Composition Characteristics and Sources Apportionment of Lanthanoid in PM 2.5 of Quanzhou

• Published in: Huanjing kexue Vol. 38; no. 7; p. 2698
• Main Authors: Zhang, Yun-Feng, Yu, Rui-Lian, Hu, Gong-Ren, Sun, Jing-Wei, Xu, Wen-Zhi, Zhang, Zong-Wei
• Format: Journal Article
• Language: Chinese
• Published: China 08.07.2017
• Subjects: Quanzhou; chemical mass balance(CMB); lanthanoid; source apportionment; PM2.5
• ISSN: 0250-3301

Samples of PM were collected from 5 sites in Quanzhou in March, April and July, 2014. The concentrations of lanthanoid and other trace metals in the PM were determined by Inductively Coupled Plasma Mass Spectrometry(ICP-MS). The total lanthanoid concentration (Σ ), the ratio of light-lanthanoid(L Loid, including, La, Ce, Pr, Nd, Sm and Eu) to heavy-lanthanoid(H Loid, including Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) in PM were 2.490-5.708 ng·m (65.682-126.529 μg·g ) and 12.086-14.319, respectively. The distribution pattern of Loid in PM was also evaluated in this study. All PM samples showed similar distribution pattern with local topsoil. And positive Ce and negative Eu anomalies were observed in PM . La-Ce-V plots and chemical mass balance(CMB) model were used for source identification and apportionment of PM in Quanzhou. The CMB model was used to identify four main sources:urban fugitive dust, coal combustion, vehicle exhaust and waste incineration emission which had a contribution of 18.9%, 10.9%, 30.6% and 30