Gridded Atmospheric Emission Inventory of PCDD/Fs in China

CHEN Lu-lu1 HUANG Tao1 CHEN Kai-jie1 SONG Shi-jie1 GAO Hong1 MA Jian-min1,2

(1.Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China 730000)
(2.Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China 100871)

【Abstract】PCDD/Fs emission inventory is the basis for PCDD/Fs control, research on environmental fate behavior, and health risk assessment. In the present study, based on officially released PCDD/Fs emissions inventory for each industry in China in 2004, we estimated atmospheric PCDD/Fs emissions by sector in various provinces in 2016 by combining the emission intensity in the “Identification and Quantification of PCDD/Fs Emission Standards Toolkit” released by the United Nations Environment Program( UNEP) in 2013. Subsequently, using different gridding data for various sectors as surrogate data, we established atmospheric gridded emission inventory( 1/4° × 1/4° latitude by longitude) for PCDD/Fs in China. Finally, the uncertainty of PCDD/Fs emission inventory was analyzed. Results show that the atmospheric emissions of PCDD/Fs in China in 2016 were 10 366 g, which was about two times higher than that in 2004. From the perspective of the emission sector, metal smelting is the largest emitter of PCDD/Fs in China, which released 5 333 g, followed by waste incineration (2 469 g), heating and power generation (1 290 g), and mineral production (933 g). These four sectors accounted for 97% of China’s total PCDD/Fs emissions. In spatial terms, China’s atmospheric PCDD/Fs emissions are mainly concentrated in the Beijing-Tianjin-Hebei, Yangtze River Delta, and Pearl River Delta regions. PCDD/Fs emissions from the Beijing-Tianjin-Hebei and Yangtze River Delta regions originate mainly from steel smelting, and that from the Pearl River Delta region is mainly due to waste incineration.

【Keywords】 China; dioxin; atmospheric; gridded; emission inventory; emission characteristics;

【DOI】

【Funds】 National Natural Science Foundation of China (41877507, 41503089, 41671460)

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This Article

ISSN:0250-3301

CN: 11-1895/X

Vol 41, No. 02, Pages 510-519

February 2020

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Article Outline

Abstract

  • 1 Materials and methods
  • 2 Results and discussion
  • 3 Conclusion
  • References