Improving estimation of real-time concentration for inhalable particles < 10 μ m from a light scattering monitor

Respirable particulate matter air pollution is positively associated with SARS-CoV-2 mortality. Real-time and accurate monitoring of particle concentration changes is the first step to prevent and control air pollution from inhalable particles. In this research, a new light scattering instrument has been developed to detect the mass concentration of inhalable particles. This instrument couples the forward small-angle single particle counting method with the lateral group particle photometry method in a single device. The mass concentration of four sizes of inhalable particles in the environment can be detected simultaneously in a large area in real-time without using a particle impactor. Different from the traditional light scattering instrument, this new optical instrument can detect darker particles with strong light absorption, and the measurement results mainly depend on the particle size and ignore the properties of the particles. Comparative experiments have shown that the instrument can detect particles with different properties by simply calibrating the environmental density parameters, and the measurement results have good stability and accuracy.

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Development of a real-time total suspended particle mass concentration measurement system based on light scattering for monitoring fugitive dust in construction sites

Sensors and Actuators A Physical ◽

10.1016/j.sna.2021.113017 ◽

2021 ◽

pp. 113017

Author(s):

Wooseok Sung ◽

Seong-Jae Yoo ◽

Yong-Jun Kim

Keyword(s):

Light Scattering ◽

Real Time ◽

Measurement System ◽

Mass Concentration ◽

Suspended Particle ◽

Particle Mass ◽

Total Suspended Particle ◽

Fugitive Dust ◽

Construction Sites ◽

Particle Mass Concentration

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Light Scattering Measurements to Support Real-Time Monitoring and Closed-Loop Control of Aerosol Jet Printing

Additive Manufacturing ◽

10.1016/j.addma.2021.102028 ◽

2021 ◽

pp. 102028

Author(s):

Ethan B. Secor

Keyword(s):

Light Scattering ◽

Real Time ◽

Closed Loop ◽

Closed Loop Control ◽

Real Time Monitoring ◽

Loop Control ◽

Scattering Measurements ◽

Jet Printing ◽

Aerosol Jet Printing

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Ferro-self-assembly: magnetic and electrochemical adaptation of a multiresponsive zwitterionic metalloamphiphile showing a shape-hysteresis effect

Chemical Science ◽

10.1039/d0sc05249c ◽

2021 ◽

Vol 12 (1) ◽

pp. 270-281

Author(s):

Stefan Bitter ◽

Moritz Schlötter ◽

Markus Schilling ◽

Marina Krumova ◽

Sebastian Polarz ◽

...

Keyword(s):

Magnetic Field ◽

Light Scattering ◽

Dynamic Light Scattering ◽

Real Time ◽

Self Assembly ◽

Hysteresis Effect ◽

The Self ◽

Self Organization ◽

Stimuli Responsive ◽

Optical Birefringence

The self-organization properties of a stimuli responsive amphiphile can be altered by subjecting the paramagnetic oxidized form to a magnetic field of 0.8 T and monitored in real time by coupling optical birefringence with dynamic light scattering.

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A multi angle light scattering apparatus for the monitoring of rapid structural changes in biological systems in real time

Biophysics of Structure and Mechanism ◽

10.1007/bf00647602 ◽

1980 ◽

Vol 6 (S1) ◽

pp. 130-130

Author(s):

Rainer Uhl

Keyword(s):

Light Scattering ◽

Real Time ◽

Structural Changes ◽

Biological Systems

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Light scattering and extinction measurements combined with laser-induced incandescence for the real-time determination of soot mass absorption cross-section.

10.1002/essoar.10500915.1 ◽

2019 ◽

Author(s):

Jonathan Thompson

Keyword(s):

Light Scattering ◽

Real Time ◽

Cross Section ◽

Absorption Cross Section ◽

Absorption Cross ◽

The Real ◽

Soot Mass ◽

Laser Induced Incandescence ◽

Time Determination

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Field Comparison of Real-Time PM2.5 Readings from a Beta Gauge Monitor and a Light Scattering Method

Aerosol and Air Quality Research ◽

10.4209/aaqr.2007.01.0002 ◽

2007 ◽

Vol 7 (2) ◽

pp. 239-250 ◽

Cited By ~ 9

Author(s):

Cheng-Hsiung Huang

Keyword(s):

Light Scattering ◽

Real Time ◽

Scattering Method

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A study on the development of a light scattering particulate matter sensor and monitoring system

Computer Science and Information Systems ◽

10.2298/csis190905025c ◽

2020 ◽

Vol 17 (3) ◽

pp. 867-890

Author(s):

Jun-Hee Choi ◽

Hyun-Sug Cho

Keyword(s):

Big Data ◽

Particulate Matter ◽

Light Scattering ◽

Real Time ◽

Monitoring System ◽

Low Cost ◽

Gravimetric Method ◽

Correction Method ◽

Measurement Methods ◽

Linear Correction

The gravimetric method, which is mainly used among particulate matter (PM) measurement methods, includes the disadvantages that it cannot measure PM in real time and it requires expensive equipment. To overcome these disadvantages, we have developed a light scattering type PM sensor that can be manufactured at low cost and can measure PM in real time. We have built a big data system that can systematically store and analyze the data collected through the developed sensor, as well as an environment where PM states can be monitored mobile in real time using such data. In addition, additional studies were conducted to analyze and correct the collected big data to overcome the problem of low accuracy, which is a disadvantage of the light scattering type PM sensor. We used a linear correction method and proceeded to adopt the most suitable value based on error and accuracy.

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