Atmospheric Emission Characteristics and Control Policies of Five Precedent-Controlled Toxic Heavy Metals from Anthropogenic Sources in China
Atmospheric Emission Characteristics and Control Policies of Five Precedent-Controlled Toxic Heavy Metals from Anthropogenic Sources in China
复制标题
我国先行控制的5种人为有毒重金属大气排放特征及控制政策
DOI：
10.1021/es5037332
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发表时间：
2015-01-20
影响因子：
11.4
通讯作者：
Gao, Jiajia
中科院分区：
文献类型：
--
作者：
Cheng, Ke;Wang, Yan;Gao, Jiajia
建立了2000 - 2010年期间中国主要人为源排放的五种优先控制的有毒重金属（汞（Hg）、砷（As）、铅（Pb）、镉（Cd）和铬（Cr））的自下而上的清单。随着煤炭消费和工业生产的增加，重金属排放总量呈现逐渐上升的趋势，2010年汞排放总量约为842.22吨，砷约为4196.31吨，铅约为29272.14吨，镉约为795.29吨，铬约为13715.33吨。煤炭燃烧被发现是重金属排放的主要来源。由于各省工业和电力部门煤炭使用的巨大差异，空间分配呈现出明显的不均衡特征，并且以国内生产总值（GDP）和人口作为替代指标将排放分配到0.5度×0.5度的网格单元中展示了空间分布特征。此外，对2015年目标年三种不同控制情景下特定人为源的重金属排放进行了预测，并提出了协同和专门的控制策略以满足不同地区减排目标的需求。未来，全过程控制管理体系将是控制重金属最有效的方法。
A bottom-up inventory of atmospheric emissions of five precedent-controlled toxic heavy metals (HMs), including mercury (Hg), arsenic (As), lead (Pb), cadmium (Cd), and chromium (Cr), from primary anthropogenic sources in China is established for the period 2000-2010. Total emissions of HMs demonstrate a gradually ascending trend along with the increase of coal consumption and industrial production, which are estimated at approximately 842.22 t for Hg, 4196.31 t for As, 29272.14 t for Pb, 795.29 t for Cd, and 13715.33 t for Cr for 2010. Coal combustion is found to be the primary source of HMs emissions. Owing to the dramatic differences of coal use by industrial and power sectors among provinces, spatial allocation performs remarkably uneven characteristics, and spatial distribution features are demonstrated by allocating the emissions into 0.5 degrees x 0.5 degrees grid cells with GDP and population as surrogate indexes. Further, HMs emissions from specified anthropogenic sources under three different control scenarios for the target year 2015 are projected, and collaborative and specialized control strategies are proposed to meet the demand of emission reduction goals of different regions. In the future, a whole processes control management system will be the most effective way for control of HMs.