4.6 Article

Condensation particle counters: Exploring the limits of miniaturisation

Related references

Note: Only part of the references are listed.
Article Environmental Sciences

Utility of outdoor central site monitoring in assessing exposure of school children to ultrafine particles

Basant Pradhan et al.

Summary: Epidemiological studies often use a single monitoring site in urban areas to investigate the association between particle exposure and health effects. However, for ultrafine particles (PNC), the central site cannot consistently represent personal exposure, as they are affected by different sources.

SCIENCE OF THE TOTAL ENVIRONMENT (2023)

Article Allergy

World Health Organization global air quality guideline recommendations: Executive summary

Anna Goshua et al.

Summary: Air pollution is a major cause of death globally, particularly affecting populations in low- and middle-income countries. The World Health Organization has published updated air quality guidelines to assist in improving air quality worldwide.

ALLERGY (2022)

Article Construction & Building Technology

Effects of cooking and window opening behaviors on indoor ultrafine particle concentrations in urban residences: A field study in Yangtze River Delta region of China

Zhiwei Zhang et al.

Summary: The study found that outdoor air temperature is a key factor influencing occupants' window-opening behaviors in residences, with most preferring to use range hood accompanied by opening kitchen window for ventilation. Indoor UFP concentrations were significantly higher in winter compared to summer and transition season, correlating with cooking activities.

BUILDING AND ENVIRONMENT (2022)

Article Engineering, Chemical

Lab-on-printed circuit board based water harvesting condensation particle counter for ubiquitous monitoring of airborne ultrafine particles

Seong-Jae Yoo et al.

Summary: We have developed a water harvesting condensation particle counter (WHCPC) using lab-on-printed circuit board (PCB) technology. Our method provides an inexpensive, compact, and highly accurate system for the ubiquitous monitoring of airborne ultrafine particles (UFPs). The proposed system is able to monitor harmless UFPs using water as the working fluid, without the need for water replenishment using a moderated water condensation method.

JOURNAL OF AEROSOL SCIENCE (2022)

Article Engineering, Chemical

Perspectives for regulating 10 nm particle number emissions based on novel measurement methodologies

Z. Samaras et al.

Summary: This paper presents the results of three EU-funded projects that have successfully developed measurement devices for sub-23 nm particles and validated their feasibility. The research shows that sub-23 nm particles are mainly generated during engine start and acceleration phases. The innovations demonstrate the maturity and stability of the technology for regulation of sub-23 nm particles.

JOURNAL OF AEROSOL SCIENCE (2022)

Article Engineering, Chemical

An integrated electrical condensation particle counter for compact and low-cost ultrafine particle measurement system

Jae-Wan Jeon et al.

Summary: In this study, a compact and low-cost measurement system was developed to measure the real-time number concentration of airborne ultrafine particles. The system counts particles based on their electrostatic properties using the condensation nucleation method, overcoming the limitations of complex optical systems.

JOURNAL OF AEROSOL SCIENCE (2022)

Article Environmental Sciences

The WHO Air Quality Guidelines 2021 promote great challenge for indoor air

Bin Zhao et al.

Summary: The WHO AQGs 2021 incorporates stricter guidelines for air pollution, including both outdoor and indoor air quality. The challenges to meeting the indoor air quality guidelines are discussed. A treatment solution that combines efforts from policy, technology, and education is suggested.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

Article Environmental Sciences

Differentiating Semi-Volatile and Solid Particle Events Using Low-Cost Lung-Deposited Surface Area and Black Carbon Sensors

Molly J. Haugen et al.

Summary: This study conducted a 3-month long field test using low-cost particle sensors in an urban background environment and developed a low-cost method to assess the fraction of solid and semi-volatile particles in aerosol samples. The results showed a wide variation in the semi-volatile fraction of particles, and the measurements from low-cost sensors were comparable to high-cost analyses.

ATMOSPHERE (2022)

Article Meteorology & Atmospheric Sciences

A study on the performance of low-cost sensors for source apportionment at an urban background site

Dimitrios Bousiotis et al.

Summary: Knowledge of air pollution sources is essential for policymaking and mitigation efforts. This study applied a PMF analysis using data from low-cost sensors to identify pollution sources at a site in Birmingham, UK. The results were confirmed by data from regulatory-grade instruments, highlighting the potential of using low-cost sensor data for atmospheric applications and source apportionment.

ATMOSPHERIC MEASUREMENT TECHNIQUES (2022)

Article Meteorology & Atmospheric Sciences

Evaluating uncertainty in sensor networks for urban air pollution insights

Daniel R. Peters et al.

Summary: Ambient air pollution is a significant global public health risk, and the use of lower-cost air quality sensors can help understand local pollution issues, although measurement uncertainty may be a barrier. This study deployed 100 stationary NO2 LCSs in Greater London for 2 years, evaluating sensor performance and revealing occasional poor performance and high bias in the summer months through comparisons with reference instruments.

ATMOSPHERIC MEASUREMENT TECHNIQUES (2022)

Article Engineering, Chemical

Optimizing the activation efficiency of sub-3 nm particles in a laminar flow condensation particle counter: Model simulation

Weixing Hao et al.

