CN204269591U - A kind of Portable heavy metal fast detector - Google Patents
A kind of Portable heavy metal fast detector Download PDFInfo
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- CN204269591U CN204269591U CN201420513939.3U CN201420513939U CN204269591U CN 204269591 U CN204269591 U CN 204269591U CN 201420513939 U CN201420513939 U CN 201420513939U CN 204269591 U CN204269591 U CN 204269591U
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Abstract
A kind of Portable heavy metal fast detector that the utility model provides, anodic stripping voltammetry is adopted to detect content of beary metal fast, detection speed is fast, highly sensitive, detection limit is low, safe and reliable, can the heavy metal in water body, food, cosmetics, environment be detected fast, accurately.Comprise main frame and electrolysis unit; Main frame comprises shell, the work mainboard be placed in shell, and the touch LCD be connected with work mainboard shields, power supply key, external interface; Work mainboard comprises the single-chip microcomputer, D/A module, potentiostatic circuit module, current conversion module and the A/D module that connect successively, and A/D module connects single-chip microcomputer again, also comprises the power-supply system be connected with single-chip microcomputer; Electrolysis unit comprises cable, electrode tip holder, electrode, base, electrolytic cell cup; Cable one end connects the external interface of main frame, and the other end is fastened on the electrode on electrode tip holder, and electrolytic cell cup is placed on base, for the electrode holding solution to be measured and stretch into.
Description
Technical field
The utility model relates to a kind of detector, particularly a kind of Portable heavy metal fast detector.
Background technology
Heavy metal refers to that proportion is greater than the metallic element of 4 or 5, about has 45 kinds, as copper, lead, zinc, iron, cobalt, nickel, vanadium, niobium, tantalum, titanium, manganese, cadmium, mercury, tungsten, molybdenum, gold, silver etc.Although the heavy metals such as manganese, copper, zinc are the trace elements required for vital movement, not vital movement institute is required for most of heavy metal such as mercury, lead, cadmium etc., and all heavy metals to exceed finite concentration all harmful.
Heavy metal is extensively present in occurring in nature, because the exploitation of mankind's heavy metal, smelting, processing and business manufacturing activities are increasing, many heavy metals such as lead, mercury, cadmium, cobalt etc. are caused to enter in air, water, soil, especially even more serious to the pollution of crops.The pollution of heavy metal to crops enters into food with the form of chemistry, and can not remove by simply soaking and washing, heavy metal cannot carry out biodegradation, by accumulating in human body after the effect of food chain.Heavy metal in human body can and protein and various enzyme there is strong interaction, make them lose activity, also can enrichment in some organ of human body, if exceed the tolerant limit of human body, human body acute poisoning, subacute poisoning, slow poisoning etc. can be caused, people is known from experience and causes very large harm.Therefore accurately and rapidly detect the content of heavy metal element in water, food, have extremely important meaning for water quality safety, food quality evaluation, ecologic environment examination and human health protection.
At present, the method detected for trace heavy metal mainly contains the spectroscopic analysis methods such as Atomic absorption, atomic fluorescence, inductively coupled plasma, inductively coupled plasma mass spectrometry, and UV-spectrophotometry etc.Instrument needed for these methods usually cost itself is expensive, and operating cost is high, needs to possess skilled operating experience and enough work spaces, effort more time-consuming when realizing detecting on a large scale; What have can not carry out polycomponent or multielement analysis; Some meetings cannot measure because of the interference such as element, spectrum; More can not reach the object of Site Detection.
Electrochemical analysis method be according to material in the solution with the electrochemical properties on electrode based on a kind of analytical approach of setting up.Electrochemical methods is applied to detection heavy metal and mainly comprises stripping voltammetry, polarography, potentiometry, conductimetry etc.Stripping voltammetry is a kind of very sensitive trace analysis methods, not only highly sensitive, good resolution, can Simultaneously test various metals, do not affect by turbidity, colourity etc., be easy to realization scene, quick, real-time, online, continuous and Aulomatizeted Detect, meet current developing direction, the method can be applicable to the aspects such as Environmental emergency monitoring, tap water detection, food, pharmacy, hospital wastewater monitoring.
