CN206710365U - A kind of portable soil heavy metal detection means - Google Patents
A kind of portable soil heavy metal detection means Download PDFInfo
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- CN206710365U CN206710365U CN201720376844.5U CN201720376844U CN206710365U CN 206710365 U CN206710365 U CN 206710365U CN 201720376844 U CN201720376844 U CN 201720376844U CN 206710365 U CN206710365 U CN 206710365U
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Abstract
The utility model provides a kind of portable soil heavy metal detection means, and it includes：For the heavy metal concentration to be measured in heavy metal-polluted soil prepare liquid to be converted into the glass microelectrode array of raw electrical signal, the glass microelectrode array includes a reference electrode and at least one working electrode, and the Cd of the liquid of 15 μm of 50 μm of length is filled in the working electrode2+Ion selects the Pb of the liquid of exchanger or 15 μm of 50 μm of length2+Ion selects exchanger；The adapting amplifier device being connected with the glass microelectrode array, the adapting amplifier device are used to amplify the raw electrical signal to obtain strengthening electric signal；The signal conditioning circuit being connected with the adapting amplifier device, the signal conditioning circuit are used to the enhancing electric signal carrying out noise reduction process to obtain effective electric signal；The data processing equipment being connected with the signal conditioning circuit, the data processing equipment are used to change and handle effective electric signal.The utility model can effectively improve the accuracy of data acquisition and analysis.
Description
Technical field
Heavy metal-polluted soil detection means is the utility model is related to, is examined more particularly, to a kind of portable soil heavy metal
Survey device.
Background technology
Heavy metal pollution of soil refers to that content of the minor metallic element in soil in soil exceedes background value, excessive heavy
Too high levels caused by product, food security can be ultimately resulted in.Heavy metal pollution is by food chain approach in plant, animal and people
Cylinder accumulation, serious threat is all formed to ecological environment, food security and health.Therefore, strengthen to agricultural land soil weight
The monitoring and control of metal, it is significant for effective prevention and control heavy metal pollution.
The content of beary metal in soil is detected at present, needs to use in laboratory more, such as flame spectrometry
Or atomic absorption spectrophotometer etc., it is relatively time-consuming laborious, and cost is high, can not accomplish quick, real-time dynamic monitoring.To carry
The high quick detection to heavy metal in soil content, recently, a collection of heavy metal based on spectral detection principle has been emerged in large numbers both at home and abroad
Detection device.For example, Japan science Co., Ltd. and the Checkboy of environmental resource system comprehensive study institute cooperative research and development
SOIL type analysis instrument, the ST-4000 Portable heavy metal detectors that Shanghai SINTEK companies develop.For another example Application No.
201410816225.4 Chinese patent application, there is provided a kind of heavy metal-polluted soil detection method and device based on X ray and
System；The Chinese patent application of Application No. 201410245001.2, disclose a kind of heavy metal-polluted soil based on pressed disc method and contain
The detection method and device of amount, general principle are to be based on terahertz light spectral technology.
Above-mentioned detection device can carry out accurate analysis to heavy metal-polluted soil, still, time-consuming for it, complex operation,
Cost is high, and the characteristic of sample can directly affect the stability of measurement, and can not meet the heavy metal-polluted soil under the site environment of field
The demand of quick detection.Therefore, the features such as electrochemical measuring technique is due to its fast response time, high sensitivity, gradually in material
The analysis detection field of content is applied, and such as Application No. CN201511021464.1 Chinese patent application, passes through urase
Biology sensor obtains in substrate caused current signal so as to being detected；Application No. CN201210542944.2 China
Patent application, a kind of Portable rapid detector for soil heavy metal based on ion selective membrane technology is disclosed, it is used
Solid ionic selective membrane is as sensing detection unit.
But detected using electrochemical measuring technique, during from solid ionic electrodes selective its soak time compared with
It is long, influence detection efficiency, and the content of beary metal in soil extracted by digestion agent after in the obtained aqueous solution, its content of beary metal
Less, the electric signal obtained after inverted is fainter, and can supervene some interference signals, can influence to a huge sum of money in soil
Belong to the accurate analysis of content.
Utility model content
The utility model provides a kind of portable soil for overcoming above mentioned problem or solving the above problems at least in part
Heavy metal analysis device, to solve the problems, such as that interference signal influences Analysis of Heavy Metal accuracy.
