CN107121480A - A kind of working electrode of carbon material modification detects the electrochemical method of micro and trace arsenic and heavy metal - Google Patents
A kind of working electrode of carbon material modification detects the electrochemical method of micro and trace arsenic and heavy metal Download PDFInfo
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- CN107121480A CN107121480A CN201611110917.2A CN201611110917A CN107121480A CN 107121480 A CN107121480 A CN 107121480A CN 201611110917 A CN201611110917 A CN 201611110917A CN 107121480 A CN107121480 A CN 107121480A
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 31
- 239000003575 carbonaceous material Substances 0.000 title claims abstract description 24
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 23
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 230000004048 modification Effects 0.000 title claims abstract description 22
- 238000012986 modification Methods 0.000 title claims abstract description 22
- 238000002848 electrochemical method Methods 0.000 title claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 239000006229 carbon black Substances 0.000 claims abstract description 14
- 229920000557 Nafion® Polymers 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 8
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 7
- 239000010439 graphite Substances 0.000 claims abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- 238000003950 stripping voltammetry Methods 0.000 claims description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 7
- 229910052793 cadmium Inorganic materials 0.000 claims description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 4
- 238000000840 electrochemical analysis Methods 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000002604 ultrasonography Methods 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 238000002484 cyclic voltammetry Methods 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 10
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 4
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 229910001451 bismuth ion Inorganic materials 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000003968 anodic stripping voltammetry Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000004445 quantitative analysis Methods 0.000 abstract 1
- 235000019241 carbon black Nutrition 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- 238000000835 electrochemical detection Methods 0.000 description 8
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 description 7
- 238000001548 drop coating Methods 0.000 description 6
- 238000005498 polishing Methods 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 3
- 229910021389 graphene Inorganic materials 0.000 description 3
- 239000001632 sodium acetate Substances 0.000 description 3
- 235000017281 sodium acetate Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 229910001430 chromium ion Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910021397 glassy carbon Inorganic materials 0.000 description 2
- 229920000858 Cyclodextrin Polymers 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 108091034117 Oligonucleotide Proteins 0.000 description 1
- KWEGYAQDWBZXMX-UHFFFAOYSA-N [Au]=[Se] Chemical compound [Au]=[Se] KWEGYAQDWBZXMX-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002795 fluorescence method Methods 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 238000004846 x-ray emission Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/48—Systems using polarography, i.e. measuring changes in current under a slowly-varying voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/308—Electrodes, e.g. test electrodes; Half-cells at least partially made of carbon
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The present invention relates to the electrochemical method that a kind of working electrode of carbon material modification detects micro and trace arsenic and heavy metal, belong to the association areas such as food, health, environmental monitoring.The present invention mainly uses the common carbon material such as carbon material such as graphite, carbon black, activated carbon to modify working electrode, and quantitative analysis measure is carried out to micro and trace arsenic and heavy metal ion by anodic stripping voltammetry.The working electrode of the present invention, which only needs to be coated in electrode surface with carbon material, just can directly test, and adds micro nafion or appropriate bismuth ion is added in solution to be measured, can increase substantially the sensitivity of working electrode.Electrode modified material is cheap and easy to get, modification simple and fast, can be while the one or more micro and trace arsenics of quick detection and heavy metal ion, sensitivity is high, performance is stable, detection limit is low, there is extraordinary popularizing application prospect, and carbon material proposed by the present invention is the first choice of the real work electrode coating material of micro electrochemical method quick detection and trace arsenic and heavy metal.
Description
Technical field
The present invention relates to the electrochemical analysis detection field such as food, health, environment, more particularly to a kind of carbon material modification
Working electrode detect the electrochemical method of micro and trace arsenic and heavy metal.
Background technology
Heavy metal pollution is directly detrimental to health, and causes environmental quality to deteriorate, especially wherein lead, mercury, cadmium, chromium with
And five kinds of harm such as metalloid arsenic are maximum.Electrochemical Detection heavy metal element relative to atomic absorption spectrography (AAS), atomic fluorescence method,
For the other methods such as ultraviolet-visible spectrophotometry, x ray fluorescence spectrometry, inductively coupled plasma mass spectrometry, have
Equipment is simple, and easy to operate, the advantages of sensitivity is high has important application value in fields such as food, health, environment.
