CN103487432A - Lead ion detection test paper, and preparation method and use method thereof - Google Patents
Lead ion detection test paper, and preparation method and use method thereof Download PDFInfo
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- CN103487432A CN103487432A CN201310441295.1A CN201310441295A CN103487432A CN 103487432 A CN103487432 A CN 103487432A CN 201310441295 A CN201310441295 A CN 201310441295A CN 103487432 A CN103487432 A CN 103487432A
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Abstract
The invention discloses lead ion detection test paper, and a preparation method and a use method thereof. The detection test paper is prepared through taking out filter paper after being infiltrated in a impregnation liquid and drying; the impregnation liquid comprises an impregnation liquid I consisting of dithizone and trichloromethane and an impregnation liquid II consisting of phenanthroline, potassium rhodanate and distilled water; in the detection test paper, dithizone is used as a chromogenic agent, a 50 mL 0.1 M trihydroxymethyl aminomethane solution and 14.7 mL 0.1 N hydrochloric acid are uniformly mixed, and then water is added to dilute till the volume is 100 mL, and an activator is prepared through uniformly mixing. The preparation is simple, the cost is low, the use is convenient, the environment is pollution-free, which is beneficial to environment protection, the test range is wide, professional are not required, and the lead ion detection test paper, the preparation method and the use method are especially suitable for quick field test on the lead content.
Description
Technical field
The present invention relates to a kind of lead ion detection technique, relate in particular to and a kind ofly using dithizone as lead ion Test paper of developer and preparation method thereof and using method.
Background technology
Lead contamination is one of five large heavy metal pollutions.In recent years, China's industry and communications fast development, lead contamination is on the rise, and has become large public hazards that affect health of people.
The main cause that causes chronic lead poisoning is environmental pollution, lead ore exploitation, plumbous smelting, foundry goods, water plate, welding, spraying, lead fume, the lead dust of the techniques such as accumulator manufacture, greasepaint, take leaded Chinese medicine, as Heixi Dan, minium, red lead with drink for a long time the wine in leaded tinpot, all can cause saturnism.Atmosphere pollution, water source and the crops such as leaded waste gas, waste water, waste residue, finally can jeopardize the mankind.
Saturnism be take inorganic saturnism as common, mainly damages nervous system, digestive system, hemopoietic system and kidney.In recent years, the impact of Effects of Lead Exposure Endocrine, reproductive system, fertility also draws attention.According to surveying and determination, when the blood in human body in lead concentration is crossed 30 micrograms/100 milliliter, just there will be the symptoms such as dizziness, muscle arthritis, insomnia, anaemia, stomachache, irregular menstruation.
Pollutant limit index regulation in state food, fruit lead is limited the quantity of and is limited the quantity of and limit the quantity of and limit the quantity of and limit the quantity of as 0.5mg/Kg for 0.05mg/Kg, fish lead for 5mg/Kg, sweet milk lead for 0.05mg/Kg, tealeaves lead for 0.1mg/Kg, fruit juice lead.
Therefore, lead content detects significant in fields such as commercial production, environment measuring, agriculture application, medical science, food securities.The detection method of lead content has extraction spectrophotometric method, GFAAS (graphite furnace atomic absorption spectrometry), flame atomic absorption spectrometry, potentiometric stripping etc. at present, these detection methods, not only require to have laboratory condition, and detection time is longer, operate loaded down with trivial details, expense is also higher, is unfavorable for realizing field quick detection.
Summary of the invention
In view of this, the purpose of this invention is to provide and a kind ofly using dithizone as lead ion Test paper of developer and preparation method thereof and using method, this Test paper is made simple, with low cost, easy to use, free from environmental pollution, environmental; Test specification is wide, without professional's operation, be specially adapted to quick Site Detection lead content.
The preparation method of lead ion Test paper of the present invention specifically comprises the following steps:
A. dithizone 0.2-0.5 gram is dissolved in 100 milliliters of methenyl cholorides, evenly mixed preparing maceration extract I;
B. Phen 2-5 gram is dissolved in 100 ml distilled waters, evenly mixed preparing solution I;
C. potassium rhodanide 5-10 gram is dissolved in 100 ml distilled waters, evenly mixed preparing solution II;
D. by the solution II mixed preparing maceration extract II of the solution I of described step b preparation and described step c preparation;
E. filter paper is immersed in the maceration extract I of described step a preparation after infiltrating 1 minute after taking out drying and make the test paper I;
F. described test paper I is immersed in the maceration extract II of described steps d preparation after infiltrating 1 minute after taking out again drying and make the colour developing test paper.
