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Concentrations of lead, copper and zinc in forest soils near industrial areas
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
2019 (engelsk)Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
Abstract [en]

Environmental contamination with heavy metals, especially of soils, has been a continuousproblem worldwide since the beginning of the industrial revolution. Heavy metal emissionshave increased continuously since 1900 and the metals accumulate in the environment. Pulpand paper mill factories, and factories which produce sulphuric acid emit heavy metals,among others lead (Pb), copper (Cu) and zinc (Zn). Results from previous studies showedthat the soils near factories had higher concentrations of these pollutants than the controlplace. In this study I want to determine the effects of industrial heavy metal emissions of onehistoric and one present industry on nearby soil heavy metal concentrations.Samples were taken near one historically heavily contaminated site, the old sulphite factoryin Rydöbruk (1897-1944) and near the present Stora Enso paper mill in Hyltebruk. As acontrol site, I compared these with Rocknen nature reserve area.At each site I took 6 soil samples, representing the top 15-20 cm of soil and organic material.Samples were analysed with an Atomic Absorption Spectrometer and the concentrations oflead, copper and zinc were determined per ashed dry material.I analyzed the samples at the laboratory using the guideline from the Swedish StandardInstitute for water analysis.The concentrations of the soil samples showed no significant difference between the naturereserve area and the industrial sites (One-way ANOVA). This was due to very variableorganic content within and between the sites.Organic content of the samples has a significantly effect on the metal concentrations for Pband Cu (Linear Regression test). In conclusion, metals can accumulate in the vegetation, andin case of Pb and Cu there is a correlation between their concentration and the amount oforganic matter. Therefore in future studies it is best if soil with very high organic content orvegetation is used to determine if forest soil near industries are affected by past or presentindustrial emissions of heavy metals.

sted, utgiver, år, opplag, sider
2019. , s. 43
Emneord [en]
heavy metal, toxicity, soil, paper mill, emission, accumulation, human health, vegetation
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-40363OAI: oai:DiVA.org:hh-40363DiVA, id: diva2:1340911
Fag / kurs
Environmental Science
Utdanningsprogram
Master's Programme in Applied Environmental Science
Presentation
2019-05-29, Högskolan I Halmstad, Kristian IV:s väg 3, 301 18 Halmstad, Halmstad, 20:52 (svensk)
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Examiner
Tilgjengelig fra: 2019-08-08 Laget: 2019-08-06 Sist oppdatert: 2019-08-12bibliografisk kontrollert

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