[Characteristics of Elements and Potential Ecological Risk Assessment of Heavy Metals in PM at the Southwest Suburb of Chengdu in Spring].

PM samples were collected at the southwest suburb of Chengdu in spring (in May 2012 and 2014). The mass concentrations of PM were determined by the weight method, and 24 chemical elements in PM were analyzed by XRF. To study the pollution characteristics and sources of chemical elements, and the potential ecological risk of heavy metals in PM, the Geo-accumulation Index, Enrichment Factor, and Potential Ecological Risk Index methods were applied, respectively.

[Pollution Level and Source Apportionment of Atmospheric Particles PM₂.₅ in Southwest Suburb of Chengdu in Spring].

In order to understand the characteristics of PM₂.₅ pollution in the atmosphere of Chengdu southwest suburb, PM₂.₅ particles in Chengdu southwest suburb were collected and analyzed from March 18 to March 31st, 2015.