According to one side of the present utility model, there is provided a kind of portable soil heavy metal detection means, it includes：
For the heavy metal concentration to be measured in heavy metal-polluted soil prepare liquid to be converted into the glass microelectrode of raw electrical signal
Array, the glass microelectrode array include a reference electrode and at least one working electrode, filled in the working electrode
The Cd of the liquid of 15 μm of -50 μm of length2+Ion selects the Pb of the liquid of exchanger or 15 μm of -50 μm of length2+Ion selection exchanges
Agent；
The adapting amplifier device being connected with the glass microelectrode array, the adapting amplifier device are used to amplify the original
Beginning electric signal with obtain strengthen electric signal；
The signal conditioning circuit being connected with the adapting amplifier device, the signal conditioning circuit are used for the enhancing electricity
Signal carries out noise reduction process to obtain effective electric signal；
The data processing equipment being connected with the signal conditioning circuit, the data processing equipment are used to change and handle institute
State effective electric signal.
Further, the glass microelectrode array is connected with the adapting amplifier device by way of grafting.
Further, in addition to：The power supply of supply of electrical energy, the power supply use the battery of low ripple.
Further, the signal conditioning circuit includes for the voltage follower circuit of stabilization signal and for filtering out noise
Filter capacitor.
Further, the data processing equipment includes capture card and microprocessor, and the capture card gathers with 16 tunnels
Passage, and the collection digit of the capture card is 16.
Further, in addition to：It is connected with the data processing equipment and the moisture for detecting soil moisture senses
Device.
Further, in addition to：It is connected with the data processing equipment and for the temperature sensor of monitoring of environmental temperature.
Further, in addition to：It is connected with the data processing equipment and for positioning and recording sampling location information
GPS。
The beneficial effects of the utility model are mainly as follows：
(1) the glass microelectrode array that using filling has the ion selection exchanger of liquid corresponds to heavy metal-polluted soil to obtain
The raw electrical signal of content, and after being amplified processing to raw electrical signal by adapting amplifier device, by signal conditioning circuit
Noise reduction process is carried out to the enhancing electric signal after amplification, the raw electrical signal obtained by glass microelectrode array can not only be improved
Intensity, additionally it is possible to effectively reduce the influence of interference signal, improve the accuracy of analysis detection；
(2) cell powers of low ripple are used, the intensity of interference signal caused by reduction, further reduce interference letter
Number influence；
(3) glass microelectrode array and adapting amplifier device are by the way of being directly connected to, when avoiding using wire connection
Caused interference signal, further reduce the influence of interference signal；
(4) data processing equipment has been also respectively connected with moisture transducer, temperature sensor and GPS, is easy to in soil
Content of beary metal carries out comprehensive analysis.
Brief description of the drawings
Fig. 1 is the structural representation according to a kind of portable soil heavy metal detection means of the utility model embodiment；
Fig. 2 is the glass microelectrode battle array according to a kind of portable soil heavy metal detection means of the utility model embodiment
The structural representation of row；
Fig. 3 is the adapting amplifier device according to a kind of portable soil heavy metal detection means of the utility model embodiment
Electrical block diagram；
Fig. 4 is the signal conditioning circuit according to a kind of portable soil heavy metal detection means of the utility model embodiment
Electrical block diagram.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not limited to the scope of the utility model.
It is shown in Figure 1, a kind of portable soil heavy metal detection means, including：Glass microelectrode array 1, preceding storing
Big device 2, signal conditioning circuit 3 and data processing equipment 7.Glass microelectrode array 1 is used to detect heavy metal-polluted soil prepare liquid
In ion concentration to be measured, and the ion concentration to be measured is converted into raw electrical signal, for Data Management Analysis.
For ease of analyzing the content of beary metal in soil, the pedotheque of targeted test field arable layer is first gathered,
Pedotheque is derived from arable layer subterranean depth for the soil at 15cm-25cm.The pedotheque of collection passes through after natural air drying
Grind sieving processing.Then the pedotheque for reaching fineness requirement uses deionized water or 0.1molL-1CaCl2Solution extracts,
Pedotheque and deionized water/CaCl2The mass ratio of solution is 1:10, for example, adding 50ml deionizations in 5g pedotheques
Water is extracted.
Add deionized water after, fully vibration mix, make soil heavy metal entered with soluble ion state it is water-soluble
In liquid, then filtered, heavy metal-polluted soil prepare liquid clarified, containing heavy metal in soil.Heavy metal-polluted soil is treated
Survey liquid to be placed in detection container, glass microelectrode array 1 is immersed in heavy metal-polluted soil prepare liquid, detection heavy metal-polluted soil is treated
The content of beary metal concentration surveyed in liquid.
