Characteristics of indoor/outdoor PM2.5and elemental components in generic urban, roadside and industrial plant areas of Guangzhou City, China

Hong HUANG, Shun cheng LEE, Jun ji CAO, Chang wei ZOU, Xin geng CHEN, Shao jia FAN

Research output: Journal article publicationJournal articleAcademic researchpeer-review

56 Citations (Scopus)


Quantitative information on mass concentrations and other characteristics, such as spatial distribution, seasonal variation, indoor/outdoor (I/O) ratio, correlations and sources, of indoor and outdoor PM2.5and elemental components in Guangzhou City were provided. Mass concentration of PM2.5and elemental components were determined by standard weight method and proton-induced X-ray emission (PIXE) method. 18 elements were detected, the results showed positive results. Average indoor and outdoor PM2.5concentrations in nine sites were in the range of 67.7-74.5 μg/m3for summer period, and 109.9-123.7 μg/m3for winter period, respectively. The sum of 18 elements average concentrations were 5362.6-5533.4 μg/m3for summer period, and 8416.8-8900.6 μg/m3for winter period, respectively. Average concentrations of PM2.5and element components showed obvious spatial characteristic, that the concentrations in roadside area and in industrial plant area were higher than those in generic urban area. An obvious seasonal variation characteristic was found for PM2.5and elemental components, that the concentrations in winter were higher than that in summer. The I/O ratio of PM2.5and some elemental components presented larger than 1 sometimes. According to indoor/outdoor correlation of PM2.5and element concentrations, it was found that there were often good relationships between indoor and outdoor concentrations. Enrichment factors were calculated to evaluate anthropogenic versus natural elements sources.
Original languageEnglish
Pages (from-to)35-43
Number of pages9
JournalJournal of Environmental Sciences
Issue number1
Publication statusPublished - 1 Jan 2007


  • elemental components
  • indoor air
  • PM 2.5

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Environmental Science(all)

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