CN1687754A - Test paper for detecting heavy metal lead, cadmium, and mercury rapidly, preparation method and application - Google Patents
Test paper for detecting heavy metal lead, cadmium, and mercury rapidly, preparation method and application Download PDFInfo
- Publication number
- CN1687754A CN1687754A CN 200510013380 CN200510013380A CN1687754A CN 1687754 A CN1687754 A CN 1687754A CN 200510013380 CN200510013380 CN 200510013380 CN 200510013380 A CN200510013380 A CN 200510013380A CN 1687754 A CN1687754 A CN 1687754A
- Authority
- CN
- China
- Prior art keywords
- test paper
- paper
- preparation
- test
- cadmium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The invention is the test paper, the preparation and the application of the fast testing heavy metallic lead, cadmium and mercury. The test paper adopts the quantitative filter paper and is marinated by 0.08-0.12% malachite green color-showing agent for 20-30 minutes and airs naturally. The application is that it processes the water and the vegetable samples and orderly adds the 0.10-0.15mol/L iodine iodide, 0.40-0.50 mol/L oil of vitriol in the 1mL alcoholic solution with 2% concentration and mixes them; puts the test paper into the PVC plastic slot and drops 30 muL test-waiting solution on the test paper to reflect for 90-180 seconds in the sun or 360-600 seconds in non-sunshine and compares it to the standard color phase. The test paper can fast test the water sample and properly treat the polluted vegetables, which protects the environment and ensure the safety of consumers.
Description
[technical field]: the present invention relates to a kind of preparation of test paper and technical field of sample detection of detecting, particularly detect preparation method of test paper of heavy metal lead, cadmium, and mercury etc. and the application in detection thereof.
[background technology]: water is a kind of valuable natural resources, is the indispensable material of human lives, animal and plant growth and industrial and agricultural production.Current, China's water resource is being faced with the most serious since the dawn of human civilization pollution problem, not only causes enormous economic loss, the serious threat drinking water source, and greatly affect the sustainable development of people's healthy and national economy.The heavy metal of polluted-water has mercury, cadmium, lead, chromium, vanadium, cobalt, barium etc.The toxicity maximum of mercury wherein, lead, cadmium, chromium also have bigger harm, and arsenic often is listed in heavy metal because toxicity is similar to heavy metal.Heavy metal so that various chemical states or chemical form exist will retain after entering the environment or the ecosystem, accumulates and move, and works the mischief.Heavy metal as discharging with waste water even concentration is little, also can accumulate in algae and bed mud, and by the body surface of fish and shellfish absorption, produce food chain and concentrate, thus the public hazards of causing.
It is very general that at present China uses rural sewage disposal farm, and farmland and vegetable field soil and agricultural product are subjected to heavy metal pollution in various degree, produces cadmium rice as the sewage irrigated area, and vegetables heavy metal lead, mercury pollution are serious.Because it is heavy metal pollution has chronicity, disguise, therefore very big to human health damage; Simultaneously, a large amount of surface water and underground water are polluted by harmful heavy metal, cause having water to use, and drinking water source, town and country and economic sustainable development in serious threat.
At present, the analytical approach commonly used to heavy metal lead, cadmium, and mercury in water body, the vegetables mainly contains: (1) atomic absorption luminosity method; (2) atomic fluorescence method; (3) colourimetry; (4) anodic stripping voltammetry; (5) oscilloscopic polarography; (6) EDTA titrimetry etc., but these methods all adopt complex instrument to finish, and are not suitable for field quick detection.
At the problems referred to above, the patent of invention that State Intellectual Property Office is open on November 26th, 2003, on February 16th, 2005, name Granted publication, that finished by this seminar was called " a kind of plumbous detection test paper and preparation method thereof " obtains part and solves, but this patent detectability is still higher, and can only detect plumbous a kind of material, its use is subjected to great limitation.