Shown in Figure 2, glass microelectrode array 1 includes a reference electrode 11 and at least one working electrode 12,
Filling has Cd of the liquid ion exchanger species for 15 μm of -50 μm of length in working electrode 122+Ion select exchanger or 15 μm-
The Pb of 50 μm of length2+Ion selects exchanger.It is understood that according to the species that need to test heavy metal, can select correspondingly
Ion selection exchanger species.
Shown in Figure 1, glass microelectrode array 1 is connected with adapting amplifier device 2.Glass microelectrode array 1 will obtain
Content of beary metal concentration information be converted to raw electrical signal, and the raw electrical signal is exported, is sent to adapting amplifier device
2.Because the concentration of the content of beary metal in soil is smaller, it is to compare that glass microelectrode array 1, which detects obtained raw electrical signal,
Faint, the signal in itself circuit of itself and device, which produces, to be obscured and is difficult to differentiate between, therefore, by setting adapting amplifier device 2,
The raw electrical signal that glass microelectrode array 1 exports is amplified processing before interference electric signal introduces, to strengthen the original
The intensity of beginning electric signal, the influence of interference signal is reduced, be easy to the analyzing and processing in later stage.
Adapting amplifier device 2 is connected with signal conditioning circuit 3.Via the enhancing electricity after the enhanced processing of adapting amplifier device 2
Signal, input to signal conditioning circuit 3.Signal conditioning circuit 3 is reduced by the way of filtering with enhancing electric signal input
The intensity of interference signal, to reduce adverse effect of the interference signal to enhancing electric signal.
Signal conditioning circuit 3 is connected with data processing equipment 7.Effective electricity after the noise reduction process of signal conditioning circuit 3
Signal is inputted to data processing equipment 7, and effective electric signal is converted to data signal by data processing equipment 7, and is analyzed
Processing, to obtain the content of heavy metal in heavy metal-polluted soil prepare liquid.
The raw electrical signal on content of beary metal information obtained by glass microelectrode array 1, amplified, noise reduction process
Afterwards, the degree of accuracy of identification and processing of the data processing equipment 7 to effective electric signal can effectively be improved.
Shown in Figure 2, the glass microelectrode array 1 for obtaining raw electrical signal includes a reference electrode 11 and extremely
A few working electrode 12.Working electrode 12 is ion selectivity working electrode, and multiple working electrodes 12 have identical structure,
Specifically, working electrode 12 includes being used for the glass electrode for filling reagent, and the reagent filled in glass electrode is that liquid ion selects
Exchanger and electrolyte are selected, wherein, liquid ion selects exchanger close to the lower port of glass electrode, and electrolyte selects with ion
Select exchanger contact but do not fuse mutually.
The liquid ion exchanger species of filling is the Cd of 15 μm of -50 μm of length in working electrode 122+Ion selection is handed over
Change the Pb of agent or 15 μm of -50 μm of length2+Ion selects exchanger.Wherein, Cd2+Ion selection exchanger source for：Sigma-
Aldrich,Louis,MO 20909,USA；Pb2+Ion selection exchanger source for：XY-SJ-Pb, Xuyue (Beijing)
Sci.&Tech.Co.,Ltd.Beijing,100080,P.R.China)。
The electrolyte of filling is 10mmolL in working electrode 12-1The caddy aqueous solution and 0.1mmolL-1Chlorination
Mixed aqueous solution, the 1mmolL of aqueous solutions of potassium-1The plumbi nitras aqueous solution.The length of the electrolyte of filling is in working electrode 12
8mm-12mm。
Specifically, when the ion selection exchanger of filling in working electrode 12 is Cd2+When ion selects exchanger, accordingly
, the electrolyte of filling is 10mmolL in the working electrode 12-1The caddy aqueous solution and 0.1mmolL-1Potassium chloride is water-soluble
The mixed aqueous solution of liquid.The working electrode 12 is used to detect the cadmium content in pedotheque.
When the ion selection exchanger of filling in working electrode 12 is Pb2+When ion selects exchanger, accordingly, the work
The electrolyte of filling is 1mmolL in electrode 12-1The plumbi nitras aqueous solution.The working electrode 12 is used to detect in pedotheque
Lead content.
