Nano/micron particles released from newspapers under different reading conditions

The Science of the Total Environment
Khajornsak SopajareeYu-Hsuan Yen

Abstract

Despite the extensive use of the Internet, printed newspapers remain a primary information source. In this study, reading a newspaper in a relatively confined or poorly ventilated indoor space was simulated to determine the profile of particles released from the newspaper into the air. The consecutive simulated conditions were reading without agitation of the newspaper (NoAg), followed by reading with agitation of the newspaper (Ag) and post-reading absent the newspaper (PostR), repeated with four newspapers. We found that particle number concentration (ΣN) fell during Ag owing to electroadhesion of ultrafine particles (<200 nm) caused by static charges created by friction between the paper surface and the air as a result of newspaper agitation. Conversely, particle surface area concentrations (ΣA) and particle volume concentrations (ΣV) increased significantly during Ag. This was because the larger, fine (1-2.5 μm) and coarse mode (2.5-10 μm), particles were detached from the newspaper during agitation due to inertial detachment - the release of even a small number of these particles contributing greatly to ΣA and ΣV. The critical particle number diameter (CPND) occurred at 207-310 nm. Particles smaller than this were subject ...Continue Reading

References

Jul 31, 2001·Journal of Exposure Analysis and Environmental Epidemiology·N E KlepeisW H Engelmann
Jul 9, 2005·Environmental Health Perspectives·Günter OberdörsterJan Oberdörster
Jan 22, 2008·Toxicological Sciences : an Official Journal of the Society of Toxicology·Jessica E S BohonowychMichael S Denison
Mar 25, 2008·International Journal of Pharmaceutics·Wei YangRobert O Williams
Jan 14, 2010·Chemical Reviews·Tunga SalthammerRainer Marutzky
Dec 24, 2011·Journal of Medical Toxicology : Official Journal of the American College of Medical Toxicology·Jonathan O AndersonAndrew Stolbach
Aug 15, 2013·Environmental Health Perspectives·Xia MengHaidong Kan
Apr 15, 2014·Particle and Fibre Toxicology·Hedwig M BraakhuisFlemming R Cassee
Jul 19, 2014·The Lancet Oncology·Dana LoomisUNKNOWN International Agency for Research on Cancer Monograph Working Group IARC
Jun 4, 2015·Environmental Health Perspectives·Liuhua ShiJoel D Schwartz
Mar 20, 2016·Biochimica Et Biophysica Acta·Rui ChenChunying Chen
May 7, 2016·The Science of the Total Environment·S Suresh BabuK Krishna Moorthy

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.