Resumen
Different extraction and clean-up methods for the determination of polychlorinated biphenyls (PCBs) in sewage sludge-amended soil were investigated. Soxhlet extraction with hexane-acetone (41:59) and simultaneous elimination of sulphur, with recently precipitated copper, and Florisil cartridge clean-up provided the best results. High-resolution GC with electron-capture detection achieved accurate identification and quantification of the PCBs. Initial pollutant concentrations in soil amended with sewage sludge ranged from 0.5 to 94 ng/g for PCB congeners. The weathering of the PCBs in sludged soil was monitored for a 168-day period. The results indicated that PCBs were persistent.
Idioma original | Inglés |
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Páginas (desde-hasta) | 121-130 |
Número de páginas | 10 |
Publicación | Journal of Chromatography A |
Volumen | 719 |
N.º | 1 |
DOI | |
Estado | Publicada - 5 ene 1996 |