Utility model content
The utility model provides a kind of Portable heavy metal fast detector, adopts anodic stripping voltammetry to detect a huge sum of money fast
Belong to content, detection speed be fast, integrated level is high, highly sensitive, detection limit is low, good resolution, safe and reliable, can be right
Heavy metal in water body, food, cosmetics, environment detects fast, accurately.
The technical solution of the utility model is:
A kind of Portable heavy metal fast detector, is characterized in that, comprise main frame and electrolysis unit; Described main frame comprises shell, the work mainboard be placed in shell, and the touch LCD be connected with work mainboard shields, power supply key, external interface; Described work mainboard comprises the single-chip microcomputer, D/A module, potentiostatic circuit module, current conversion module and the A/D module that connect successively, and described A/D module connects single-chip microcomputer again, also comprises the power-supply system be connected with single-chip microcomputer; Described electrolysis unit comprises cable, electrode tip holder, electrode, base, electrolytic cell cup; Described cable one end connects the external interface of main frame, the other end is fastened on the electrode on electrode tip holder, described electrolytic cell cup is placed on base, for the electrode holding solution to be measured and stretch into, under the control of work mainboard, under certain potentials, make solution electro-deposition to be measured on electrode, reverse scan current potential again, the current peak of acquisition and recording deposited material stripping simultaneously, obtain Stripping Voltammetry curve, by peak point current and material concentration proportional relationship, determine the content of beary metal of the solution to be measured in electrolytic cell cup; Data after the process of work mainboard for showing boot-strap information and System self-test result, and are presented on screen by the single-chip microcomputer of described touch LCD screen connection work mainboard.
Described work mainboard also comprises the GPS module, the GPRS communication module that are connected with single-chip microcomputer respectively, for transmitting measurement result by wireless network.
Described touch LCD screen is capacitance plate or touch screens.
Described electrode tip holder is provided with stirrer, and the program according to setting stirs the solution to be measured be contained in electrolytic cell cup, and rotating speed is adjustable, and scope is 100-1000r/min.
Described power-supply system connects rechargeable battery or 22V AC power.
The power-supply system of described power supply key connection work mainboard, can be arranged on the face of overlooking of main frame, look up face, left surface or right flank.
Technique effect of the present utility model:
A kind of Portable heavy metal fast detector that the utility model provides, anodic stripping voltammetry is adopted to detect content of beary metal fast, overcome giant chemical instrument and detect the bulky of existence, expensive equipment, operating cost is high, detecting step is loaded down with trivial details and be not suitable for the shortcomings such as on-site rapid inspection, this instrument miniaturization designs, easy to carry, stable performance reliable in quality, collection enrichment is stirred, Electrochemical Detection, data processing is in one, integrated level is high, easy and simple to handle, highly sensitive, detection speed is fast, good resolution, safe and reliable, Simultaneously test detection device for multi metallic elements, can be applicable to food security, environmental monitoring, cosmetics detect, the fields such as chemical industry, to water body, food, cosmetics, heavy metal in environment carries out fast, accurate detection.Heavy metal fast detector of the present utility model uses touch LCD screen, and instead of mechanical push button panel, touch-screen is a kind of up-to-date computer input apparatus, and it is the simplest, convenient current, natural a kind of man-machine interaction mode.Touch-screen have sturdy and durable, reaction velocity fast, save space, be easy to many advantages such as interchange.Of the present utility modelly also comprise GPS module, GPRS communication module, measurement result can be transmitted by wireless network.The probe of heavy metal fast detector is provided with stirrer, and it can carry out stirring and stopping according to the program of setting, and rotating speed is adjustable, decreases the time that enrichment needs, improves detection speed.