Currently used in the patent of Electrochemical Detection arsenic and heavy metal, useful alginic acid functionalization graphene（CN
104391030 B）, cyclodextrin/graphene nanometer composite（CN 103235019 B）, be coated with the working electrode for showing film（CN
103592356 A）, nitrogen-doped carbon nanometer pipe response film working electrode be used as working electrode（CN 103954667 A）, deposition
The ordered mesopore carbon of polyphenyl limb and 2-sulfydryl second a heatable brick bed sodium sulfonate（CN 103983681 A）, Nafion-carbon nanotube mixture
（CN 102135518 A）, nitrogen-doped graphene repaiies（CN 105067691 A）, gold-selenium composite nano materials（CN
103675059 B）, modified graphene oxide（CN 105717174 A）, sulfydryl modification mercury specific oligonucleotide（CN
102706940 A）Working electrode is modified Deng material.It is seen that, the working electrode load that these patented technologies are provided
Or active ingredient material price is of a relatively high, or the preparation process of working electrode is relative complex, cumbersome, these factors are all made
About electrochemical method detects the application popularization of micro or even trace arsenic and heavy metal element.
This patent is modified working electrode analysis with the common carbon material such as graphite, carbon black, activated carbon and detects micro and trace
Arsenic and heavy metal element, material therefor are cheap and easy to get, modification simple and fast, and sensitivity is high, and performance is stable, there is very strong push away
Wide application prospect.
The content of the invention
The purpose of the present invention is for during the current electrochemical method micro and trace arsenic of detection and heavy metal, work is electric
A kind of not enough working electrode micro and trace arsenic of detection modified there is provided carbon material and a huge sum of money that the practical application of pole selection is present
The electrochemical method of category.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of working electrode of carbon material modification detects the electrochemical method of micro and trace arsenic and heavy metal, including the work
Electrode is one or more kinds of combinations in graphite, carbon black, activated carbon, and preparation method is as follows:The carbon material of certain mass is added to
It can be tested after ultrasonic disperse in ethanol, isopropanol or water equal solvent, drying at room temperature, continue the micro nafion of dropwise addition and arrive
Working electrode surface either disperses or bismuth ion is added in solion to be measured in above-mentioned carbon material solution, can carry
High detection scope.Load capacity 0.5 ug of the carbon material on electrode~100 ug, preferably 5~50 ug.Drop coating DuPont 5%
Nafion solution is added in solution and continues to add Bi in solution scattered and to be measured3+Ion is remarkably improved detection model
Enclose, the drop coating amount of nafion solution is 0.1~10 uL, preferably 1~3 uL；The addition of nafion solution is 1~1000 uL
/ mL prepare liquids, preferably：1~10 uL/mL prepare liquids, preferably 50~500 uL/mL prepare liquids；Detect Bi in solution3+From
It is sub with element to be measured mole ratio be 0.1~1000, preferably 2~200.
The electrode system of described electrochemical detection method includes two electrodes or three-electrode system.
Described electrochemical analysis method includes Differential Pulse Stripping Voltammetry, square wave Stripping Voltammetry using stripping voltammetry
The correlation techniques such as method, Linear Sweep Stripping Voltammetric.
Described detection range is micro and trace arsenic and heavy metal.Wherein, the preferred lead of heavy metal, chromium, mercury, cadmium, copper,
Zinc.
Compared with prior art, the advantage of the invention is that：
1st, working electrode coating material abundance, is readily available, cheap, and working electrode preparation process is simple, only
Need the electricity such as the work of drop coating to after polishing after disperseing graphite, carbon black, activated carbon etc. in ethanol, isopropanol or water equal solvent
After extremely above drying.
2nd, micro nafion is properly added on the working electrode prepared, and is fitted in the solution of material to be detected
As a certain amount of Bi of addition3+, detection range and sensitivity can be significantly improved.
3rd, Electrochemical Test Procedure is simple, and the testing time is short, stability and favorable reproducibility, and several elements can be detected simultaneously.
It can solve the problem that micro electrochemical method quick detection and trace arsenic and the actual application problem of heavy metal.
Embodiment
Below by embodiment, the invention will be further described：
Embodiment 1
It is prepared by working electrode：5 mg carbon blacks are added to ultrasonic disperse 40 minutes in 2 mL ethanol, and sealing preserve is stand-by.Make every time
It is uniform with preceding ultrasonic disperse, the hanging drop that 6 uL are 15 ug is extracted with microsyringe and is added to glassy carbon electrode surface after polishing,
It is stored at room temperature Du Pont's coating solution that 2 uL are added dropwise after drying（The nafion solution of DuPont 5%）To electrode surface, after natural drying
It is stand-by.