Summary: This study simulated the activation and growth of particles smaller than 3 nm in a laminar flow CPC using COMSOL, optimizing particle activation and comparing the efficiency of different working fluids.

JOURNAL OF AEROSOL SCIENCE (2021)

Article Chemistry, Analytical

Evaluation of Solid Particle Number Sensors for Periodic Technical Inspection of Passenger Cars

Anastasios Melas et al.

Summary: With the increase in European regulations on automotive emissions, the mass scale in-use vehicle testing has become crucial for improving air quality. Diesel and gasoline particulate filters have significantly reduced solid particle number emissions, but the potential damage or tampering of these filters remains a concern. The feasibility of utilizing on-board monitoring, remote sensing, and periodic technical inspections to detect malfunctioning or tampered filters is being explored.

SENSORS (2021)

Review Chemistry, Analytical

Review of the Newly Developed, Mobile Optical Sensors for Real-Time Measurement of the Atmospheric Particulate Matter Concentration

Sama Molaie et al.

Summary: This paper discusses the increased attention on air quality monitoring, specifically particulate matter (PM), and the development of new mobile and compact optical sensors. It provides an overview of the effects, sources, characteristics of PM, as well as the theories, detection methods, and operating principles of the newly developed portable optical sensors. The review compares different novel optical devices in terms of structures, parameters, and detection sensitivity.

MICROMACHINES (2021)

Article Chemistry, Multidisciplinary

A Simple Method for Measuring Fine-to-Ultrafine Aerosols Using Bipolar Charge Equilibrium

Robert T. Nishida et al.

ACS SENSORS (2020)

Review Biochemistry & Molecular Biology

Ultrafine particles: unique physicochemical properties relevant to health and disease

Hyouk-Soo Kwon et al.

EXPERIMENTAL AND MOLECULAR MEDICINE (2020)

Article Chemistry, Analytical

Weakly Coupled Piezoelectric MEMS Resonators for Aerosol Sensing

Malar Chellasivalingam et al.

SENSORS (2020)

Review Chemistry, Analytical

A Review of Low-Cost Particulate Matter Sensors from the Developers' Perspectives

Brigida Alfano et al.

SENSORS (2020)

Article Engineering, Chemical

Measuring aerosol active surface area by direct ultraviolet photoionization and charge capture in continuous flow

R. T. Nishida et al.

AEROSOL SCIENCE AND TECHNOLOGY (2019)

Article Engineering, Chemical

A MAGIC concept for self-sustained, water-based, ultrafine particle counting

Susanne V. Hering et al.

AEROSOL SCIENCE AND TECHNOLOGY (2019)

Article Engineering, Chemical

Measuring ultrafine aerosols by direct photoionization and charge capture in continuous flow

Robert T. Nishida et al.

AEROSOL SCIENCE AND TECHNOLOGY (2018)

Article Engineering, Chemical

Detection near 1-nm with a laminar-flow, water-based condensation particle counter

Susanne V. Hering et al.

AEROSOL SCIENCE AND TECHNOLOGY (2017)

Article Engineering, Chemical

Effective density and volatility of particles sampled from a helicopter gas turbine engine

Jason S. Olfert et al.

AEROSOL SCIENCE AND TECHNOLOGY (2017)

Article Environmental Sciences

Concentration levels and source apportionment of ultrafine particles in road microenvironments

G. Argyropoulos et al.

ATMOSPHERIC ENVIRONMENT (2016)

Article Engineering, Chemical

Particle Emission Characteristics of a Gas Turbine with a Double Annular Combustor

Adam M. Boies et al.

AEROSOL SCIENCE AND TECHNOLOGY (2015)

Article Environmental Sciences

Air quality evaluation of London Paddington train station

Uven Chong et al.

ENVIRONMENTAL RESEARCH LETTERS (2015)

Article Engineering, Chemical

Minimizing Concentration Effects in Water-Based, Laminar-Flow Condensation Particle Counters

Gregory S. Lewis et al.

AEROSOL SCIENCE AND TECHNOLOGY (2013)

Article Engineering, Chemical

Design, Calibration, and Field Performance of a Miniature Diffusion Size Classifier

M. Fierz et al.

AEROSOL SCIENCE AND TECHNOLOGY (2011)

Article Chemistry, Multidisciplinary

Monitor for detecting and assessing exposure to airborne nanoparticles

Johan Marra et al.

JOURNAL OF NANOPARTICLE RESEARCH (2010)

Editorial Material Biotechnology & Applied Microbiology

Nanoparticles in the lung

Wolfgang G. Kreyling et al.

NATURE BIOTECHNOLOGY (2010)

Article Mechanics

On phase transition in compressible flows: modelling and validation

XS Luo et al.

JOURNAL OF FLUID MECHANICS (2006)

Article Engineering, Chemical

A method for particle size amplification by water condensation in a laminar, thermally diffusive flow

SV Hering et al.

AEROSOL SCIENCE AND TECHNOLOGY (2005)

Article Cardiac & Cardiovascular Systems

Passage of inhaled particles into the blood circulation in humans

A Nemmar et al.

CIRCULATION (2002)