Accompanying drawing explanation
Fig. 1 is the structural representation of Portable heavy metal fast detector of the present utility model;
Fig. 2 is the vertical view of Portable heavy metal fast detector of the present utility model;
Fig. 3 is the work mainboard schematic diagram of Portable heavy metal fast detector of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As shown in Figure 1 and Figure 2, be the structural representation of Portable heavy metal fast detector of the present utility model.Portable heavy metal fast detector of the present utility model comprises main frame and electrolysis unit two parts.Wherein main frame comprise shell 101, built-in work mainboard 102, shell front be touch LCD screen 103, there are power supply key 104, power interface 105 and external interface in shell side, comprises usb 1 06 and electrolysis unit interface 107.Power supply key 104 connects the power-supply system of work mainboard, can be arranged on the face of overlooking of main frame, look up face, left surface or right flank.
As shown in Figure 3, be the work mainboard schematic diagram of Portable heavy metal fast detector of the present utility model.Described work mainboard 102 comprises the single-chip microcomputer 202, D/A module 205, potentiostatic circuit module 206, current conversion module 207 and A/D module 208, the A/D module 208 that connect successively and connects single-chip microcomputer 202 again, also comprises the power-supply system be connected with single-chip microcomputer; Power-supply system connects rechargeable battery or 22V AC power, for detector provides power supply; Single-chip microcomputer is the processor based on C8051 family chip, can meet the demand that instrument controlling, data acquisition and data processing, data show; Also comprising touch LCD screen 203, connect the single-chip microcomputer of work mainboard, for showing boot-strap information and System self-test result, and the data after the process of work mainboard being presented on screen; Also comprise the GPS module 201, the GPRS communication module 204 that are connected with single-chip microcomputer respectively, for transmitting measurement result by wireless network.
Electrolysis unit comprises cable, electrode tip holder, electrode, base, electrolytic cell cup; Cable one end connects the external interface of main frame, the other end is fastened on the electrode on electrode tip holder, electrolytic cell cup is placed on base, for the electrode holding solution to be measured and stretch into, under the control of work mainboard, under certain potentials, make solution electro-deposition to be measured on electrode, reverse scan current potential again, the current peak of acquisition and recording deposited material stripping simultaneously, obtain Stripping Voltammetry curve, by peak point current and material concentration proportional relationship, determine the content of beary metal of the solution to be measured in electrolytic cell cup.Electrode tip holder is provided with stirrer, and it can stir the solution to be measured be contained in electrolytic cell cup according to the program of setting, and rotating speed is adjustable, and scope is 100-1000r/min, decreases the time that enrichment needs, improves detection speed.
The operation steps of Portable heavy metal fast detector of the present utility model is as follows:
1, electrode is processed: be laid in by chamois leather on experiment table, get a little burnishing powder and be sprinkling upon on chamois leather, the deionized water taken a morsel is sprinkling upon on burnishing powder, and electrode is ground 1 minute above, then clean with deionized water rinsing.
2, add the electrolytic solution that 10ml metal pair to be measured is answered in electrolytic cell cup, then add 10ml solution to be measured, guarantee the dipped electrode of solution; Electrolytic cell cup is put on firm banking.
3, the power supply key on main frame is opened, screen shows the result of boot-strap information and System self-test.System, by after self-inspection, arranges the respective detailed parameters that will measure heavy metal, starts the program of test, detects, and the data after the process of work mainboard are presented on screen.
Embodiment 1 heavy metal fast detector detects reappearance experiment
Pb
2+plumbous standard solution: 20mg/L (State Environmental Protection Administration's standard model, by red fuming nitric acid (RFNA) and pure water volume ratio 1:99 obtain solution).Get 20mg/L Pb
2+it is for subsequent use that plumbous standard solution 10ul is settled to 10ml.
The Acetic acid-sodium acetate damping fluid getting the 0.1mol/L pH 4.0 of 10ml adds as electrolyte detection liquid (electrolytic solution) in electrolytic cell cup, is added in electrolytic cell cup by plumbous for 10ml titer.Opened by power key on main frame, by instrument preheating, the software of start detection, arranges and measures plumbous design parameter.Start the program of test, detect, the data after the process of work mainboard are presented on screen.Repeat above-mentioned steps 6 times, can be found out by the experimental data obtained, RSD<5%, illustrate that the repeatability of this instrument is good.