Electrochemical Detection uses Differential Pulse Stripping Voltammetry, and parameter is as follows：Accumulating potential -0.8V, enrichment time 700s,
Cushioning liquid is acetic acid/sodium acetate solution of PH=4.5.
Add Bi3+When ion is 20 with lead ion mol ratio to be measured, the working electrode of carbon black modification is in detection heavy metal lead
When, the concentration and the dissolution peak current range of linearity of lead ion are wide, and sensitivity is high.
Embodiment 2
It is prepared by working electrode：On glass-carbon electrode after the aqueous isopropanol drop coating to polishing of 20 ug graphite powders, continue that 2 uL are added dropwise
The nafion solution of DuPont 5% to electrode surface, it is stand-by after natural drying.
Electrochemical Detection uses Differential Pulse Stripping Voltammetry, arrange parameter be the same as Example 1.
Add Bi3+When ion is 50 with lead ion mol ratio to be measured, the working electrode of carbon black modification is in detection heavy metal lead
When, the concentration and the dissolution peak current range of linearity of lead ion are wide, and sensitivity is high..
Embodiment 3
It is prepared by working electrode：On glass-carbon electrode after the aqueous isopropanol drop coating to polishing of 20 ug activated carbons, continue that 3 uL are added dropwise
The nafion solution of DuPont 5% to electrode surface, it is stand-by after natural drying.
Electrochemical Detection uses square wave stripping voltammetry, and major parameter sets as follows：Accumulating potential -0.8V, enrichment time
700s, frequency 15Hz, amplitude 0.025V, gain 0.004V, cushioning liquid are acetic acid/sodium acetate solution of PH=4.5.
Add Bi3+When ion is 50 with lead ion mol ratio to be measured, the working electrode of carbon black modification is in detection heavy metal lead
When, the concentration and the dissolution peak current range of linearity of lead ion are wide, and sensitivity is high.
Embodiment 4
It is prepared by working electrode：On glass-carbon electrode after the ethanol solution drop coating to polishing of 25 ug carbon blacks, continue to be added dropwise 2 uL's
The nafion solution of DuPont 5% is stand-by after natural drying to electrode surface.
Electrochemical Detection uses square wave stripping voltammetry, and major parameter sets be the same as Example 3.
Add Bi3+Ion with whne sounding lead, chromium ion mol ratio be 50 when, carbon black modification working electrode detection heavy metal
During lead, lead, the concentration of chromium ion and the dissolution peak current range of linearity are wide, and sensitivity is high.
Embodiment 5
It is prepared by working electrode：5 mg carbon blacks are added to ultrasonic disperse 30 minutes in 2 mL ethanol, add 150 uL DuPont
5% nafion solution, continues ultrasound 30 minutes, and sealing preserve is stand-by.It is uniform using preceding ultrasonic disperse every time, use microsyringe
Extract the hanging drop that 3uL is 7.5 ug and be added to glassy carbon electrode surface after polishing, be stored at room temperature stand-by after natural drying.
Electrochemical Detection uses Differential Pulse Stripping Voltammetry, and major parameter sets as follows：Accumulating potential -1.2V, enrichment
Time 180s, cushioning liquid is acetic acid/sodium acetate solution of PH=5.0.
Add Bi3+When ion is 10 with lead ion mol ratio to be measured, the working electrode of carbon black modification detects a huge sum of money at the same time
When belonging to lead, cadmium, the concentration and the range of linearity of dissolution peak current of two heavy metal species ions are wide, and sensitivity is high.
Test repeatability, reappearance and the stability of working electrode prepared by the present invention are good, and electrode need not before test
Electrochemical activation, convenient test different ions are detected simultaneously when, is interfered with each other small, is adapted to while online prison between heavy metal ion
Survey contents of many kinds of heavy metal ion.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent formulas or equivalent flow conversion that bright specification is made, or other related technical fields are directly or indirectly used in,
Similarly it is included within the scope of the present invention.