The Ag/AgCl electrodes that the glass electrode that filling has corresponding ion selection exchanger and electrolyte is installed to chlorination are consolidated
Determine on frame, and the filamentary silver front end of Ag/AgCl electrodes is immersed in glass electrode, and electrolyte contacts in glass electrode, with
Form working electrode 12.Shown in Figure 2, glass microelectrode array 1 includes a reference electrode 11 and more working electrodes 12,
Reference electrode 11 and working electrode 12 are plugged on electrode tip holder 13.Reference electrode 11 is surrounded on it in centre, working electrode 12
Around, and be all plugged in by way of plug on electrode tip holder 13.
Electrode protection net 14 and electrode hood 15 are disposed with from the inside to the outside in the periphery of working electrode 12.Electrode protection net
14 and electrode hood 15 be one end open structure, one end of electrode protection net 14 and electrode hood 15 is mounted at electricity
In electrode seat 13, and the length of electrode protection net 14 and electrode hood 15 is more than the length of reference electrode 11 and working electrode 12.In addition,
Handle 16 is additionally provided with electrode tip holder 13.
Electrode protection net 14 is the cage structure for having mesh, neither influences detected solution by again can be with guard electrode
It is not easy disconnected by external force stamp；Electrode hood 15 is the tubular structure of ABS materials, is mainly shielded when electrode is deposited.
Glass microelectrode array 1 in the correcting fluid of its electrode head immersion concentration known before use, will first be corrected.
Specifically, the electrode head of glass microelectrode array 1 is immersed in correcting fluid, reads the current potential of each electrode, and this is special according to energy
Equation, the slope and intercept of each electrode are calculated automatically from by data processing equipment 7.When the slope being calculated is ± 58 ± 5
When (cation for just, anion is negative), show that glass microelectrode array 1 is working properly, can be used in detecting.
In a specific embodiment, to the glass microelectrode array 1 for detecting content of beary metal in pedotheque
The correction data of a working electrode 12 be shown in Table 1, wherein, correcting fluid 1 is 0.1mmolL-1CdCl2, correcting fluid 2 is
1mmol·L-1CdCl2。
The correction parameter of table 1
By the influence of external environment in caused interference signal, the interference ratio of electromagnetic wave in power supply disturbance ripple and environment
It is more serious.Interference signal can make it that the voltage pulsation that collects is larger, causes signal accuracy poor, and then cause the concentration of parsing
Error is very big.
Because the electromagnetic wave in environment can enter adapting amplifier device by wire, to disturb final data analyzing and processing
Accuracy, therefore, to reduce the influence of interference signal, using directly slotting between glass microelectrode array 1 and adapting amplifier device 2
The mode connect, to avoid the interference of electromagnetic wave in environment introduced during using wire connection.
Further to reduce the interference to raw electrical signal, to provide the battery that the power supply of electric energy uses low ripple.Electricity
Source is connected with adapting amplifier device 2, signal conditioning circuit 3 and data processing equipment 7 respectively, to provide electric energy.Using low ripple
Battery electric energy is provided, make the reduction of device subsidiary interference ripple maximum intensity limit in itself, to reduce to raw electrical signal
The adverse effect analyzed and processed.Meanwhile power supply is supplied by battery, it is easy to carry, so as to field work.
Before the raw electrical signal that signal conditioning circuit 3 obtains to glass microelectrode array 1 carries out noise reduction process, also enter
One step uses the battery powered of low ripple, and/or the mode that glass microelectrode array 1 is directly connected to adapting amplifier device 2, makes
Obtain in raw electrical signal acquisition process, that is, the introducing for reducing interference signal is first passed through, to effectively reduce the kind of interference signal
Class and/or intensity, to improve identification and the precision of analysis to raw electrical signal.
Because the content of beary metal in heavy metal-polluted soil prepare liquid is relatively low, the original electricity through the acquisition of glass microelectrode array 1
Signal intensity is weaker, for ease of the identification and extraction to raw electrical signal, and is easy to believe with caused interference in detection process
Number effectively distinguished, the raw electrical signal obtained using adapting amplifier device 2 to glass microelectrode array 1 is amplified place
Reason.Shown in Figure 3, adapting amplifier device 2 is mainly made up of pre-amplification circuit.Adapting amplifier device 2 includes operation amplifier
Device and peripheral amplifying circuit, peripheral amplifying circuit are connected on operational amplifier, also, operational amplifier and peripheral amplifying circuit
It may be contained within circuit board.
Glass microelectrode array 1 is plugged on adapting amplifier device 2, the signal output part and signal of adapting amplifier device 2
Modulate circuit 3 is connected by contact pin.Glass microelectrode array 1 inputs the raw electrical signal of acquisition to operational amplifier, with reality
Now amplify the purpose of raw electrical signal.The enhancing electric signal input signal conditioning circuit 3 obtained after amplified processing, to be dropped
Make an uproar processing.
In a specific embodiment, the purpose of amplified signal is realized using model AD549 operational amplifier.
AD549 is extremely low bias current operational amplifier, and input stage has 1015Ω common code impedance.
It is further using signal conditioning circuit 3 to the raw electrical signal of acquisition on the basis of introducing interference signal is reduced
Noise reduction process is carried out, reduces adverse effect of the interference signal to raw electrical signal.It is shown in Figure 4, specifically, signal condition electricity
Road 3 uses voltage follower circuit stabilization signal, and noise is filtered out using filter capacitor.
In a specific embodiment, adapting amplifier device 2 and signal conditioning circuit 3 may be contained within glass microelectrode battle array
In the electrode tip holder 13 of row 1, reference electrode 11 and working electrode 12 and 2 direct grafting of adapting amplifier device, adapting amplifier device 2 with
Signal conditioning circuit 3 is joined directly together by contact pin.
Shown in Figure 1, the effective electric signal obtained after the noise reduction process of signal conditioning circuit 3 is inputted to data processing and filled
7 are put, data processing equipment 7 includes capture card and microprocessor.
Capture card has 16 road acquisition channels, can realize the synchronous high-accuracy data acquisition of multichannel, it is simultaneously right to be easy to
The content data of various heavy in heavy metal-polluted soil prepare liquid gather simultaneously.Specifically, the collection digit of capture card
For 16.Meanwhile capture card collects effective electric signal of the concentration information of various heavy in heavy metal-polluted soil prepare liquid,
And by the A/D translation functions of capture card, effective electric signal is converted into effective digital signal.
Capture card inputs the data signal being converted to by A/D to microprocessor, and microprocessor receives numeral letter
Number.The software installed in microprocessor using 7 filter method combination average value algorithm, foundation Nernst equation E=K ±
SlgC, wherein E are current potential, and K is intercept, and S is slope, and the data signal is handled, i.e., electrical potential information is converted into difference
The concentration information of content of beary metal.
For the content situation of more intuitively monitoring heavy metal in soil, the moisture for detecting soil moisture is additionally provided with
Sensor 4, moisture transducer 4 are connected with data processing equipment 7.When carrying out detection soil moisture, directly moisture is sensed
Device 4 is inserted into soil to be sampled, and detection obtains the moisture in pedotheque.
The moisture information is inputted to data processing equipment 7, after the capture card conversion of data processing equipment 7, by micro-
Processor combines the weight information of effective data signal and the pedotheque gathered, can will be contained in pedotheque prepare liquid
The concentration of content of beary metal is converted to mass content ratio, i.e. the quality containing heavy metal in every gram of pedotheque.Passed by moisture
Sensor 4 gathers the moisture information in soil, and the humidity of pedotheque directly can not only be detected, with reference to a soil huge sum of money
Belong to the content of beary metal concentration information in prepare liquid, additionally it is possible to more intuitively reflect the content situation of heavy metal in pedotheque.
Data processing equipment 7 is also associated with temperature sensor 5.The ambient temperature data that temperature sensor 5 collects is direct
Input to data processing equipment 7.While the content of beary metal in analyzing pedotheque, environment temperature corresponding to record is believed
Breath, in order to which analysis environments temperature is to data acquisition and/or the influence of analyzing and processing process.
Further, data processing equipment 7 is also associated with GPS6.While pedotheque is gathered, combining cartographic information,
The collection position of pedotheque is recorded, is easy to the arrangement to data to sort out, to carry out the management of system.
In a specific embodiment, the pedotheque of collection is divided into two parts, and portion uses dress of the present utility model
Put and detected, another send agricultural product quality and safety inspection center to be detected, and the contrast of its testing result is shown in Table 2.
The soil heavy metal cadmium of table 2 detects comparing result
A kind of portable soil heavy metal detection means of the present utility model, soil is gathered using glass microelectrode array 1
The concentration information of content of beary metal in sample prepare liquid, and the concentration information is converted into raw electrical signal, obtained to reduce
The adverse effect for the interference signal supervened during raw electrical signal, device uses the battery powered of low ripple, also, glass is micro-
Electrod-array 1 is directly connected with the adapting amplifier device 2 for amplifying raw electrical signal.On this basis, using signal condition
Circuit 3 carries out further noise reduction process to the enhancing electric signal after enhanced processing, improves data processing equipment 7 to the micro- electricity of glass
The processing degree of accuracy for the raw electrical signal that pole array 1 obtains.
