Airborne PCDD/Fs in two e-waste recycling regions after stricter environmental regulations

Manwen Zhang, Guixian Feng, Wenhua Yin, Bing Xie, Mingzhong Ren, Zhencheng Xu, Sukun Zhang*, Zongwei CAI

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

Since the 2010s, the authorities of Guangdong province and local governments have enhanced law enforcement and environmental regulations to abolish open burning, acid washing, and other uncontrolled e-waste recycling activities. In this study, ambient air and indoor dust near different kinds of e-waste recycling processes were collected in Guiyu and Qingyuan to investigate the pollution status of particles and polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) after stricter environmental regulations. PM2.5 and PCDD/Fs both showed significantly reduced levels in the two regions compared with the documented data. The congener distribution and principal component analysis results also confirmed the significant differences between the current PCDD/Fs pollution characterizations and the historical ones. The estimated total intake doses via air inhalation and dust ingestion of children in the recycling region of Guiyu ranged from 10 to 32 pg TEQ/(kg•day), which far exceeded the tolerable daily intake (TDI) limit (1–4 pg TEQ/(kg•day). Although the measurements showed a significant reduction of the release of PCDD/Fs, the pollution status was still considered severe in Guiyu town after stricter regulations were implemented.

Original languageEnglish
Pages (from-to)3-10
Number of pages8
JournalJournal of Environmental Sciences
Volume62
DOIs
Publication statusPublished - Dec 2017

Scopus Subject Areas

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

User-Defined Keywords

  • China
  • E-waste recycling
  • Environmental regulation
  • Polychlorinated dibenzo-p-dioxins and furans

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