Table 1 repeated experiment data
Embodiment 3 heavy metal fast detector preci-sion and accuracy experiments
Cd
2+standard solution: 20mg/L (State Environmental Protection Administration's standard model, by red fuming nitric acid (RFNA) and pure water volume ratio 1:99 obtain solution).
From Cd
2+in standard solution, accurate measuring 50ul is settled to 10ml, carries out mark-on experiment according to the detecting step in embodiment 2, measures recovery of standard addition, checks accuracy and the precision of this instrument according to data.
Table 2Cd
2+mark-on data collection
As can be seen from Table 2, the recovery of standard addition error of Cd is within 5%, and illustrate that this instrument accuracy grade is higher, relative standard deviation only has 0.66%, illustrates that the precision of this instrument is better, can meet the mensuration demand that traces of heavy metals is analyzed completely.Herein means bright, more than describe and contribute to those skilled in the art and understand the invention, but and the protection domain of unrestricted the invention.Any enforcement improving the equivalent replacement described above, modification and/or delete numerous conforming to the principle of simplicity and carry out not departing from the invention flesh and blood, all falls into the protection domain of the invention.
Claims (6)
1. a Portable heavy metal fast detector, is characterized in that, comprises main frame and electrolysis unit; Described main frame comprises shell, the work mainboard be placed in shell, and the touch LCD be connected with work mainboard shields, power supply key, external interface; Described work mainboard comprises the single-chip microcomputer, D/A module, potentiostatic circuit module, current conversion module and the A/D module that connect successively, and described A/D module connects single-chip microcomputer again, also comprises the power-supply system be connected with single-chip microcomputer; Described electrolysis unit comprises cable, electrode tip holder, electrode, base, electrolytic cell cup; Described cable one end connects the external interface of main frame, the other end is fastened on the electrode on electrode tip holder, described electrolytic cell cup is placed on base, for the electrode holding solution to be measured and stretch into, under the control of work mainboard, under certain potentials, make solution electro-deposition to be measured on electrode, reverse scan current potential again, the current peak of acquisition and recording deposited material stripping simultaneously, obtain Stripping Voltammetry curve, by peak point current and material concentration proportional relationship, determine the content of beary metal of the solution to be measured in electrolytic cell cup; Data after the process of work mainboard for showing boot-strap information and System self-test result, and are presented on screen by the single-chip microcomputer of described touch LCD screen connection work mainboard.
2. Portable heavy metal fast detector according to claim 1, is characterized in that, described work mainboard also comprises the GPS module, the GPRS communication module that are connected with single-chip microcomputer respectively, for transmitting measurement result by wireless network.
3. Portable heavy metal fast detector according to claim 1, is characterized in that, described touch LCD screen is capacitance plate or touch screens.
4. Portable heavy metal fast detector according to claim 1, it is characterized in that, described electrode tip holder is provided with stirrer, the program according to setting stirs the solution to be measured be contained in electrolytic cell cup, rotating speed is adjustable, and scope is 100-1000r/min.
5. Portable heavy metal fast detector according to claim 1, is characterized in that, described power-supply system connects rechargeable battery or 22V AC power.
6. Portable heavy metal fast detector according to claim 1, is characterized in that, the power-supply system of described power supply key connection work mainboard, can be arranged on the face of overlooking of main frame, look up face, left surface or right flank.
