文献类型：期刊文献

英文题名：Characterizing pollutant emissions from mosquito repellents incenses and implications in risk assessment of human health

作者：Wang, Lina[1];Zheng, Xinran[1];Stevanovic, Svetlana[2];Xiang, Zhiyuan[1];Shi, Huiwen[3];Liu, Jing[3,4];Yu, Mingzhou[5];Zhu, Chun[6]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai, Peoples R China;[2]Queensland Univ Sci & Technol, Int Lab Air Qual & Hlth, Brisbane, Qld, Australia;[3]Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing 10008, Peoples R China;[4]Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin, Heilongjiang, Peoples R China;[5]China Jiliang Univ, Hangzhou 310028, Zhejiang, Peoples R China;[6]Shanghai Res Inst Bldg Sci Grp, Shanghai 201108, Peoples R China

年份：2018

卷号：191

起止页码：962

外文期刊名：CHEMOSPHERE

收录：;EI(收录号：20174404322794);WOS:【SCI-EXPANDED(收录号:WOS:000418208000105)】；

基金：This work was supported by National Science Foundation of China NO. 91543120, Shanghai Natural Science Fund No.14ZR1435600. In addition, We would thank our colleague Fan Na, Liu Fang, Shen Siqing, Yao Xiaolong for their assistance during the experiments.

语种：英文

外文关键词：Particulate and gaseous pollutant; Mosquito-repellent incense; Emission factors; Emission rates; Health exposure

摘要：Mosquito-repellent incense is one of the most popular products used for dispelling mosquitos during summer in China. It releases large amounts of particulate and gaseous pollutants which constitute a potential hazard to human health. We conducted chamber experiment to characterize major pollutants from three types of mosquito-repellent incenses, further assessed the size-fractionated deposition in human respiratory system, and evaluated the indoor removing efficiency by fresh air. Results showed that the released pollutant concentrations were greater than permissible levels in regulations in GB3095-2012, as well as suggested by the World Health Organization (WHO). Formaldehyde accounted for 10-20% of the total amount of pollutants. Fine particles dominated in the total particulate concentrations. Geometric standard deviation (GSD) of particle number size distributions was in the range of 1.45-1.93. Count median diameter (CMD) ranged from 100 to 500 nm. Emission rates, burning rates and emission factors of both particulate and gaseous pollutants were compared and discussed. The deposition fractions in pulmonary airway from the disc solid types reached up to 52.7% of the total deposition, and the largest deposition appeared on juvenile group. Computational Fluid Dynamics (CFD) modellings indicated air conditioner on and windows closed was the worst case. The highest concentration was 180-200 times over the standard limit. (C) 2017 Elsevier Ltd. All rights reserved.