[Seasonal Variation and Source Apportionment of Water-Soluble Ions in PM in Quanzhou City].

In this study, the seasonal characteristics of water-soluble ions (WSIs) present in fine particulate matter (PM) in Quanzhou City were investigated. PM samples were collected at five different sites in the city from March 2014 to January 2015 and the concentrations of Na, NH, K, Ca, Mg, F, Cl, NO, and SO were determined by ion-exchange chromatography. In order to identify the sources of these WSIs, the positive matrix factorization (PMF) analysis was applied.

[Composition Characteristics and Sources Apportionment of Lanthanoid in PM of Quanzhou].

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.

[Geochemical Characteristics and Source Apportionment of Rare Earth Elements in the Dustfall of Quanzhou City].

Rare earth elements (REE) have certain properties as tracing elements which result in their special geochemical characteristics. In order to study the geochemical characteristics of REE in the dustfall and their sources, 34 dustfall samples were collected in five functional areas and potential source areas of Quanzhou City, then REE compositions, distribution patterns and characteristic parameters were analyzed together with ternary diagrams and characteristic parameter diagrams, for investigating the main provenance. The results showed that ∑REE in the dustfall presented significant spatial difference with the sequence of industrial area>heavy traffic area > commercial area > residential area > agricultural area.

[Characteristics and Source Apportionment of Metals in the Dustfall of Quanzhou City].

Concentrations of 23 metal elements in the dustfall collected from different functional areas of Quanzhou City, China, were determined. Several methods were applied to assess the enrichment degree, pollution level and potential ecological risk of the above elements. The sources of the above elements were analyzed based on the multivariate statistical analysis combining Pb and Sr isotopic tracing technology.