树叶燃烧排放烟尘中水溶性离子的组成

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Abstract

Water-soluble ions in particulate matter (PM) from leaf combustion were determined. The results showed that Cl^-, SO₄^2-, Na⁺, NH₄⁺, K⁺, and Mg²⁺ existed in flaming PM from green leaves. The average content of total water-soluble ions was 45.02g/kg. Cl^-, SO₄^2-, and K⁺ were the major components. The mean emission factor (EF) for the total ions was 2.43g/kg. The ion types in smoldering PM from green leaf combustion were similar to those in flaming PM, except that NO₃^- was found instead of SO₄^2-. The mean content for the total ions was 9.95g/kg. The main constituents were Cl^- and NH₄⁺. The mean EF for the all ions was 1.04g/kg. Ca²⁺ occurred in flaming PM from fallen leaves besides the ions found in flaming PM from green leaves. The average content of the total ions was 56.40g/kg. Their major components were Cland SO₄^2-. In addition, the mean EF of the all ions was 0.96g/kg. The types of ions found in smoldering PM from fallen leaves were the same as in flaming PM. The mean content of the ions was 16.86g/kg. SO₄^2- was the main component. The mean EF for the total ions was 1.43g/kg. Both contents in PM and EFs for most of the ions from green or fallen leaves varied with leaf types while burned under each condition. Flaming combustion was in favor of ion emission relative to smoldering one for green leaves. The situation was just opposite for fallen leaves.

Key words： leaf water-soluble ion combustion smoke emission factor

Received: 27 May 2017

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	Articles by authors
	LIU Gang
	LI Jiu-hai
	XU Hui
	WU Dan
	CHEN Hui-yu
	YANG Wei-zong

Cite this article:

LIU Gang,LI Jiu-hai,XU Hui等. Chemical composition of water-soluble ions in smoke from leaf combustion[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(12): 4480-4486.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I12/4480

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