Further, also comprise step g. described colour developing test paper is adhesively fixed on lamelliform plastic substrate;
Further, in described step e in the drying of filter paper and step f the drying means of test paper I be at room temperature and dry;
Further, it is pure that the purity of described dithizone, methenyl choloride, Phen and potassium rhodanide is analysis.
The lead ion Test paper that the preparation method of lead ion Test paper of the present invention makes, described Test paper comprises that adopting filter paper to take out after infiltrating in the maceration extract I be comprised of dithizone and methenyl choloride after drying infiltrates in the maceration extract II be comprised of Phen, potassium rhodanide and distilled water again takes out the colour developing test paper made after drying.
Further, described Test paper also comprises for fixing and carry the substrate of described colour developing test paper, takes out after described colour developing test paper infiltrates in described maceration extract I after drying infiltrates rear taking-up drying again in described maceration extract II and is fixed in described substrate;
Further, described substrate is PVC or PET plastic tab;
Further, described colour developing test paper is adhesively fixed in substrate;
Further, at least one side of described substrate is along extending to colour developing test paper outside.
The using method of the lead ion Test paper that the preparation method of lead ion Test paper of the present invention makes, immerse described colour developing test paper in leaded liquid to be measured and take out after 1～2 second; Again to this colour developing test paper drip 1 by 50 milliliters of 0.1M tris solutions be diluted with water to 100mL after 14.7 milliliters of 0.1N hydrochloric acid mix and mix the activator be mixed with; The colour developing test paper becomes redness; Again by this colour developing test paper and standard color card contrast; Realize the detection to lead content according to the depth of color.
The invention has the beneficial effects as follows: lead ion Test paper of the present invention and preparation method thereof and using method, using dithizone as developer, cooperation by 50 milliliters of 0.1M tris solutions be diluted with water to 100mL after 14.7 milliliters of 0.1N hydrochloric acid mix and mix the activator be mixed with and use, this Test paper is made simple, with low cost, easy to use, free from environmental pollution, environmental; Test specification is wide, without professional's operation, be specially adapted to quick Site Detection lead content.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Embodiment
Fig. 1 is structural representation of the present invention, as shown in the figure:
Embodiment 1: the preparation method of the lead ion Test paper of the present embodiment specifically comprises the following steps:
A. dithizone 0.2 gram is dissolved in 100 milliliters of methenyl cholorides, evenly mixed preparing maceration extract I;
C. potassium rhodanide 5 grams are dissolved in 100 ml distilled waters, evenly mixed preparing solution II;
D. by the solution II mixed preparing maceration extract II of the solution I of described step b preparation and described step c preparation;
E. filter paper is immersed in the maceration extract I of described step a preparation after infiltrating 1 minute after taking out drying and make the test paper I, and the test paper I is stored in to light tight dark place; Described filter paper can be qualitative filter paper or quantitative filter paper, all can realize the object of the invention;
F. described test paper I is immersed in the maceration extract II of described steps d preparation after infiltrating 1 minute after taking out again drying and make colour developing test paper 2, and the test paper 2 that will develop the color is stored in light tight dark place; This colour developing test paper 2 is usingd dithizone as developer, immerses containing taking out after 1～2 second in lead solution; Again to this colour developing test paper 2 drip 1 by 50 milliliters of 0.1M tris solutions be diluted with water to 100mL after 14.7 milliliters of 0.1N hydrochloric acid mix and mix after the activator be mixed with the test paper 2 that develops the color and become redness, increase along with lead concentration in liquid to be measured, aobvious color is progressively deepened as peony from light red, develop the color clear, obvious, then by this colour developing test paper 2 and standard color card contrast; Realize the detection to lead content according to the depth of color, be applicable to quick Site Detection lead content.
In the present embodiment, also comprise step g. described colour developing test paper 2 is adhesively fixed on lamelliform plastic substrate 1, putting into the packaging bag of lucifuge protection against the tide preserves, make a kind of plumbous test paper that detects, by substrate 1 be convenient to develop the color taking of test paper 2 and store and be beneficial to the chemical property that keeps colour developing test paper 2 is set.
