%0 Journal Article
%T Characterization of Arsenic Emissions from a Coal-Fired Power Plant<br>300MW煤粉锅炉砷排放特征的实验研究
%A GUO Xin
%A HENG Chu-guang
%A CHENG Dan
%A <br>郭欣
%A 郑楚光
%A 陈丹
%J 环境科学
%D 2006
%I 
%X An emissions study for arsenic was conducted at a 300 MW coal-fired plant equipped with an electrostatic precipitator. The input and output streams such as coal, slag, ESP ash, and flue gas containing the post-ESP particulates were collected. Gaseous arsenic was sampled using EPA method 29 and the arsenic concentrations in the samples were measured using inductively coupled plasma atomic emission spectrometry (HG-ICP-AES). The mass balance recovery of arsenic estimated in this study was 87.2%. Arsenic concentration in stack gas was 2.5 microg/m3. Approximately 0.53% of the coal-derived arsenic was incorporated into slag, 84.6% of the arsenic was found on the fly ash collected by electrostatic precipitators, and 2.16% was found in the vapor phase. The relationship between arsenic concentration and ash particle size was also assessed, and arsenic is significantly concentrated in the small sized particles.
%K coal
%K arsenic
%K flue gas
%K particle size
%K fly ash<br>煤
%K 砷
%K 烟气
%K 粒度
%K 飞灰
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=A245A07513437025&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=E158A972A605785F&sid=250DF325A002B9CC&eid=20ED669EB429E15C&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=11