Investigation of Lead and Cadmium Content of Plant Leaves along A Ring Road In Beijing

摘要

The contents of lead and cadmium in the leaves of Chinese Rose along 4th ring roads in Beijing were determined respectively, and index of air environment pollution of plants was introduced to study the relationship between the content of lead and cadmium in leaves and air pollution. The results revealed that the air quality based from lead content in leaves at many locations belong to strongly polluted status, while the air quality based on cadmium content of Chinese Rose leaves at many location belonged to extremely polluted status. It is practical to evaluate air pollution conditions using content of heavy metal (such as lead and cadmium) in leaves of plant.