CN111208126A - Method for detecting lead in wall panel - Google Patents
Method for detecting lead in wall panel Download PDFInfo
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- CN111208126A CN111208126A CN202010079460.3A CN202010079460A CN111208126A CN 111208126 A CN111208126 A CN 111208126A CN 202010079460 A CN202010079460 A CN 202010079460A CN 111208126 A CN111208126 A CN 111208126A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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Abstract
The invention discloses a method for detecting whether a wall panel contains lead. Respectively filling the solution A and the solution B into two dropping bottles, firstly dropping 1-2 drops of the solution A onto a wall panel, then adding 1-2 drops of the solution B onto the same position of the wall panel, wiping off the dropped solution A and the dropped solution B after 2-5 minutes, and if black marks appear at the positions of the solution A and the solution B dropped onto the wall panel, indicating that the wall panel contains lead, and if the marks are black when the lead content is higher, indicating that the marks are black when the solution A and the solution B are not black when the solution A and the solution B are dropped onto the wall panel, indicating that the wall panel does not contain lead. The solution A is 0.15mol/L sulfuric acid solution, and the solution B is 0.05mol/L sodium sulfide solution. The method of the invention has the following advantages: the test solution is stable, easy to store and carry; the method has the advantages of low cost, simple operation, obvious and reliable phenomenon, capability of realizing the inspection at any time and any place, and convenience for large-scale popularization.
Description
Technical Field
The invention belongs to the field of environmental protection, and particularly relates to a method for detecting whether a wall panel contains lead or not.
Background
It is well known that lead pollutes the environment and harms human health, and infants are the main victims of lead pollution. According to the investigation of the Chinese disease prevention and control center, 1/3 children still take excessive lead in China at present, and the household decoration article pollution is the most common lead pollution source for children. Along with the improvement of the requirements of people on interior decoration and finishing, the integrated wallboard (indoor wall panel) is generally adopted by the home decoration industry with the advantages of heat preservation, heat insulation, sound insulation, fire prevention, moisture prevention, high strength, easiness in installation, easiness in scrubbing, environmental protection and the like. However, most of the integrated wallboards in the market nowadays are made of PVC (polyvinyl chloride) as a main material, and lead-containing raw materials are added by many manufacturers in the manufacturing process, so that lead in the wallboard is too high, and hidden troubles are brought to the health of people. Therefore, the method can be used for detecting whether the decoration plates such as the wall panel and the like contain lead, so that lead pollution of thousands of households can be avoided.
Disclosure of Invention
The invention aims to provide a method for detecting whether a panel contains lead.
The method comprises the following specific steps:
respectively filling the solution A and the solution B into two dropping bottles, firstly dropping 1-2 drops of the solution A onto a wall panel, then adding 1-2 drops of the solution B onto the same position of the wall panel, wiping off the dropped solution A and the dropped solution B after 2-5 minutes, and if black marks appear at the positions of the solution A and the solution B dropped onto the wall panel, indicating that the wall panel contains lead, and if the marks are black when the lead content is higher, indicating that the marks are black when the solution A and the solution B are not black when the solution A and the solution B are dropped onto the wall panel, indicating that the wall panel does not contain lead.
The solution A is 0.15mol/L sulfuric acid solution, and the solution B is 0.05mol/L sodium sulfide solution.
The method of the invention has the following advantages: the test solution is stable, easy to store and carry; the method has the advantages of low cost, simple operation, obvious and reliable phenomenon, capability of realizing the inspection at any time and any place, and convenience for large-scale popularization.
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FIG. 1 is a photograph showing a comparative examination in example 1 of the present invention.
FIG. 2 is a photograph showing the results of the examination in example 2 of the present invention.
The specific implementation mode is as follows:
example 1:
the material to be tested in the embodiment is a lead-containing and lead-free wall panel provided by the building material factory of Yongan Zhenhu decorative beauty in Liuyang city of Hunan province.
0.15mol/L sulfuric acid and 0.05mol/L sodium sulfide are prepared, 2 drops of 0.15mol/L sulfuric acid solution are firstly dripped on the wall panel, 2 drops of 0.05mol/L sodium sulfide solution are dripped at the same position, the dripped solution is wiped off after 2 minutes, obvious black marks are left on the wall panel containing lead, and no mark exists on the wall panel containing lead. The photograph is shown in FIG. 1.
Example 2:
the test material is PVC wire groove plate of unknown manufacturer.
The test method was the same as in example 1, and the results showed that lead was contained. The photograph is shown in FIG. 2.
Claims (1)
1. A method for detecting whether a wall panel contains lead or not is characterized by comprising the following specific steps:
respectively filling the solution A and the solution B into two dropping bottles, firstly dropping 1-2 drops of the solution A onto a wall panel, then adding 1-2 drops of the solution B onto the same position of the wall panel, wiping off the dropped solution A and the dropped solution B after 2-5 minutes, and if black marks appear at the positions of the wall panel where the solution A and the solution B are dropped, indicating that the wall panel contains lead, and if the marks are black when the lead content is higher, indicating that the marks are black when the solution A and the solution B are dropped, indicating that the wall panel does not contain lead;
the solution A is 0.15mol/L sulfuric acid solution, and the solution B is 0.05mol/L sodium sulfide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010079460.3A CN111208126A (en) | 2020-02-04 | 2020-02-04 | Method for detecting lead in wall panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010079460.3A CN111208126A (en) | 2020-02-04 | 2020-02-04 | Method for detecting lead in wall panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111208126A true CN111208126A (en) | 2020-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010079460.3A Pending CN111208126A (en) | 2020-02-04 | 2020-02-04 | Method for detecting lead in wall panel |
Country Status (1)
| Country | Link |
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| CN (1) | CN111208126A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424489A (en) * | 2011-09-28 | 2012-04-25 | 界首市骏马工贸有限公司 | Desulfurized lead-containing wastewater recycling processing method |
| CN104406962A (en) * | 2014-11-24 | 2015-03-11 | 苏州东辰林达检测技术有限公司 | Kit for quickly detecting lead ion in water sample and use method of kit |
| CN105842390A (en) * | 2016-06-17 | 2016-08-10 | 长春黄金研究院 | Determining method for lead contents in gold concentrate and lead concentrate |
-
2020
- 2020-02-04 CN CN202010079460.3A patent/CN111208126A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424489A (en) * | 2011-09-28 | 2012-04-25 | 界首市骏马工贸有限公司 | Desulfurized lead-containing wastewater recycling processing method |
| CN104406962A (en) * | 2014-11-24 | 2015-03-11 | 苏州东辰林达检测技术有限公司 | Kit for quickly detecting lead ion in water sample and use method of kit |
| CN105842390A (en) * | 2016-06-17 | 2016-08-10 | 长春黄金研究院 | Determining method for lead contents in gold concentrate and lead concentrate |
Non-Patent Citations (4)
| Title |
|---|
| 张秋生: "地球科学的现状和未来——二十六届国际地质大会综述", 《长春地质学院学报》 * |
| 李静文: "硫化钠沉淀法处理含铅废水研究", 《赤峰学院学报(自然科学版)》 * |
| 高永刚等: "金属服装附件及仿真饰品中镍的快速比色检测法", 《理化检验(化学分册)》 * |
| 齐志恒: "点滴试验法测定白酒中含铅量", 《理化检验.化学分册》 * |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200529 |