Method optimization to measure polybrominated diphenyl ether (PBDE) concentrations in soils of Bratislava, Slovakia |
| |
Authors: | Ute Rita Thorenz Jaroslava Sobocka |
| |
Affiliation: | a Earth System Science Research Center, Geographic Institute, Professorship of Soil Geography/Soil Science, Johannes Gutenberg University, Johann Joachim Becher-Weg 21, 55128 Mainz, Germany b Soil Science and Conservation Research Institute, Gagarinova 10, 82713 Bratislava, Slovakia c Geographic Institute, University of Berne, Hallerstrasse 12, 3012 Berne, Switzerland |
| |
Abstract: | We modified an analytical method to determine polybrominated diphenyl ethers (PBDEs) in urban soils of Bratislava (Slovakia). Gel permeation chromatography (GPC) introduced as a clean-up step for soil extracts substantially reduced matrix enhancements when PBDEs were measured with gas chromatography-negative chemical ionization-mass spectrometry (GC-NCI-MS). The resulting method proved to be accurate, precise, and showed low detection limits. The sum of 15 PBDE concentrations in surface horizons of Bratislava soils ranged from 87 to 627 pg g−1. PBDE concentrations were mostly higher in surface than deeper horizons probably because of atmospheric deposition and lack of substantial vertical transport. Lower brominated PBDEs undergo more soil-atmosphere exchanges or are more scavenged and transferred with litter fall to the soil organic matter than higher brominated ones as suggested by the correlation between lower brominated PBDEs and soil organic C (Corg) concentrations. |
| |
Keywords: | Environmental fate Gel permeation chromatography (GPC) Negative chemical ionization (NCI) Polybrominated diphenyl ethers (PBDEs) Urban soils |
本文献已被 ScienceDirect 等数据库收录! |
|