Sector-based VOCs emission factors and source profiles for the surface coating industry in the Pearl River Delta region of China.
Sector-based VOCs emission factors and source profiles for the surface coating industry in the Pearl River Delta region of China.
复制标题
DOI：
10.1016/j.scitotenv.2016.12.172
复制
发表时间：
2017-04
期刊：
影响因子：
--
通讯作者：
Z. Zhong;Qing'e Sha;Junyu Zheng;Z. Yuan;Zongjiang Gao;Jiamin Ou;Zhuoyun Zheng;Cheng Li;
中科院分区：
文献类型：
--
作者：
Z. Zhong;Qing'e Sha;Junyu Zheng;Z. Yuan;Zongjiang Gao;Jiamin Ou;Zhuoyun Zheng;Cheng Li;
准确描述VOCs的排放特性对于制定VOCs控制策略至关重要。作为珠江三角洲（珠三角）地区VOCs排放特征研究的一项持续努力，本研究针对珠三角地区最重要的VOCs排放源--表面涂装行业。分析的行业包括造船涂料、木制家具涂料、金属表面涂料、塑料表面涂料、汽车涂料和织物表面涂料。以行业为基础的实地测量，以表征珠江三角洲的挥发性有机化合物排放因子和源概况。结果发现，这六个行业的原材料VOCs排放系数范围为0.34至0.58千克VOCs每千克原材料（kg·kg− 1），而基于生产产量的排放系数范围为0.59千克至13.72吨VOCs每生产。因此，表面涂装行业VOCs排放因子的计算宜基于不确定性较低的原材料。不同部门的污染源概况差别很大。芳香族化合物是船舶涂料、木制家具涂料、金属表面涂料和汽车涂料中最大的一类，而含氧VOCs（OVOCs）在塑料和织物表面涂料领域中最丰富。这6个部门的芳香族VOCs主要种类相似，主要是甲苯和间/对二甲苯，而OVOCs在不同部门之间存在差异。汽车工业三大流程中的VOCs概况，自动涂布、自动干燥和自动修复也显示出较大的变化。珠江三角洲各部门的主要化合物种类与其他地区相似，但个别化合物所占比例不同。在珠三角地区也检测到一些特殊的成分。这项研究强调了全面和及时更新当地污染源概况的重要性。
Accurate depiction of VOCs emission characteristics is essential for the formulation of VOCs control strategies. As one of the continuous efforts in improving VOCs emission characterization in the Pearl River Delta (PRD) region, this study targeted on surface coating industry, the most important VOCs emission sources in the PRD. Sectors in analysis included shipbuilding coating, wood furniture coating, metal surface coating, plastic surface coating, automobile coating and fabric surface coating. Sector-based field measurement was conducted to characterize VOCs emission factors and source profiles in the PRD. It was found that the raw material-based VOCs emission factors for these six sectors ranged from 0.34 to 0.58 kg VOCs per kg of raw materials (kg·kg− 1) while the emission factors based on the production yield varied from 0.59 kg to 13.72 t VOCs for each production manufactured. VOCs emission factors of surface coating industry were therefore preferably calculated based on raw materials with low uncertainties. Source profiles differed greatly among different sectors. Aromatic was the largest group for shipbuilding coating, wood furniture coating, metal surface coating and automobile coating while the oxygenated VOCs (OVOCs) were the most abundant in the plastic and fabric surface coating sectors. The major species of aromatic VOCs in each of these six sectors were similar, mainly toluene andm/p-xylene, while the OVOCs varied among the different sectors. VOCs profiles in the three processes of auto industry, i.e., auto coating, auto drying and auto repairing, also showed large variations. The major species in these sectors in the PRD were similar with other places but the proportions of individual compounds were different. Some special components were also detected in the PRD region. This study highlighted the importance of updating local source profiles in a comprehensive and timely manner.