期刊
ENVIRONMENTAL POLLUTION
卷 253, 期 -, 页码 930-938出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2019.07.038
关键词
Black carbon; Perchlorate; Cogeneration; Metal; Fireworks; Lake water system
资金
- Department of Science and Technology (DST), India
- Daugherty Water for Food Global Institute at the University of Nebraska
- Indo-US Science and Technology Forum under the Water Advanced Research and Innovation (WARI) program (IUSSTF/WARI Fellowship) [2015-16/f-4-2015]
The imprints of fireworks displays on the adjacent water body were investigated from the perspective of cogeneration of black carbon, metals and perchlorate (ClO4-). In particular, the mixing and dissipation of ClO4- were studied at Oak Lake, Lincoln, Nebraska, following fireworks displays in 2015 and 2016. Following the display, ClO4- concentration in the water increased up to 4.3 mu g/L and 4.0 mu g/L in 2015 and 2016, respectively. A first-order model generally provided a good fit to the measured perchlorate concentrations from which the rate of dissipation was estimated as 0.07 d(-1) in 2015 and 0.43 d(-1) in 2016. SEM images show imprints of soot and metal particles in aerosol samples. EDS analysis of the lake sediment confirmed the presence of Si, K, Ca, Zn and Ba, most of which are components of fireworks. The delta C-13 range of -7.55 parts per thousand to -9.19 parts per thousand in the lake water system closely resembles fire-generated carbon. Cogeneration of black carbon and metal with perchlorate was established, indicating that ClO(4)(- )is an excellent marker of fireworks or a burning event over all other analyzed parameters. Future microcosmic, aggregation and column-based transport studies on black carbon in the presence of perchlorate and metals under different environmental conditions will help in developing transport and fate models for perchlorate and black carbon particles. (C) 2019 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据