Emission of unintentionally produced polychlorinated biphenyls (UP-PCBs) in China: Has this become the major source of PCBs in Chinese air?
Emission of unintentionally produced polychlorinated biphenyls (UP-PCBs) in China: Has this become the major source of PCBs in Chinese air?
复制标题
中国无意产生的多氯联苯（UP-PCB）的排放：这是否已成为中国空气中 PCB 的主要来源？
DOI：
10.1016/j.atmosenv.2012.10.028
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发表时间：
2013-03-01
影响因子：
5
通讯作者：
Li, Yi-Fan
中科院分区：
文献类型：
--
作者：
Cui, Song;Qi, Hong;Li, Yi-Fan
多氯联苯向大气的一次排放有两种：一种是有意生产的多氯联苯（IP-PCB）的一次排放，另一种是无意生产的多氯联苯（UP-PCB）。本文介绍了1950 - 2010年中国UP-PCB排放量。61年来UP-PCB排放总量估计为146.1吨，其中约98.1%来自水泥（132.5吨）和钢铁行业（63吨）。从1950年到2010年，中国焦化行业的排放量为115 kg，不到中国UP-PCB总排放量的0.1%。这些UP-PCB排放的时间和空间趋势进行了调查。20世纪80年代中期，由于中国水泥和钢铁工业的快速发展，UP-PCB排放量开始迅速增加，并可能在21世纪初超过IP-PCB排放量。UP-PCB排放的空间分布格局与人口分布格局基本一致，表明UP-PCB排放的人为性质。编制了中国水泥和钢铁行业1/6纬度和1/4经度分辨率的UP-PCB排放清单。将2005年UP-PCB排放量与2005年我们小组（IJRC-PTS）测量的PCB空气浓度进行了比较，发现这两个数据集之间存在显著的相关性，但对于农村站点，而不是城市站点。据最近的出版物报道，这些UP-PCB排放很可能是中国农村空气中PCB的主要来源，并可能是2004年至2008年中国空气中PCB整体增加的原因。据我们所知，这是中国UP-PCB排放的第一个数据集，从1950年到2010年，也是第一个全国范围内的UP-PCB网格排放清单。(C)2012爱思唯尔有限公司保留所有权利。
There are two kinds of primary emissions of PCBs to the atmosphere; one is primary emissions due to intentionally produced PCBs (IP-PCBs), and the other is due to unintentionally produced PCBs (UP-PCBs). This paper presents UP-PCB emissions in China from 1950 to 2010. The total UP-PCB emissions in the 61 years were estimated to be 146.1 t, approximately 98.1% of which were from cement (132.5 t) and steel industries (63 t). The emissions from Chinese coking industry were 115 kg from 1950 to 2010, less than 0.1% of the total UP-PCB emissions in China. Both The temporal and spatial trends of these UP-PCB emissions were investigated. The UP-PCB emissions started to increase quickly at the middle of 1980s due to the fast and continuously developing cement and steel industries in China, and exceeded IP-PCB emissions possibly during the beginning of 2000s. The spatial pattern of UP-PCB emissions was in general consistent with the population distribution pattern, indicating the anthropogenic nature of the UP-PCB emissions. The gridded Chinese emission inventories for UP-PCBs from cement and steel industries on a 1/6 degrees latitude and 1/4 degrees longitude resolution were also compiled. The gridded UP-PCB emissions in 2005 were compared with PCB air concentrations measured by our group (IJRC-PTS) in 2005, and a significant correlation between these 2 datasets was found for the rural sites, but not for the urban sites. It is most likely that these UP-PCB emissions were a major source for PCB in Chinese rural air, and possibly responsible for the increase of PCBs in Chinese air as a whole from 2004 to 2008, reported in recent publications. To our knowledge, this is the first dataset of the Chinese UP-PCB emissions spanning 61 years from 1950 to 2010, and also the first gridded emission inventories for UP-PCBs on a national scale. (C) 2012 Elsevier Ltd. All rights reserved.