[summary of the invention]: the present invention seeks to solve existing analytical approach commonly used and be not suitable for the problem that field quick detection or use are subjected to certain limitation, provide a kind of scope of application wider fast detecting heavy metal lead, cadmium, and mercury test paper, preparation method and application to heavy metal lead, cadmium, and mercury in water body, the vegetables.
The test paper of fast detecting heavy metal lead, cadmium, and mercury provided by the invention, be adopt the middling speed quantitative filter paper, via the 0.08%0.12% malachite green chromogenic reagent solution soak at room temperature of deionized water preparation, make after drying naturally.
Concrete preparation method comprises successively:
---chromogenic reagent solution preparation: with deionized water malachite green being mixed with concentration is 0.08%～0.12% chromogenic reagent solution;
---filter paper soaks: the middling speed quantitative filter paper is put into the chromogenic reagent solution of step preparation, and normal temperature, and make filter paper can both fully be soaked 20～30 minutes time up and down;
---drying: the filter paper that will go up after soaking in the step takes out, and dries naturally;
---finished product and preservation: the filter paper after upward drying in the step is the test paper finished product of fast detecting heavy metal lead, cadmium, and mercury, and the test paper finished product is sheared the test-paper of growth 8mm, wide 6mm, places in the Brown Glass Brown glass bottles and jars only, and shady and cool drying place preserves.
The concrete applying step of this test paper in detection comprises:
---testing sample solution is prepared: after water sample to be measured or vegetable sample are cleared up processing, in solution to be measured, add ascorbic acid, potassium iodide, the concentrated sulphuric acid successively, make its concentration be respectively 0.003～0.010mol/L, 0.10～0.15mol/L and 0.40～0.50mol/L, to be measured behind the mixing;
---detect: the test paper of preparation is placed in the white PVC plastic channel of long 9mm, wide 7mm and dark 2mm, drawing 3 μ L drips of solution to be measured with micro-liquid getting device is added on the test paper, placing response is 90～180 seconds under the daylight, or placing response 360～600 seconds under the non-daylight, and is more quantitative with the standard color range.
Advantage of the present invention and good effect: the present invention has prepared a kind of quick, sensitive, simple lead, cadmium, and mercury ion detection test paper of use; the lead, cadmium, and mercury ion that pollutes in fast detecting environmental water sample and the agricultural product such as vegetables at the scene through suitably handling; reach the protection environment; promote the safety in production of non-polluted farm product, ensure the purpose of health.Ascorbic acid in detect using does not participate in the chromogenic reaction of Pb (II) Cd (II) Hg (II) and developer, but has vital role in color development system, and a certain amount of ascorbic acid both can have been protected I～not oxidized, can shelter the interference of other heavy metal ion again; Pb (II) Cd (II) Hg (II) is highly stable with the complex anion of excessive I～formation, and easy and malachite green forms green ternary complexes, has improved the sensitivity and the selectivity of test paper reaction; After the reaction of sulfuric acid and test paper, blank displaing yellow contains lead, cadmium, and mercury and shows green in the liquid to be measured, and shade and lead, cadmium, and mercury concentration are proportionate.
[embodiment]:
Example example 1
The preparation of test paper comprises:
---chromogenic reagent solution preparation: with deionized water malachite green being mixed with concentration is 0.10% chromogenic reagent solution;
---filter paper soaks: the middling speed quantitative filter paper is put into the chromogenic reagent solution of step preparation, and soak at room temperature, and the filter paper that constantly overturns keep filter paper can both fully be soaked 20 minutes time up and down;
---drying: the filter paper that will go up after soaking in the step takes out, and dries naturally;
---finished product and preservation: the filter paper after upward drying in the step is the test paper finished product of fast detecting heavy metal lead, cadmium, and mercury, and the test paper finished product is sheared the test-paper of growth 8mm, wide 6mm, places in the Brown Glass Brown glass bottles and jars only, and shady and cool drying place preserves.9～12 months holding times.
Example example 2
According to last routine preparation method, malachite green solution concentration gets 0.08%, and soak time was got 25 minutes, and all the other conditions are constant, make the test paper of fast detecting heavy metal lead, cadmium, and mercury.
