Characteristics, sources, and health risks of ambient nanoparticles (PM0.1) bound metal in Bangkok, Thailand
Characteristics, sources, and health risks of ambient nanoparticles (PM0.1) bound metal in Bangkok, Thailand
复制标题
DOI：
10.1016/j.aeaoa.2021.100141
复制
发表时间：
2021-11-17
影响因子：
4.6
通讯作者：
Hata, Mitsuhiko
中科院分区：
文献类型：
--
作者：
Phairuang, Worradorn;Suwattiga, Panwadee;Hata, Mitsuhiko
本研究的目的是表征泰国曼谷的环境纳米颗粒（PM0.1）结合的金属，并评估这些材料对人类的健康风险。2014年11月至2015年10月期间进行了为期一年的抽样活动。PM0.1质量浓度范围为10至27 μ g/m3，平均PM0.1质量浓度为15 +/-2 μ g/m3。13种元素的总浓度为345 +/-31 ng/m3，以Fe、K、Na、Al、Cu、Mg和Zn（> 10 ng/m3）为主。总元素浓度最高出现在冷干季，其次是热干季和湿季。主成分分析（PCA）表明，PM0.1的主要来源是来自道路交通，工业部门和生物质燃烧。高浓度的金属发现在寒冷的旱季表明，PM0.1结合金属来自道路交通和生物质燃烧从邻近地区被运到曼谷。高水平的K表明生物质燃烧是冷干季的主要来源。所有致癌元素对成人的总致癌风险为5.84 × 10（-6），未超过可接受风险评估范围的上限。研究结果进一步明确了PM0.1颗粒物的排放源分布和模式，对控制和减缓城市PM0.1颗粒物的排放具有一定的参考价值。
The objective of this study was to characterize ambient nanoparticles (PM0.1)-bound metals in Bangkok, Thailand and assess the health risks of these materials to human. A year-long sampling campaign was conducted between November 2014 and October 2015. The PM0.1 mass concentration ranged from 10 to 27 mu g/m(3), and the average PM0.1 mass concentration was 15 +/- 2 mu g/m(3). The total concentration of the thirteen elements was 345 +/- 31 ng/m(3), with Fe, K, Na, Al, Cu, Mg, and Zn (>10 ng/m(3)) being the dominant species. The highest total element concentration occurred in the cold dry season followed by the hot dry and wet seasons. A principal component analysis (PCA) indicated that the primary sources of PM0.1 were derived from road traffic, the industrial sector, and biomass burning. The high concentrations of metals found in the cold dry season suggest that PM0.1-bound metal derived from road traffic and biomass burning from neighboring areas were transported to Bangkok. High level of K indicates that biomass burning was a major source during cold dry season. Total cancer risk from all the carcinogenic elements was 5.84 x 10(-6) in adults, which does not exceed the upper limit of the acceptable risk assessment range. The findings of this study provide further clarification of the emission source profile and the pattern of PM0.1 particles and should be of value for emission control and mitigation of PM emission in an urban area.