Evaluation of nanoparticles emitted from printers in a clean chamber, a copy center and office rooms: Health risks of Indoor air quality

Xiaofei Shi, Rui Chen, Lingling Huo, Lin Zhao, Ru Bai, Dingxin Long, David Y.H. Pui, Weiqing Rang, Chunying Chen

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Indoor air quality has great impact on the human health. An increasing number of studies have shown that printers could release particulate matters and pose adverse effects on indoor air quality. In this study, a thorough investigation was designed to assess the aerosol printer particle total number concentration (TNC) and size distribution in normal office environment, one copy center, and a clean chamber. Particle analyzers, SMPS, OPS, and CPC3007 were used to monitor the total printing process. In normal office environment, 37 laser printers out of all surveyed 55 printers were classified as high particle emitters. Comparing to laser printers, 5 inkjet printers showed no particle emission. Particle emission level in a copy center increased slightly with TNC elevating to about 2 times of the aerosol background. Simulating test in a clean chamber indicated that printeremitted particles were dominated by particles in nanoscale (diameter of particle, Dp < 100 nm). These particles in a sealed clean chamber attenuated so slowly that it still held at high level with the concentration of 1.5×104 particles/cm3 after printing for 2.5 hours. Our present results demonstrate that printers indeed release particulates which keeping at a high concentration level in the indoor environment. Special care should be taken to this kind of widely applied machines and effective controls of particle emission at printing processes are necessary.

Original languageEnglish (US)
Pages (from-to)9554-9564
Number of pages11
JournalJournal of Nanoscience and Nanotechnology
Volume15
Issue number12
DOIs
StatePublished - Dec 1 2015

Bibliographical note

Funding Information:
We thank the financial support from the Ministry of Science and Technology of China (2011CB933401, 2012CB934003, 2012AA063501), National Natural Science Foundation of China (21477029, 21320102003, 21277037 and 21277080), Chinese Academy of Sciences (XDA09040400), and the Construct Program of the Key Discipline (Public Health and Preventive Medicine) in Hunan Province. We thank the workers in the copy center and normal offices for their cooperation and help.

Keywords

  • Attenuation
  • Nanoparticles release
  • Particle number concentration
  • Printer
  • Size distribution

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