Example example 3
Measure 25mL water sample to be measured, in the 150mL conical flask, add 15～20mL red fuming nitric acid (RFNA) and perchloric acid (3+1) acid mixture, heating is 240 minutes on electric hot plate, and it is in slight boiling condition its chien shih, places cooling thereafter.Add ascorbic acid, potassium iodide and the concentrated sulphuric acid in the solution to be measured to above-mentioned clearing up successively, make its concentration be respectively 0.006mol/L, 0.13mol/L, 0.45 mol/L, to be measured behind the mixing.The test-paper of preparation is placed in the white PVC plastic channel of long 9mm, wide 7mm and dark 2mm, drawing 30 μ L mixed solution to be measured with micro-liquid getting device is added drop-wise on the test-paper, placing response is 150 seconds under the daylight, or placing response after 480 seconds under the non-daylight, and is more quantitative with the standard color range.
Example example 4
Take by weighing about 25.0g pakchoi in the 150mL conical flask, add 15～20mL red fuming nitric acid (RFNA) and perchloric acid (3+1) acid mixture, heating is 300 minutes on electric hot plate, and it is in slight boiling condition its chien shih, places cooling thereafter.Add ascorbic acid, potassium iodide and the concentrated sulphuric acid in the solution to be measured to above-mentioned clearing up successively, make its concentration be respectively 0.008mol/L, 0.15mol/L, 0.48 mol/L, to be measured behind the mixing.The test-paper of preparation is placed in the white PVC plastic channel of long 9mm, wide 7mm and dark 1mm, accurately drawing 30 μ L mixed solution to be measured with micro-liquid getting device is added drop-wise on the test-paper, placing response is 180 seconds under the daylight, or placing response after 510 seconds under the non-daylight, and is more quantitative with the standard color range.
Claims (4)
1, a kind of test paper of fast detecting heavy metal lead, cadmium, and mercury, it is characterized in that this test paper adopt quantitative filter paper, via the 0.08%-0.12% malachite green chromogenic reagent solution soak at room temperature of deionized water preparation, make after drying naturally.
2, the preparation method of the described test paper of a kind of claim 1 is characterized in that this method comprises successively:
---chromogenic reagent solution preparation: with deionized water malachite green being mixed with concentration is 0.08% ~ 0.12% chromogenic reagent solution;
---filter paper soaks: quantitative filter paper is put into the chromogenic reagent solution of step preparation, and normal temperature, and make filter paper can both fully be soaked time 20-30 minute up and down;
---drying: the filter paper that will go up after soaking in the step takes out, and dries naturally;
---finished product: the filter paper after upward drying in the step is the test paper finished product of fast detecting heavy metal lead, cadmium, and mercury.
3, according to the preparation method of the described test paper of claim 2, it is characterized in that quantitative filter paper is the middling speed quantitative filter paper, the test paper finished product is sheared the test-paper of growth 8mm, wide 6mm, places in the Brown Glass Brown glass bottles and jars only, and shady and cool dry place preserves.