In the present embodiment, in described step e in the drying of filter paper and step f the drying means of test paper I be at room temperature and dry, make simple, with low cost.
In the present embodiment, it is pure that the purity of described dithizone, methenyl choloride, Phen and potassium rhodanide is analysis.
Embodiment 2: the preparation method of the lead ion Test paper of the present embodiment specifically comprises the following steps:
A. dithizone 0.5 gram is dissolved in 100 milliliters of methenyl cholorides, evenly mixed preparing maceration extract I;
B. Phen 5 grams are dissolved in 100 ml distilled waters, evenly mixed preparing solution I;
C. potassium rhodanide 10 grams are dissolved in 100 ml distilled waters, evenly mixed preparing solution II;
D. by the solution II mixed preparing maceration extract II of the solution I of described step b preparation and described step c preparation;
E. filter paper is immersed in the maceration extract I of described step a preparation after infiltrating 1 minute after taking out drying and make the test paper I, and the test paper I is stored in to light tight dark place; Described filter paper can be qualitative filter paper or quantitative filter paper, all can realize the object of the invention;
F. described test paper I is immersed in the maceration extract II of described steps d preparation after infiltrating 1 minute after taking out again drying and make colour developing test paper 2, and the test paper 2 that will develop the color is stored in light tight dark place; This colour developing test paper 2 is usingd dithizone as developer, immerses containing taking out after 1～2 second in lead solution; Again to this colour developing test paper 2 drip 1 by 50 milliliters of 0.1M tris solutions be diluted with water to 100mL after 14.7 milliliters of 0.1N hydrochloric acid mix and mix after the activator be mixed with the test paper 2 that develops the color and become redness, increase along with lead concentration in liquid to be measured, aobvious color is progressively deepened as peony from light red, develop the color clear, obvious, then by this colour developing test paper 2 and standard color card contrast; Realize the detection to lead content according to the depth of color, be applicable to quick Site Detection lead content.
In the present embodiment, also comprise step g. described colour developing test paper 2 is adhesively fixed on lamelliform plastic substrate 1, putting into the packaging bag of lucifuge protection against the tide preserves, make a kind of plumbous test paper that detects, by substrate 1 be convenient to develop the color taking of test paper 2 and store and be beneficial to the chemical property that keeps colour developing test paper 2 is set.
In the present embodiment, in described step e in the drying of filter paper and step f the drying means of test paper I be at room temperature and dry, make simple, with low cost.
In the present embodiment, it is pure that the purity of described dithizone, methenyl choloride, Phen and potassium rhodanide is analysis.
Embodiment 3: the preparation method of the lead ion Test paper of the present embodiment specifically comprises the following steps:
A. dithizone 0.35 gram is dissolved in 100 milliliters of methenyl cholorides, evenly mixed preparing maceration extract I;
B. Phen 3.5 grams are dissolved in 100 ml distilled waters, evenly mixed preparing solution I;
C. potassium rhodanide 7.5 grams are dissolved in 100 ml distilled waters, evenly mixed preparing solution II;
D. by the solution II mixed preparing maceration extract II of the solution I of described step b preparation and described step c preparation;
E. filter paper is immersed in the maceration extract I of described step a preparation after infiltrating 1 minute after taking out drying and make the test paper I, and the test paper I is stored in to light tight dark place; Described filter paper can be qualitative filter paper or quantitative filter paper, all can realize the object of the invention;
F. described test paper I is immersed in the maceration extract II of described steps d preparation after infiltrating 1 minute after taking out again drying and make colour developing test paper 2, and the test paper 2 that will develop the color is stored in light tight dark place; This colour developing test paper 2 is usingd dithizone as developer, immerses containing taking out after 1～2 second in lead solution; Again to this colour developing test paper 2 drip 1 by 50 milliliters of 0.1M tris solutions be diluted with water to 100mL after 14.7 milliliters of 0.1N hydrochloric acid mix and mix after the activator be mixed with the test paper 2 that develops the color and become redness, increase along with lead concentration in liquid to be measured, aobvious color is progressively deepened as peony from light red, develop the color clear, obvious, then by this colour developing test paper 2 and standard color card contrast; Realize the detection to lead content according to the depth of color, be applicable to quick Site Detection lead content.
