Metal element detection method
A detection method and technology for metal elements, applied in measurement devices, color/spectral characteristic measurement, instruments, etc., can solve the problems of human body and environmental threats, difficulty in determining the authenticity and stability of data, and volatility of potassium ion detection results, etc. Achieve the effect of low detection limit, small standard deviation and stable reproducibility
Active Publication Date: 2019-05-03
GUANGZHOU ZHONGJING ENVIRONMENTAL MONITORING CO LTD
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Yet, generally need to add lanthanum nitrate in the above-mentioned method process as deionization agent, and when lanthanum nitrate encounters combustibles on fire, can promote the intensity of a fire, and the mixture with combustibles is easy to catch fire, and can burn violently; Lanthanum nitrate solution is mixed with other solutions, It is easy to form complexes, which can exist uniformly in the solution, causing the detection results of potassium ions in the atomic absorption spectrophotometer to fluctuate easily, making it difficult to determine the authenticity and stability of the data; Toxic nitrogen oxide gas poses a potential threat to the human body and the environment
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0028] The detection of embodiment 1 metal element:
[0029] The deionizer comprises the following components in parts by weight: 12.5 parts of deionized water, 1.5 parts of potassium chloride, 0.65 parts of rubidium chloride, 1.35 parts of modified yttrium oxide, and 6.5 parts of hydrochloric acid solution.
[0030] The preparation method of described modified yttrium oxide comprises the following steps:
[0031] (1) Mix yttrium oxide powder and 2-aminoethanesulfinic acid in the mixture of ether and n-butanol, heat to 55°C, stir for 55 min, and the stirring speed is 1200r / min; the mixture of ether and n-butanol The mass ratio of ether and n-butanol in the mixture is 1:2.2; the mass ratio of the yttrium oxide powder to 2-aminoethanesulfinic acid is 13:1, and the mass ratio of the yttrium oxide powder to ether and n-butanol mixed solution The mass ratio is 1:20;
[0032] (2) Add poloxamer whose weight is 0.5 times the weight of yttrium oxide powder to the mixture in step (1),...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| quality score | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates-the technical field of analysis detection of metal elements and relates to an analysis detection method for detecting the metal elements in the air. The method relates to the deionizer solution. The deionizer solution includes raw materials by weight as follows, 10-15 parts of deionized water, 1-2 parts of potassium chloride, 0.5-0.8 parts of rubidium chloride, 1-1.5 parts ofmodified yttrium oxide and 5-8 parts of hydrochloric acid solution, in the preparation process of the sample solution, the deionizer solution is added, fluctuation of the detection result caused by the complex formed through mixing the lanthanum nitrate solution with other solutions in a traditional method is not only avoided, the metal elements and their compounds in the air can be further accurately, quickly and stably measured, but also release of highly toxic nitrogen oxide gases due to use of lanthanum nitrate in the conventional method can be further avoided. The method is advantaged inthat the detection error can be significantly reduced, the lower detection limit can be obtained, and the method is stable and reproducible.
Description
technical field [0001] The invention relates to the technical field of analysis and detection of metal elements, and relates to an analysis and detection method for detecting metal elements in air. Background technique [0002] In order to ensure national health and economic development, my country has promulgated and implemented documents on occupational disease prevention and workplace limits. In the workplace, solid harmful metal element pollutants in the air are not degradable. The existence of harmful metal elements not only seriously pollutes the environment but also poses a great potential threat to the human body. At present, there are many methods for the determination of metal elements in the air. Among them, atomic absorption spectrophotometry is the most widely used. Taking the determination of potassium in the national standard GBZ / T 300.22-2017 as an example, this method has low detection limit and high accuracy. The principle is that the aerosol state water-s...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N33/00
Inventor 李红霞马留芳曹普美陈森平张敏谢泽敏林镇
Owner GUANGZHOU ZHONGJING ENVIRONMENTAL MONITORING CO LTD