Home | Contact Us | Sitemap | 中文 | CAS | Director's Email
 
Location:Home > Papers > Recent Papers
Variation in the mercury concentration and stable isotope composition of atmospheric total suspended particles in Beijing, China TEXT SIZE: A A A
We investigated the effect of the temporary ban of local industrial activities during the Asia-Pacific Economic Cooperation (APEC) summit (4th-14th Nov 2014) in Beijing, China on total suspended particulate mercury (Hg-TSP) concentrations and isotope compositions. We measured Hg concentrations and isotope ratios in 33 TSP samples from central Beijing, including 21 samples collected from Jun 2012 to Apr 2014, and 12 samples collected from 14th Oct-19th Nov 2014. Volumetric concentrations of both TSP and Hg-TSP during the APEC summit were a factor of 2 lower than during the pre-APEC period, indicating substantial reductions in total particulate matter and Hg-TSP as a result of emissions controls. However, mass-normalized concentrations and mercury isotope ratios of Hg-TSP did not vary significantly between samples collected before, during, or after the APEC summit. These results show that local emissions are important sources of particle bound mercury (PBM) in Beijing and that their control can be used to immediately lower the volumetric concentration of Hg-TSP. They also indicate that a similarly complex mixture of sources contributed to PBM in Beijing before and during emissions controls were put in place and that PBM concentrations in Beijing are primarily controlled by emissions and secondarily by photoreduction.
 

Publication name

 JOURNAL OF HAZARDOUS MATERIALS Volume: 383 Article Number: 121131 DOI: 10.1016/j.jhazmat.2019.121131 Published: FEB 5 2020

Author(s)

 Huang, Qiang; Reinfelder, John R.; Fu, Pingqing; Huang, Weilin

Corresponding author(s) 

 HUANG Qiang 
 huangqiang@vip.gyig.ac.cn  
 Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China.

View here for the details 

Copyright © 2019 Institute Of Geochemistry, Chinese Academy of Sciences All Rights Reserved.
Address: 99 West Lincheng Road, Guanshanhu District, Guiyang, Guizhou Province 550081, P.R.China
Tel: +86-851-85895239 Fax: +86-851-85895239 Email: web_en@mail.gyig.ac.cn