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Characteristics and Uncertainty of Industrial VOCs Emissions in China

Category: Air Toxics

Volume: 15 | Issue: 3 | Pages: 1045-1058
DOI: 10.4209/aaqr.2014.10.0236
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Xuecheng Wu, Weiwei Huang, Yongxin Zhang, Chenghang Zheng, Xiao Jiang, Xiang Gao , Kefa Cen

  • State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

Highlights

An updated industrial VOCs emission inventory was developed for 2011 in China.

Variations in regions and source characteristics were investigated and analyzed.

Uncertainties of sectors in the inventory were assessed in a quantitative way.


Abstract

An industrial sector-based source volatile organic compounds (VOCs) emission inventory was developed for the year 2011 in China with the use of ‘emission factor method’. Based on the concept of source-tracing and a ‘bottom-up’ approach, it is estimated that the total emissions of industrial VOCs were 15.8 Tg for the year 2011, 17.7% of which came from production of VOCs, 8.4% came from storage and transport, 14.2% came from industrial processes using VOCs as raw materials, and 59.7% came from use of VOCs-containing products. Industrial VOCs emissions in East China were the largest contributors, comprising 40% of total. Four kinds of sources including furniture manufacturing, petroleum refining, machinery equipment manufacturing and printing industry took up 53.8% of total emissions. Therefore, more efficient VOCs control equipment should be paid attention to and promoted. A quantitative approach, the bootstrap simulation and Monte Carlo sampling, was used to analyze uncertainties, there is relatively medium uncertainty with an error of –42% to +71%, ranging from 9.2 to 27.2 Tg on the 95% confidence interval. To reduce VOCs emission inventory uncertainties requires giving priority to research on conducting more measurements of key sources. It’s imperative to establish domestic emission factor database.

Keywords

Industrial VOCs Emission inventory Source-tracing Uncertainty China


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