Claims (7)
1. a kind of working electrode of carbon material modification detects the electrochemical method of micro and trace arsenic and heavy metal, it is characterised in that
The carbon material of working electrode is one or more kinds of combinations in graphite, carbon black, activated carbon, the preparation method of the working electrode
It is as follows:One or more kinds of combine in graphite, carbon black, activated carbon is added to ultrasound point in ethanol, isopropanol or water equal solvent
Dissipate, sealing preserve is standby.
2. a kind of working electrode of carbon material modification according to claim 1 detects the electricity of micro and trace arsenic and heavy metal
Chemical method is characterized in that the working electrode of carbon material modification can be used in two electrodes or three-electrode system.
3. a kind of working electrode of carbon material modification according to claim 1 or 2 detects micro and trace arsenic and heavy metal
Electrochemical method be characterized in that electrochemical analysis method uses stripping voltammetry, including Differential Pulse Stripping Voltammetry, side
One or more kinds of combinations in ripple stripping voltammetry, Linear Sweep Stripping Voltammetric, cyclic voltammetry.
4. a kind of working electrode of carbon material modification according to claim 1,2 or 3 detects micro and trace arsenic and a huge sum of money
The electrochemical method of category, it is characterised in that the material of carbon material modification working electrode detection is micro and trace arsenic and heavy metal.
5. a kind of working electrode of carbon material modification according to claim 1,3 or 4 detects micro and trace arsenic and a huge sum of money
The electrochemical method of category, it is characterised in that the heavy metal of detection includes：Lead, chromium, mercury, cadmium, copper, zinc etc..
6. according to claim 1,2,3,4 or 5 a kind of carbon material modification working electrode detect micro and trace arsenic and
The electrochemical method of heavy metal, it is characterised in that Bi in detection solution3+Ion and element to be measured mole ratio for 0.1~
1000。
7. according to claim 1,2,3,4 or 5 a kind of carbon material modification working electrode detect micro and trace arsenic and
The electrochemical method of heavy metal, it is characterised in that the nafion of detection（DuPont 5%~nafion solution）Addition be：1
~1000 uL/mL prepare liquids.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110917.2A CN107121480A (en) | 2016-12-06 | 2016-12-06 | A kind of working electrode of carbon material modification detects the electrochemical method of micro and trace arsenic and heavy metal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611110917.2A CN107121480A (en) | 2016-12-06 | 2016-12-06 | A kind of working electrode of carbon material modification detects the electrochemical method of micro and trace arsenic and heavy metal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576716A (en) * | 2017-09-18 | 2018-01-12 | 中国科学院烟台海岸带研究所 | A kind of acupuncture needle base working electrode electrochemical sensor for detecting trace heavy metal |
| CN108020586A (en) * | 2017-12-04 | 2018-05-11 | 吉林大学 | A kind of method that working electrode in three-electrode system is made using walnut shell as raw material |
| CN108195903A (en) * | 2017-12-25 | 2018-06-22 | 济南大学 | A kind of preparation method of electrochemical sensing material to arsenic detection |
-
2016
- 2016-12-06 CN CN201611110917.2A patent/CN107121480A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| DONGYUE LI ET: "Simultaneous determination of Cd(II) and Pb(II) by differential pulse anodic stripping voltammetry based on graphite nanofibers–Nafion composite modified bismuth film electrode", 《TALANTA》 * |
| RAJESH MADHU ET: "Eco-friendly synthesis of activated carbon from dead mango leaves for the ultrahigh sensitive detection of toxic heavy metal ions and energy storage applications", 《 ROYAL SOCIETY OF CHEMISTRY》 * |
| STEFANO CINTI ET: "Hg2+ detection using a disposable and miniaturized screen-printed electrode modified with nanocomposite carbon black and gold nanoparticles", 《ENVIRON SCI POLLUT RES》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576716A (en) * | 2017-09-18 | 2018-01-12 | 中国科学院烟台海岸带研究所 | A kind of acupuncture needle base working electrode electrochemical sensor for detecting trace heavy metal |
| CN108020586A (en) * | 2017-12-04 | 2018-05-11 | 吉林大学 | A kind of method that working electrode in three-electrode system is made using walnut shell as raw material |
| CN108195903A (en) * | 2017-12-25 | 2018-06-22 | 济南大学 | A kind of preparation method of electrochemical sensing material to arsenic detection |
| CN108195903B (en) * | 2017-12-25 | 2019-07-02 | 济南大学 | A kind of preparation method of the electrochemical sensing material of pair of arsenic detection |
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