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| CN201420513939.3U CN204269591U (en) | 2014-09-05 | 2014-09-05 | A kind of Portable heavy metal fast detector |
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| CN201420513939.3U CN204269591U (en) | 2014-09-05 | 2014-09-05 | A kind of Portable heavy metal fast detector |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483184A (en) * | 2016-10-14 | 2017-03-08 | 山东理工大学 | Heavy metal analysis device and method based on graphene sensor |
| CN106950264A (en) * | 2017-05-17 | 2017-07-14 | 武汉中科志康生物科技有限公司 | A kind of Portable heavy metal detector and its detection method |
| CN108226260A (en) * | 2017-12-27 | 2018-06-29 | 潘彦伶 | A kind of heavy metal quick-check sensor of cosmetics |
| CN108490014A (en) * | 2018-03-26 | 2018-09-04 | 左文财 | Multifunctional hand-held heavy metal-polluted soil detector |
| CN109632888A (en) * | 2018-12-27 | 2019-04-16 | 广州安食通信息科技有限公司 | A kind of food heavy metal detector and food heavy metal detection method |
| CN110308191A (en) * | 2018-03-27 | 2019-10-08 | 瑞准科技股份有限公司 | Hand-held heavy metal rapid detection system |
| CN111579628A (en) * | 2020-06-24 | 2020-08-25 | 南方科技大学 | Arsenic analyzer, system device comprising same and application of device |
| CN112834587A (en) * | 2021-01-05 | 2021-05-25 | 长沙卡琳顿科技有限公司 | Portable electrochemical heavy metal detector |
| WO2024005719A1 (en) * | 2022-06-30 | 2024-01-04 | Agency For Science, Technology And Research | Analyser and computer-implemented method for pollutant detection |
-
2014
- 2014-09-05 CN CN201420513939.3U patent/CN204269591U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483184A (en) * | 2016-10-14 | 2017-03-08 | 山东理工大学 | Heavy metal analysis device and method based on graphene sensor |
| CN106950264A (en) * | 2017-05-17 | 2017-07-14 | 武汉中科志康生物科技有限公司 | A kind of Portable heavy metal detector and its detection method |
| CN108226260A (en) * | 2017-12-27 | 2018-06-29 | 潘彦伶 | A kind of heavy metal quick-check sensor of cosmetics |
| CN108490014A (en) * | 2018-03-26 | 2018-09-04 | 左文财 | Multifunctional hand-held heavy metal-polluted soil detector |
| CN110308191A (en) * | 2018-03-27 | 2019-10-08 | 瑞准科技股份有限公司 | Hand-held heavy metal rapid detection system |
| JP2019174465A (en) * | 2018-03-27 | 2019-10-10 | 瑞準科技股▲分▼有限公司 | Handheld heavy metal rapid measurement system |
| CN109632888A (en) * | 2018-12-27 | 2019-04-16 | 广州安食通信息科技有限公司 | A kind of food heavy metal detector and food heavy metal detection method |
| CN111579628A (en) * | 2020-06-24 | 2020-08-25 | 南方科技大学 | Arsenic analyzer, system device comprising same and application of device |
| CN112834587A (en) * | 2021-01-05 | 2021-05-25 | 长沙卡琳顿科技有限公司 | Portable electrochemical heavy metal detector |
| WO2024005719A1 (en) * | 2022-06-30 | 2024-01-04 | Agency For Science, Technology And Research | Analyser and computer-implemented method for pollutant detection |
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| C14 | Grant of patent or utility model | ||
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Address after: Room 20, building 68, No. 100081 South Road, Haidian District, Beijing, China Patentee after: Beijing zhiyunda Polytron Technologies Inc Address before: Room 20, building 68, No. 100081 South Road, Haidian District, Beijing, China Patentee before: Beijing Zhiyunda Technology Co., Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Portable rapid heavy metal detector Effective date of registration: 20161220 Granted publication date: 20150415 Pledgee: Huaxia Bank Beijing branch Wanliu Limited by Share Ltd Pledgor: Beijing zhiyunda Polytron Technologies Inc Registration number: 2016990001145 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180124 Granted publication date: 20150415 Pledgee: Huaxia Bank Beijing branch Wanliu Limited by Share Ltd Pledgor: Beijing zhiyunda Polytron Technologies Inc Registration number: 2016990001145 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Portable rapid heavy metal detector Effective date of registration: 20180228 Granted publication date: 20150415 Pledgee: Huaxia Bank Beijing branch Wanliu Limited by Share Ltd Pledgor: Beijing zhiyunda Polytron Technologies Inc Registration number: 2018990000152 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20191224 Granted publication date: 20150415 Pledgee: Huaxia Bank Beijing branch Wanliu Limited by Share Ltd Pledgor: Beijing zhiyunda Polytron Technologies Inc Registration number: 2018990000152 |