Metodutveckling för analys av klorfenoler i jord samt analys av förorenad jord från ett sågverk
Independent thesis Advanced level (degree of Magister), 20 points / 30 hpStudent thesis
In this final thesis, an existing method for analysis of chlorophenols (CP) in bottom sediments has been updated and adjusted for analysis of chlorophenols in soil. The covalent bonds between the chlorophenols and the soil matrix were broken through basic hydrolysis and the chlorophenols were then separated from the water phase through addition of sulphuric acid followed by ether extraction. The chromatography was improved through extractive acetylation of the chlorophenols.
The updated method was then applied on soil samples from a contaminated area (a former sawmill in Hyttsjö, Östergötland, Sweden).
The analyse was preformed by GC/MS with respect to 2-MonoCP, 4-MonoCP, 2,4-DiCP, 2,6-DiCP, 2,4,6-TriCP, 2,3,4,6-TetraCP and pentachlorophenol (PCP).
Contamination of chlorophenols in nature can be explained by the former use of wood preservative chemicals based on chlorophenols. In the 1960s and the 1970s these chemicals were used in Sweden, but due to their toxicity they were banned by the Swedish government in 1978.
In Hyttsjö a pentachlorophenol-based product named Santobrite was used for several years. The concentration of PCP in the soil samples from Hyttsjö varied from 0.2->1.8 ng/mg dry substance. 2,3,4,6- Tetrachlorophenol was also detected in some of the soil samples.
Place, publisher, year, edition, pages
Institutionen för fysik, kemi och biologi , 2007. , 53 p.
chlorophenols, PCP, soil, extractive acetylation, contaminated area, sawmill, Hyttsjö, GC/MS, wood preservative, Santobrite
IdentifiersURN: urn:nbn:se:liu:diva-10047ISRN: LITH-IFM-EX--06/1658--SEOAI: oai:DiVA.org:liu-10047DiVA: diva2:16795