Characteristics and environmental significance of rare earth elements in PM2.5 of Nanchang, China
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- 作者：Yang ZHAO (赵 阳)a ; b ; Ruilian YU (于瑞莲)a ; ruiliany@hqu.edu.cn ; Gongren HU (胡恭任)a ; grhu@hqu.edu.cn ; Xiaohui LIN (林晓辉)a ; Xianrong LIU (刘贤荣)a
- 关键词：PM2.5 ; rare earth elements ; composition characteristics ; distribution pattern ; enrichment factor
- 刊名：Journal of Rare Earths
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：35
- 期：1
- 页码：98-106
- 全文大小：1944 K
- 卷排序：35
文摘
Concentrations of sixteen rare earth elements (REEs) in PM2.5 and potential-source samples, collected in Nanchang city in mid-September 2013, were determined by inductively coupled plasma mass spectrometry (ICP-MS). The results showed that the concentrations of total REEs (∑REE) ranged from 78.76 to 1351 ng/mg. The order of REEs in PM2.5 samples showed the anthropogenic effects, Ce and Eu were affected more than the other REEs according to the enrichment factors. The results of chondrite-normalized REEs patterns and characteristic parameters showed evident light REEs fractionation, and positive anomalies of Ce and Eu in PM2.5. The other non-local pollution sources affected the PM2.5 samples, according to the triangular diagram of La, Ce and Sm compositions and plot of ∑REE vs δEu. Moreover, plot of (La/Sm)N vs (Gd/Yb)N revealed the effects of local sources. In conclusion, the REEs in potential-source samples were close to the background of local soil, while the REEs in PM2.5 samples in Nanchang city were jointly affected by the investigated local sources and other non-local sources.