In the present embodiment, also comprise step g. described colour developing test paper 2 is adhesively fixed on lamelliform plastic substrate 1, putting into the packaging bag of lucifuge protection against the tide preserves, make a kind of plumbous test paper that detects, by substrate 1 be convenient to develop the color taking of test paper 2 and store and be beneficial to the chemical property that keeps colour developing test paper 2 is set.
In the present embodiment, in described step e in the drying of filter paper and step f the drying means of test paper I be at room temperature and dry, make simple, with low cost.
In the present embodiment, it is pure that the purity of described dithizone, methenyl choloride, Phen and potassium rhodanide is analysis.
Embodiment 4: the lead ion Test paper of the present embodiment, by embodiment 1, the preparation method of embodiment 2 or the described lead ion Test paper of embodiment 3 makes, described Test paper comprises and adopts filter paper to infiltrate afterwards the taking-up drying again by Phen in the maceration extract I is comprised of dithizone and methenyl choloride, take out the colour developing test paper 2 made after drying after infiltrating in the maceration extract II that potassium rhodanide and distilled water form, described filter paper can be qualitative filter paper or quantitative filter paper, all can realize the object of the invention, this colour developing test paper 2 is usingd dithizone as developer, while detecting lead ion, colour developing is clear, obviously.
In the present embodiment, described Test paper also comprises for fixing and carry the substrate 1 of described colour developing test paper 2, described colour developing test paper 2 infiltrates rear taking-up drying and is fixed in described substrate 1 after the taking-up drying after infiltration again in described maceration extract II in described maceration extract I, i.e. the rear drying of taking out of colour developing test paper 2 parts of Test paper infiltration in the maceration extract I of dithizone and methenyl choloride composition makes after the rear taking-up of infiltration drying in the maceration extract II be comprised of Phen, potassium rhodanide and distilled water again; By substrate 1 be convenient to develop the color taking of test paper 2 and store and be beneficial to the chemical property that keeps colour developing test paper 2 is set.
In the present embodiment, described substrate 1 is PVC or PET plastic tab, and material source is wide, with low cost, and PVC or PET plastic tab stable chemical performance are not fragile.
In the present embodiment, described colour developing test paper 2 is adhesively fixed in substrate 1, is convenient to manufacture.
In the present embodiment, at least one side of described substrate 1 is along extending to colour developing test paper 2 outsides, and its extension can be used for hand-held, rational in infrastructure, is convenient to the use of Test paper.
Embodiment 5: the using method of the lead ion Test paper that the preparation method of lead ion Test paper of the present invention makes, immerse described colour developing test paper 2 in leaded liquid to be measured and take out after 1～2 second; Again to this colour developing test paper 2 drip 1 by 50 milliliters of 0.1M tris solutions be diluted with water to 100mL after 14.7 milliliters of 0.1N hydrochloric acid mix and mix the activator be mixed with; Colour developing test paper 2 becomes redness; Again by this colour developing test paper 2 and standard color card contrast; Realize the detection to lead content according to the depth of color, colour developing test paper 2 show color and progressively deepen as peony from light red along with the increase of lead concentration in liquid to be measured, test specification is wide, without the professional, operate, and is specially adapted to quick Site Detection lead content.
Finally explanation is, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (10)
1. the preparation method of a lead ion Test paper is characterized in that: specifically comprise the following steps:
A. dithizone 0.2-0.5 gram is dissolved in 100 milliliters of methenyl cholorides, evenly mixed preparing maceration extract I;
B. Phen 2-5 gram is dissolved in 100 ml distilled waters, evenly mixed preparing solution I;
C. potassium rhodanide 5-10 gram is dissolved in 100 ml distilled waters, evenly mixed preparing solution II;
D. by the solution II mixed preparing maceration extract II of the solution I of described step b preparation and described step c preparation;
E. filter paper is immersed in the maceration extract I of described step a preparation after infiltrating 1 minute after taking out drying and make the test paper I;
F. described test paper I is immersed in the maceration extract II of described steps d preparation after infiltrating 1 minute after taking out again drying and make the colour developing test paper.
2. the preparation method of lead ion Test paper according to claim 1, is characterized in that: also comprise step g. described colour developing test paper is adhesively fixed on lamelliform plastic substrate.
3. the preparation method of lead ion Test paper according to claim 2 is characterized in that: in described step e in the drying of filter paper and step f the drying means of test paper I be at room temperature and dry.
4. the preparation method of lead ion Test paper according to claim 1 is characterized in that: the purity of described dithizone, methenyl choloride, Phen and potassium rhodanide be analyze pure.