4, a kind of detection of test paper of fast detecting heavy metal lead, cadmium, and mercury is used, and it is characterized in that this detection applying step comprises:
---testing sample solution is prepared: after water sample to be measured or vegetable sample are cleared up processing, in solution to be measured, add ascorbic acid, potassium iodide, the concentrated sulphuric acid successively, make its concentration be respectively 0.001-0.012mol/L, 0.10-0.16mol/L and 0.40-0.50mol/L, to be measured behind the mixing;
---detect: the test paper of preparation is placed in the white PVC plastic channel of long 9mm, wide 7mm and dark 1mm, drawing 30 μ L drips of solution to be measured with micro-liquid getting device is added on the test paper, placing response 90-180 is after second under the daylight, or placing response 360-600 second under the non-daylight, with the contrast of standard color range, obtain testing result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510013380 CN1687754A (en) | 2005-04-29 | 2005-04-29 | Test paper for detecting heavy metal lead, cadmium, and mercury rapidly, preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510013380 CN1687754A (en) | 2005-04-29 | 2005-04-29 | Test paper for detecting heavy metal lead, cadmium, and mercury rapidly, preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1687754A true CN1687754A (en) | 2005-10-26 |
Family
ID=35305796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510013380 Pending CN1687754A (en) | 2005-04-29 | 2005-04-29 | Test paper for detecting heavy metal lead, cadmium, and mercury rapidly, preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1687754A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487432A (en) * | 2013-09-25 | 2014-01-01 | 昆明泊银科技有限公司 | Lead ion detection test paper, and preparation method and use method thereof |
| CN103760154A (en) * | 2013-09-12 | 2014-04-30 | 天津凯英科技发展有限公司 | Rapid heavy metal detection method, and detection test paper and preparation method thereof |
| CN103776823A (en) * | 2013-09-12 | 2014-05-07 | 天津凯英科技发展有限公司 | Heavy-metal detection method, as well as test paper and preparation method thereof |
| CN103776822A (en) * | 2013-09-12 | 2014-05-07 | 天津凯英科技发展有限公司 | Rapid heavy-metal detection method, as well as test paper and preparation method thereof |
| CN104316523A (en) * | 2014-10-31 | 2015-01-28 | 长安大学 | Method for rapidly detecting cadmium content in solid waste |
| CN105548056A (en) * | 2015-12-22 | 2016-05-04 | 天津凯英科技发展有限公司 | Method for detecting contents of metal lead ions in samples |
| CN106872454A (en) * | 2017-01-13 | 2017-06-20 | 上海市质量监督检验技术研究院 | The screening technique of total lead content in a kind of textile |
| US10151699B2 (en) | 2015-10-12 | 2018-12-11 | Hong Kong Baptist University | Development of lead ion testing paper with naked-eye observable readout for ten min on-site detection |
| CN109187526A (en) * | 2018-09-21 | 2019-01-11 | 广东省肇庆市质量计量监督检测所 | A kind of method that cadmium residual quantity in reality is started in quick detection |
| CN109612984A (en) * | 2018-11-28 | 2019-04-12 | 浙江省纺织测试研究院 | Detect the preparation method and detection method of the changeable colour cloth of heavy metal ion in water |
| CN110006880A (en) * | 2019-03-20 | 2019-07-12 | 浙江农林大学 | A kind of develop the color for direct-reading quickly detects compound and the application of malachite green |
-
2005
- 2005-04-29 CN CN 200510013380 patent/CN1687754A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760154A (en) * | 2013-09-12 | 2014-04-30 | 天津凯英科技发展有限公司 | Rapid heavy metal detection method, and detection test paper and preparation method thereof |
| CN103776823A (en) * | 2013-09-12 | 2014-05-07 | 天津凯英科技发展有限公司 | Heavy-metal detection method, as well as test paper and preparation method thereof |
| CN103776822A (en) * | 2013-09-12 | 2014-05-07 | 天津凯英科技发展有限公司 | Rapid heavy-metal detection method, as well as test paper and preparation method thereof |
| CN103487432A (en) * | 2013-09-25 | 2014-01-01 | 昆明泊银科技有限公司 | Lead ion detection test paper, and preparation method and use method thereof |
| CN104316523A (en) * | 2014-10-31 | 2015-01-28 | 长安大学 | Method for rapidly detecting cadmium content in solid waste |
| US10151699B2 (en) | 2015-10-12 | 2018-12-11 | Hong Kong Baptist University | Development of lead ion testing paper with naked-eye observable readout for ten min on-site detection |
