Source apportionment of metal elements in PM2.5 in a coastal city in Southeast China: Combined Pb-Sr-Nd isotopes with PMF method

作者：Wang, Shanshan; Hu, Gongren^*; Yan, Yu; Wang, Shuai; Yu, Ruilian^*; Cui, Jianyong

来源：Atmospheric Environment, 2019, 198: 302-312.

DOI：10.1016/j.atmosenv.2018.10.056

• PM2.5
• Metal elements
• Pb-Sr-Nd isotopes
• Positive matrix factorization

Combined Pb-Sr-Nd isotopes tracing technique with positive matrix factorization (PMF) analysis was used for source apportionment of metal elements in PM2.5 from Xiamen city, a coastal city in Southeast China. The results showed that the mean concentration of metal elements in PM2.5 in winter was 51.92% higher than that in summer. The air-mass backward trajectory analysis suggested that PM2.5 in Xiamen was significantly influenced by local sources during the sampling period. According to our study, metal elements in PM2.5 were mainly from plating and alloy industry and coal combustion, followed by soil and construction dusts, while traffic exhausts played a minor role. The carcinogenic risk value to human of Cr, Co, Ni and Cd, which mainly came from plating and alloy industry and soil and construction dusts, were exceeded the safe value (10(-6)), indicating the relative control measures should be taken for the above elements in PM2.5.

• 出版日期2019-2-1
• 单位华侨大学; 核工业北京地质研究院