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Volume 3, Issue 2 (Suppl)
Trends in Green chem
ISSN: 2471-9889
Environmental & Green Chemistry 2017
July 24-26, 2017
Page 59
5
th
International Conference on
6
th
International Conference on
July 24-26, 2017 Rome, Italy
Environmental Chemistry and Engineering
Green Chemistry and Technology
&
Global atmospheric emissions of toxic heavy metals from anthropogenic sources under multi-scale regions
Hezhong Tian
and
Chuanyong Zhu
Beijing Normal University, China
B
ased on economic development and technology diffusion theory, anthropogenic atmospheric emission of typical heavy metals
(HM, Hg, As, Se, Pb, Cd, Cr, Ni, Sb, Mn, Co, Cu and Zn) characterized by global multi-scale regions, long-term spans and high
spatiotemporal resolutions were established by synthetically using the best available representation of time-varying emission factor
methods and ArcGIS tools. The main conclusions are summarized as follows: Emissions of 12 toxic heavy metals in China during the
period of 1949-2012, increased by about 20-128 times, totally reaching about 79807.7 tons in 2012, and contributing 36.8% of global
emissions (about 216893.1 tons). Coal combustion, liquid fuel combustion, nonferrous metal smelting and brake wear were identified
as the primary sources for the corresponding heavy metals. Generally, Shandong (for As, Se, Cd, Cr, Ni, Sb and Cu), Hebei (for Pb
and Zn), Guizhou (for Hg), Inner Mongolia (for Mn) and Shanxi (for Co) ranked as the largest provinces, respectively. Emission
intensities of HMs were much higher in central and eastern China than those in western China, and the coastal regions were classed
as the most polluted areas of varied HMs. Worldwidely speaking, China, Chile, India, Russia, the United States and South Africa are
the countries with high HMs burden. Therein, China ranked as the top one largest country with HMs (except for Sb) emissions. Asia
represented the highest heavy metals emitting continent, which accounts for approximately 58.6% of the global emission in 2012. The
top emission intensities of HMs were found in Eastern and Southern Asia and Eastern Europe.
Biography
Hezhong Tian has completed his PhD from Tsinghua University and Postdoctoral Studies from Tsinghua University School of Environment. He is now the Director
of Center for Atmospheric Environment Studies, Professor of School of Environment at Beijing Normal University of China. He has published more than 50 papers
in reputed journals like ES&T, and ACP, and has been serving as an Editorial Board Member of
Environmental Science Studies
.
hztian@bnu.edu.cnHezhong Tian et al., Trends in Green chem, 3:2
DOI: 10.21767/2471-9889-C1-002