Study on the Pollution Characteristics of Heavy Metal Ion Forms in Atmospheric Precipitation in Yunnan Region
Heavy metals,as typical pollutants,are widely present in the atmospheric environment in the form of particulate matter.They not only enter the human respiratory system through respiration,but also settle into the surface environment through atmospheric precipitation,causing soil heavy metal pollution,thereby damaging the ecosystem and causing excessive heavy metal content in crops.Analyzes and studies the pollution characteristics of heavy metal ion forms in atmospheric precipitation in Yunnan region using inductively coupled plasma mass spectrometry.The results show that heavy metal ions in atmospheric precipitation in Yunnan Province mainly exist in dissolved form,with obvious seasonal and spa-tial characteristics.The concentration of heavy metals varies in different functional areas,and the enrichment factor of heavy metal ions in atmos-pheric precipitation is strong in dissolved form.The main source of pollution is human factors.
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