Suvarapu Lakshmi Narayana, Baek Sung-Ok
Department of Environmental Engineering, Yeungnam University, Gyeongsan-Si, Republic of Korea.
Toxicol Ind Health. 2017 Jan;33(1):79-96. doi: 10.1177/0748233716654827. Epub 2016 Jul 9.
Heavy metal determination in ambient air is an important task for environmental researchers because of their toxicity to human beings. Some heavy metals (hexavalent chromium (Cr), arsenic (As), cadmium (Cd) and nickel (Ni)) have been listed as carcinogens. Furthermore, heavy metals in the atmosphere can accumulate in various plants and animals and enter humans through the food chain. This article reviews the determination of heavy metals in the atmosphere in different areas of the world since 2006. The results showed that most researchers concentrated on toxic metals, such as Cr, Cd, Ni, As and lead. A few studies used plant materials as bio-monitors for the atmospheric levels of heavy metals. Some researchers found higher concentrations of heavy metals surrounding industrial areas compared with residential and/or commercial areas. Most studies reported the major sources of the particulate matter and heavy metals in the atmosphere to be industrial emissions, vehicular emissions and secondary aerosols.
由于重金属对人类具有毒性，因此测定环境空气中的重金属是环境研究人员的一项重要任务。一些重金属（六价铬（Cr）、砷（As）、镉（Cd）和镍（Ni））已被列为致癌物。此外，大气中的重金属会在各种动植物体内积累，并通过食物链进入人体。本文综述了自2006年以来世界不同地区大气中重金属的测定情况。结果表明，大多数研究人员关注的是有毒金属，如Cr、Cd、Ni、As和铅。少数研究使用植物材料作为大气中重金属含量的生物监测器。一些研究人员发现，与居民区和/或商业区相比，工业区周围的重金属浓度更高。大多数研究报告称，大气中颗粒物和重金属的主要来源是工业排放、车辆排放和二次气溶胶。
