Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for quantification of mineral dust in air based on optical absorption of particles concentrated by a virtual impactor and a device performing the said method

A light absorption and mineral technology, applied in the direction of particle suspension analysis, analysis of gas mixture, preparation of test samples, etc., can solve the problems of not being quantified, not allowing specific time mapping of dust peaks, and requiring time, etc.

Pending Publication Date: 2021-02-26
阿尔沃索公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method only shows results for each day and does not allow mapping of dust peaks at specific times of the day
Additionally, samples need to be collected and analyzed, which takes time, thus adding to the cost of the method
[0010] Several different aerosol parameters, such as single-scattering albedo (SSA), absorption angstrom (AAE), and single-scattering albedo angstrom (SSAAE), can be determined based on measurements of scattering and absorption using known equipment, however, These parameters are only qualitative and not quantitative

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for quantification of mineral dust in air based on optical absorption of particles concentrated by a virtual impactor and a device performing the said method
  • A method for quantification of mineral dust in air based on optical absorption of particles concentrated by a virtual impactor and a device performing the said method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The methods are preferably run in parallel and have different entries (BGI Inc. SCC 1.197PM 1 Sharp cyclones (PM 1 Inlet) and the virtual impactor (VI)) as described above were performed with two black carbon instrument models AE33 (Magee Scientific, USA). The first instrument samples at a flow rate of 5 l / min, while one sample through the VI is set at a flow rate of 2 l / min to increase the concentration efficiency of the VI. Other possible flow rates are 1 l / min to 5 l / min, preferably 2 l / min. The ambient air sampled by the virtual impactor (VI) is 50 l / min to 120 l / min, preferably 100 l / min. Most of the air is exhausted through the VI through a large volume pump. Coarse particles are inertially "bumped" into the small stream, which is carried by the exhaust pipe to the connected instrument. The sample flow must be larger than the small flow, where the exact values ​​of the small flow and sample flow depend on the design of the virtual impactor. In general, larger...

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

No PUM Login to View More

Abstract

The present invention belongs to the field of devices and methods for measurement of particle concentration, more precisely to the field of devices and methods for quantification of particles based ontheir physical characteristics, especially with the use of optical means. The invention relates to a method for determination of ambient mineral dust concentration based on optical absorption of particles concentrated by a virtual impactor as well as a device performing the said method. The method comprises the following steps: sampling air samples with particle size smaller than 1 mum (PM1) andsampling air samples with particle size up to 10 mum; concentrating the samples with particle sizes up to 10 mum with a virtual impactor; measuring optical absorption of collected samples at least onewavelength from UV to IR spectre, preferably from 370 to 950 nm, most preferably at 370 nm; subtracting the absorption of the samples with particle size smaller than 1 mum from the absorption of thesample concentrated by the virtual impactor.

Description

technical field [0001] The present invention is in the field of devices and methods for measuring particle concentrations, more precisely in the field of devices and methods for quantifying particles based on their physical properties, in particular using optical means. The invention relates to a method of determining the concentration of mineral dust in air based on the light absorption of particles concentrated by a virtual impactor and a device for carrying out the method. Background technique [0002] Mineral dust is an expression that covers airborne particles produced by the suspension of minerals that make up soil. It is mainly composed of various oxides and carbonates, and its exact elemental composition depends on the source of the dust. The Sahara Desert is thought to be the main source of mineral dust that spreads across the Mediterranean Sea to Europe and across the Caribbean Sea to northern South America, Central America and eastern North America. Another sour...

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
no application Login to View More
IPC IPC(8): G01N15/06G01N1/40
CPCG01N15/0625G01N1/40G01N15/075G01N2015/0046G01N1/2208G01N15/06G01N33/0004G01N2015/0261
Inventor 德里诺维奇·卢卡莫里尼克·格里萨斯塔夫鲁拉斯·伊索纳斯贝赞塔科斯·斯皮罗斯皮克丽达斯·迈克尔恩加·弗洛林西亚雷·吉恩
Owner 阿尔沃索公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com