Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, Guangdong, PR China.
Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, Guangdong, PR China.
Mar Pollut Bull. 2020 Feb;151:110866. doi: 10.1016/j.marpolbul.2019.110866. Epub 2020 Jan 29.
Sediments were collected from urban mangroves in Shenzhen, China, including Shajing (SJ) and Xixiang (XX) featured with industrial district; Futian (FT) and Baguang (BG) featured with central business district and ecological preserve, respectively. Distributions, pollution levels and human health risks of Hg were explored. In both surface and vertical sediments, mean Hg concentration was highest in SJ mangrove, which may be due to its proximity to point-source discharge of Maozhou River in Pearl River Estuary, China. Sediment properties (pH, salinity, TOC and particle size) had limited impact on Hg accumulation due to their non-significant correlations. Geo-accumulation index, pollution load index, potential ecological risk index, and the ecological risk assessment code showed the highest ecological risk in SJ mangrove, followed by XX, FT, and BG mangroves. The assessment of human health risks showed that public experience little adverse health risk due to exposure to Hg polluted sediment in urban mangroves.
在中国深圳的城市红树林中采集了沉积物，包括具有工业区特征的沙井（SJ）和西乡（XX）；以及具有中央商务区和生态保护区特征的福田（FT）和八卦岭（BG）。探讨了 Hg 的分布、污染水平和对人类健康的风险。在表层和垂直沉积物中，SJ 红树林的 Hg 浓度最高，这可能是由于其靠近珠江口茅洲河的点源排放。由于沉积物性质（pH 值、盐度、TOC 和粒径）与 Hg 积累之间没有显著相关性，因此对 Hg 积累的影响有限。地质累积指数、污染负荷指数、潜在生态风险指数和生态风险评估代码显示 SJ 红树林的生态风险最高，其次是 XX、FT 和 BG 红树林。对人类健康风险的评估表明，由于暴露于城市红树林中受 Hg 污染的沉积物，公众面临的健康风险很小。
