Assessment of Heavy Metals in Sediments of Different Functional Areas along the Yangzong Lake Coast, Yunnan Province

Abstract

Contents of Cu, Zn, Ni, Cr, Fe, Mn, V, Mo, Co, Sr, Li, Be, Cd, As, Pb, Al, Ba and Ti in 40 coast sediment samples collected from the industrial, tourism and agriculture area adjacent to Yangzong Lake Coast were analyzed. Enrichment coefficient method and potential ecological risk index method have been adopted to evaluate heavy metal pollution and ecological risk. The results showed that pollution degree of Cu, Zn, Ni, Cr, Mn, Co, V from high to low was as follows: agriculture area > tourism area > industrial area. The enrichment performance of Be, As, Cd, Al, Ti, Li, Fe from high to low was as follows: agriculture area>industrial area>tourism area. The pollution degree of Mo, Pb, Sr from high to low was as follows: industrial area > tourism area > agriculture area. The pollution degree of Ba from high to low was as follows: tourism area > industrial area > agriculture area. According to the potential ecological risk coefficients, Cd, As, Cu, Co were the most hazardous elements in industrial area, tourism area and agriculture area. The request potential ecological risk index indicated that industrial area and tourism area were low-moderate potentical ecological risk, agriculture area was moderate-considerable potentical ecological risk.