| Title: | [Emission Characterstics of VOCs and n-alkanes from Diesel Forklifts] |
| Author(s): | Zhou WQ; Li C; Liu JW; Zhu MN; Gui XL; Yu F; Liao SD; Jiang F; Li GH; Jiang B; Zheng JY; |
| Address: | "Institute for Environment and Climate Research, Jinan University, Guangzhou 511443, China. Research Center for Eco-Environment Engineering, Dongguan University of Techonology, Dongguan 523808, China. College of Environment and Energy, South China University of Technology, Guangzhou 510006, China" |
| DOI: | 10.13227/j.hjkx.202107174 |
| ISSN/ISBN: | 0250-3301 (Print) 0250-3301 (Linking) |
| Abstract: | "Non-road diesel vehicle exhaust is an important emission source that affects air quality in China, yet knowledge regarding its chemical composition and potential influence factors remains limited. Six typical forklifts were selected to study the effect of diesel particulate filters (DPF) on the emission characteristics of volatile organic compounds (VOCs) and n-alkanes using online monitoring of gaseous components combined with offline analysis. The results showed that oxygenated volatile organic compounds (OVOCs), olefins, alkanes, aromatic hydrocarbons, and halogenated hydrocarbons accounted for 26%-37%, 16%-36%, 19%-22%, 13%-21%, and 4%-7% of the measured VOCs in forklift exhaust, respectively. The VOCs emission factors of low-power and high-power forklifts were(2.47+/-0.33)g.kg(-1) and (1.48+/-0.24)g.kg(-1), respectively. The forklift exhaust emission factors of total VOCs without and with DPF were(1.94+/-0.58)g.kg(-1)and (2.08+/-0.79)g.kg(-1), respectively. Our results showed that DDF exerted minor impact on VOCs emission. However, it is worth noting that DPF can efficiently remove some types of OVOCs components. For example, the emission factors of acetaldehyde and acetone of the forklifts with DPF were reduced by 19% and 26%, respectively, compared to that of those without DPF. The carbon numbers of n-alkane fractions showed a bimodal distribution of C(7)-C(17) and C(24)-C(31), respectively, with C(15) being the dominant peak carbon. The average emission factors of n-alkanes were (115+/-34) mg.kg(-1) (without DPF) and (53.7+/-19)mg.kg(-1) (with DPF), respectively, with a decrease of 53%, indicating that DPF can effectively reduce the emission of n-alkane in the exhaust of forklifts. Our results can provide scientific support for the precise control of non-road construction machinery exhaust emissions and the further improvement of regional air quality" |
| Keywords: | *Air Pollutants/analysis *Air Pollution/analysis/prevention & control Alkanes Vehicle Emissions/analysis *Volatile Organic Compounds/analysis construction machinery diesel particulate filter(DPF) emission factor n-alkanes volatile organic compounds(VOCs); |
| Notes: | "MedlineZhou, Wen-Qin Li, Cheng Liu, Jun-Wen Zhu, Man-Ni Gui, Xiao-Liang Yu, Fei Liao, Song-di Jiang, Fan Li, Guang-Hui Jiang, Bin Zheng, Jun-Yu chi China 2022/01/26 Huan Jing Ke Xue. 2022 Feb 8; 43(2):735-742. doi: 10.13227/j.hjkx.202107174" |