5. the lead ion Test paper made by the preparation method of the described lead ion Test paper of arbitrary claim in claim 1 to 4 is characterized in that: described Test paper comprises and adopts filter paper to take out the dry colour developing test paper made after rear taking-up drying that infiltrates again after infiltrating in the maceration extract I is comprised of dithizone and methenyl choloride in the maceration extract II is comprised of Phen, potassium rhodanide and distilled water.
6. lead ion Test paper according to claim 5, it is characterized in that: described Test paper also comprises for fixing and carry the substrate of described colour developing test paper, takes out after described colour developing test paper infiltrates in described maceration extract I after drying infiltrates rear taking-up drying again in described maceration extract II and is fixed in described substrate.
7. lead ion Test paper according to claim 6, it is characterized in that: described substrate is PVC or PET plastic tab.
8. lead ion Test paper according to claim 7, it is characterized in that: described colour developing test paper is adhesively fixed in substrate.
9. lead ion Test paper according to claim 8 is characterized in that: at least one side of described substrate is along extending to colour developing test paper outside.
10. the using method of the lead ion Test paper that the preparation method of the described lead ion Test paper of arbitrary claim in claims 1 to 3 makes is characterized in that: described colour developing test paper is immersed in leaded liquid to be measured and takes out after 1～2 second; Again to this colour developing test paper drip 1 by 50 milliliters of 0.1M tris solutions be diluted with water to 100mL after 14.7 milliliters of 0.1N hydrochloric acid mix and mix the activator be mixed with; The colour developing test paper becomes redness; Again by this colour developing test paper and standard color card contrast; Realize the detection to lead content according to the depth of color.
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Cited By (6)
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| CN104048959A (en) * | 2014-06-10 | 2014-09-17 | 华中科技大学 | Ultra-trace lead-cadmium ion detection method and detection test strip |
| CN105021603A (en) * | 2015-07-06 | 2015-11-04 | 中华人民共和国潍坊出入境检验检疫局 | Rapid screening detection method of lead content in household paper |
| CN105548170A (en) * | 2016-01-08 | 2016-05-04 | 昆明泊银科技有限公司 | Lead ion detection test paper and preparing method and using method thereof |
| CN106525828A (en) * | 2016-10-31 | 2017-03-22 | 百奥森（江苏）食品安全科技有限公司 | Lead ion detection test paper and production method thereof |
| CN108548814A (en) * | 2018-04-19 | 2018-09-18 | 长春万成生物电子工程有限公司 | The detection method of bromine content in Test paper of bromine content and preparation method thereof and water |
| CN108760984A (en) * | 2018-05-08 | 2018-11-06 | 河南省林业科学研究院 | It can be used for the Chinese prickly ash quality detecting method of Chinese prickly ash Adulteration identification |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048959A (en) * | 2014-06-10 | 2014-09-17 | 华中科技大学 | Ultra-trace lead-cadmium ion detection method and detection test strip |
| CN105021603A (en) * | 2015-07-06 | 2015-11-04 | 中华人民共和国潍坊出入境检验检疫局 | Rapid screening detection method of lead content in household paper |
| CN105548170A (en) * | 2016-01-08 | 2016-05-04 | 昆明泊银科技有限公司 | Lead ion detection test paper and preparing method and using method thereof |
| CN105548170B (en) * | 2016-01-08 | 2018-08-07 | 昆明泊银科技有限公司 | A kind of lead ion Test paper and preparation method thereof and application method |
| CN106525828A (en) * | 2016-10-31 | 2017-03-22 | 百奥森（江苏）食品安全科技有限公司 | Lead ion detection test paper and production method thereof |
| CN108548814A (en) * | 2018-04-19 | 2018-09-18 | 长春万成生物电子工程有限公司 | The detection method of bromine content in Test paper of bromine content and preparation method thereof and water |
| CN108760984A (en) * | 2018-05-08 | 2018-11-06 | 河南省林业科学研究院 | It can be used for the Chinese prickly ash quality detecting method of Chinese prickly ash Adulteration identification |
| CN108760984B (en) * | 2018-05-08 | 2019-06-07 | 河南省林业科学研究院 | It can be used for the Chinese prickly ash quality detecting method of Chinese prickly ash Adulteration identification |
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Application publication date: 20140101 |