| CN105548056A (en) * | 2015-12-22 | 2016-05-04 | 天津凯英科技发展有限公司 | Method for detecting contents of metal lead ions in samples |
| CN105548056B (en) * | 2015-12-22 | 2018-09-18 | 天津凯英科技发展股份有限公司 | A method of detection Gold Samples category lead ion content |
| CN106872454A (en) * | 2017-01-13 | 2017-06-20 | 上海市质量监督检验技术研究院 | The screening technique of total lead content in a kind of textile |
| CN109187526A (en) * | 2018-09-21 | 2019-01-11 | 广东省肇庆市质量计量监督检测所 | A kind of method that cadmium residual quantity in reality is started in quick detection |
| CN109612984A (en) * | 2018-11-28 | 2019-04-12 | 浙江省纺织测试研究院 | Detect the preparation method and detection method of the changeable colour cloth of heavy metal ion in water |
| CN110006880A (en) * | 2019-03-20 | 2019-07-12 | 浙江农林大学 | A kind of develop the color for direct-reading quickly detects compound and the application of malachite green |
| CN110006880B (en) * | 2019-03-20 | 2021-05-25 | 浙江农林大学 | Compound for direct-reading chromogenic rapid detection of malachite green and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1687754A (en) | Test paper for detecting heavy metal lead, cadmium, and mercury rapidly, preparation method and application | |
| Jiang et al. | Influence of dissolved organic matter (DOM) characteristics on dissolved mercury (Hg) species composition in sediment porewater of lakes from southwest China | |
| Steinberg et al. | Characterisation of an optical sensor membrane based on the metal ion indicator Pyrocatechol Violet | |
| CN1687753A (en) | Test paper for detecting heavy metal cadmium rapidly, preparation method and application | |
| Safavi et al. | A novel optical sensor for uranium determination | |
| Zhang et al. | Is vermicompost the possible in situ sorbent? Immobilization of Pb, Cd and Cr in sediment with sludge derived vermicompost, a column study | |
| Xie et al. | Spatial and temporal variations of bulk and colloidal dissolved organic matter in a large anthropogenically perturbed estuary | |
| CN1687752A (en) | Test paper for detecting heavy metal mercury rapidly, preparation method and application | |
| Dang et al. | Sedimentary dynamics of coastal organic matter: an assessment of the porewater size/reactivity model by spectroscopic techniques | |
| Safavi et al. | Design of a copper (II) optode based on immobilization of dithizone on a triacetylcellulose membrane | |
| Chen et al. | Effects of sampling methods on the quantity and quality of dissolved organic matter in sediment pore waters as revealed by absorption and fluorescence spectroscopy | |
| Silva et al. | Exploiting Mn (III)/EDTA complex in a flow system with solenoid micro-pumps coupled to long pathlength spectrophotometry for fast manganese determination | |
| Tavallali et al. | Developing a new method of 4-(2-pyridylazo)-resorcinol immobilization on triacetylcellulose membrane for selective determination of Ga3+ in water samples | |
| Ensafi et al. | Highly selective optical-sensing film for lead (II) determination in water samples | |
| Pyrzyńska et al. | Flow-injection speciation of aluminium | |
| Tavallali et al. | A highly selective optode for determination of Hg (II) by a modified immobilization of indigo carmine on a triacetylcellulose membrane | |
| CN106442448B (en) | A kind of method of quick detection sulphion | |
| Santos et al. | Screening of cadmium and lead in potentially contaminated waters using a spectrophotometric sequential injection lab-on-valve methodology | |
| Lu et al. | Spectrophotometric determination of polyacrylamide in waters containing dissolved organic matter | |
| Yusof et al. | A flow cell optosensor for lead based on immobilized gallocynin in chitosan membrane | |
| Wang et al. | Visualization of microcystin-LR and sulfides in plateau lakes | |
| Uraisin et al. | Kinetic-spectrophotometric method for the determination of trace amounts of bromide in seawater | |
| Kiso et al. | Visual determination of nitrite and nitrate in waters by color band formation method | |
| Marumo et al. | Advanced gel electrophoresis techniques reveal heterogeneity of humic acids based on molecular weight distributions of kinetically inert Cu2+-Humate Complexes | |
| Mulec et al. | Study of interferences and procedures for their removal in the spectrophotometric determination of ammonium and selected anions in coloured wastewater samples |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |