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Assessment of mercury speciation in contaminated soils prior to remediation

Kapitel i bok
Författare Fabian Taube
Publicerad i Solid Waste Management and Environmental Remediation
ISBN 978-1-60741-761-3
Förlag Nova Science Publishers
Förlagsort Hauppauge NY, USA
Publiceringsår 2010
Publicerad vid Institutionen för medicin, avdelningen för samhällsmedicin och folkhälsa
Språk en
Länkar https://www.novapublishers.com/cata...
Ämnesord Mercury speciation, Soil remediation, Elemental mercury, Inorganic mercury, Methylated mercury, Thermal treatment, Chlor-alkali, XRD, XPS, GC-ICP-MS, ESEM
Ämneskategorier Lösningskemi, Tungmetaller och övriga metaller, Annan geovetenskap och miljövetenskap

Sammanfattning

In a recent study, the type and amount of mercury species present in a soil from a former industrial area of a chlor-alkali plant were investigated, with the purpose of studying chemical effects from thermal treatment of the soil at different temperatures. The findings presented in the study shows the need for accurate assessment of the speciation of mercury in the soil, before considering remediation. From this particular study it can be questioned what particular type of remediation method that should be used in soils low on soil organic matter , but more importantly, it can be questioned whether there is an actual need for remediation of the soil or not. The conclusion to be drawn from the study was that in soils low on soil organic matter, the formation of inorganic salts might play a major role for the mercury speciation, and probably also for the bioaccumulation of mercury in nearby lakes and river sediments. In soils with no or little natural organic matter, it therefore seems reasonable to assume that the bioaccessibility and bioaccumulation of mercury will be very limited. The study opens up the question whether soil remediation is reasonable, from an environmental and an economical perspective, in this particular case, and in similar cases, where mercury is tightly bound as mercury salts.

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