In addition, data processing equipment 7 has been also respectively connected with moisture transducer 4, temperature sensor 5 and GPS6, with right respectively
The collection position of environment temperature and pedotheque when moisture in soil, detection is monitored, with more accurately right
Pedotheque is analyzed.
Finally, the present processes are only preferable embodiment, are not intended to limit the scope of protection of the utility model.
All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc., should be included in this reality
Within new protection domain.
Claims (8)
1. a kind of portable soil heavy metal detection means, it is characterised in that it includes：
For the heavy metal concentration to be measured in heavy metal-polluted soil prepare liquid to be converted into the glass microelectrode array of raw electrical signal
(1), the glass microelectrode array (1) includes a reference electrode (11) and at least one working electrode (12), the work
The Cd of the liquid of 15 μm of -50 μm of length of filling in electrode2+Ion selects the Pb of the liquid of exchanger or 15 μm of -50 μm of length2+From
Son selection exchanger；
The adapting amplifier device (2) being connected with the glass microelectrode array (1), the adapting amplifier device (2) are used to amplify
The raw electrical signal with obtain strengthen electric signal；
The signal conditioning circuit (3) being connected with the adapting amplifier device (2), the signal conditioning circuit (3) are used for by described in
Enhancing electric signal carries out noise reduction process to obtain effective electric signal；
The data processing equipment (7) being connected with the signal conditioning circuit (3), the data processing equipment are used to change and handle
Effective electric signal.
A kind of 2. portable soil heavy metal detection means as claimed in claim 1, it is characterised in that：The glass microelectrode
Array (1) is connected with the adapting amplifier device (2) by way of grafting.
3. a kind of portable soil heavy metal detection means as claimed in claim 1 or 2, it is characterised in that also include：Supply
The power supply of electric energy, the power supply use the battery of low ripple.
A kind of 4. portable soil heavy metal detection means as claimed in claim 1, it is characterised in that：The signal condition electricity
Road (3) includes for the voltage follower circuit of stabilization signal and the filter capacitor for filtering out noise.
A kind of 5. portable soil heavy metal detection means as claimed in claim 1, it is characterised in that：The data processing dress
Putting (7) includes capture card and microprocessor, and the capture card has 16 road acquisition channels, and the collection digit of the capture card is
16.
6. a kind of portable soil heavy metal detection means as claimed in claim 1, it is characterised in that also include：With it is described
Data processing equipment (7) is connected and is used for the moisture transducer (4) for detecting soil moisture.
7. a kind of portable soil heavy metal detection means as claimed in claim 1, it is characterised in that also include：With it is described
Data processing equipment (7) is connected and for the temperature sensor (5) of monitoring of environmental temperature.
8. a kind of portable soil heavy metal detection means as claimed in claim 1, it is characterised in that also include：With it is described
Data processing equipment (7) is connected and for positioning and recording the GPS (6) of sampling location information.
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| CN201720376844.5U CN206710365U (en) | 2017-04-11 | 2017-04-11 | A kind of portable soil heavy metal detection means |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442960A (en) * | 2020-04-20 | 2020-07-24 | 北京仪达仪器有限责任公司 | Kit and method for rapidly extracting heavy metals in soil |
| CN110082417B (en) * | 2019-04-13 | 2021-01-29 | 西安科技大学 | LIX type microelectrode array device and preparation method thereof |
| CN106970125B (en) * | 2017-04-11 | 2024-02-23 | 北京农业智能装备技术研究中心 | Portable soil heavy metal detection device |
-
2017
- 2017-04-11 CN CN201720376844.5U patent/CN206710365U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970125B (en) * | 2017-04-11 | 2024-02-23 | 北京农业智能装备技术研究中心 | Portable soil heavy metal detection device |
| CN110082417B (en) * | 2019-04-13 | 2021-01-29 | 西安科技大学 | LIX type microelectrode array device and preparation method thereof |
| CN111442960A (en) * | 2020-04-20 | 2020-07-24 | 北京仪达仪器有限责任公司 | Kit and method for rapidly extracting heavy metals in soil |
| CN111442960B (en) * | 2020-04-20 | 2023-12-29 | 北京仪达仪器有限责任公司 | Kit and method for rapidly extracting heavy metals in soil |
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