipe (13)；
Step 3: the liquid to be detected containing heavy metal ion being extracted into batch meter (4) can be such that kickboard (15) rise, reach setting
After good volume, kickboard (15) touches the first control switch (14), and motor (26) stops working, and opens on connecting tube (32) at this time
Electric control valve, the liquid to be detected containing heavy metal ion by connecting tube (32) enter quantitative case (2) in；
Step 4: the liquid to be detected containing heavy metal ion can be flowed by four inlet tubes (30), and then drive the second slide plate
(20) it moves downward, to make the first slide plate (19) upward sliding, when the liquid to be detected containing heavy metal ion has reached setting
Volume after, the first slide plate (19) touches the second control switch (22), and corresponding solenoid valve (31) is closed, finally containing a huge sum of money
The liquid to be detected for belonging to ion uniformly flows into four inlet tubes (30)；
Step 5: opening the electric control valve of outlet tube (21) on quantitative case (2), and then make the liquid to be detected containing heavy metal ion
It flows into detection case (23) and is detected, the result finally detected is presented by liquid crystal display (24).
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| CN201910055301.7A CN109855912B (en) | 2019-01-21 | 2019-01-21 | Quantitative detection device and detection method for heavy metal ions |
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| CN201910055301.7A CN109855912B (en) | 2019-01-21 | 2019-01-21 | Quantitative detection device and detection method for heavy metal ions |
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| CN112353013A (en) * | 2020-12-09 | 2021-02-12 | 湖南震宇天然生物科技有限责任公司 | Oiling device for manufacturing electronic cigarette |
| CN113311113A (en) * | 2021-05-26 | 2021-08-27 | 杭州广泰环保技术有限公司 | NMP product metal ion content determination system and analysis method thereof |
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