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On the chemical state and mobility of lead and other trace elements at the biogeosphere/technosphere interface
Örebro universitet, Institutionen för naturvetenskap.ORCID-id: 0000-0002-2674-4994
2002 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

Most inorganic contamination has occurred at the interface between the technosphere and the biogeosphere, even though atmospheric emissions have affected the entire globe. Several human activities now pose a substantial threat towards human health and the ecosystems. It was thus decided to study lead as an element with significant anthropogenic emissions in a variety of sources and environments. Lead and other trace elements were studied in groundwaters used for drinking water, in roadside environments, at a shooting range and in a contaminated lake in order to obtain information about mobility and redistribution in different hydrobiogeochemical environments.

It was found that 60% of the investigated drilled wells in crystalline bedrock failed to meet international health safety limits. This was mainly due to the presence of enhanced concentrations of fluoride and uranium.

Along roads the concentrations and massfluxes increased significantly for lead, as well as for otheer elements during the winter. This is most likely due to increased pavement wear as a consequence of studded tires and use of deicing salts. The mobility of trace elements also increased in the roadside soils, threatening the shallow groundwater.

At the shooting range it was found that the downward migration of lead was greater than expected and equilibrium with cerussite was suggested from solid speciation and geochemical calculations. Antimony was associated with lead and showed, despite differences in chemical properties, a similar distribution pattern. This was due to the fact that the major part of the transport at the shooting range was physical.

In the contaminated lake, several findings regarding the solid speciation of lead was confirmed and other information about redistribution into the hypolimnion from the sediment was gained.

Ort, förlag, år, upplaga, sidor
Örebro: Örebro universitetsbibliotek , 2002. , s. 42
Serie
Örebro Studies in Chemistry, ISSN 1651-4270 ; 1
Nyckelord [en]
lead, trace elements, traffic, shooting range, peat, sediments, speciation, biokemi
Nationell ämneskategori
Kemi
Forskningsämne
Kemi
Identifikatorer
URN: urn:nbn:se:oru:diva-9ISBN: 91-7668-313-3 (tryckt)OAI: oai:DiVA.org:oru-9DiVA, id: diva2:137418
Disputation
2002-10-18, Hörsal P, Örebro universitet, Fakultetsgatan 1, Örebro, 10:15
Opponent
Tillgänglig från: 2002-10-18 Skapad: 2002-10-18 Senast uppdaterad: 2017-10-18Bibliografiskt granskad
Delarbeten
1. Chemical character of drinking water from Swedish crystaline bedrock
Öppna denna publikation i ny flik eller fönster >>Chemical character of drinking water from Swedish crystaline bedrock
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Nationell ämneskategori
Kemi
Forskningsämne
Kemi
Identifikatorer
urn:nbn:se:oru:diva-15924 (URN)
Tillgänglig från: 2011-06-15 Skapad: 2011-06-15 Senast uppdaterad: 2017-10-17Bibliografiskt granskad
2. Speciation of heavy metals in road runoff and roadside total deposition
Öppna denna publikation i ny flik eller fönster >>Speciation of heavy metals in road runoff and roadside total deposition
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2003 (Engelska)Ingår i: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 147, nr 1-4, s. 343-366Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The concentrations of Cd, Co, Cu, Pb, W and Zn were measured in road runoff and total deposition at two Swedish field sites during one year. It was found that the concentrations of most elements increased significantly during the winter, up to one order of magnitude. For cobalt and tungsten, it was found that around 90% of the total mass transport occurred during the winter, whereas for Cu, Pb, Cd, Zn and Na, the corresponding figures were 70–90, 40–80, 60–90, 50–70 and >99% depending on site specific conditions. The deicing salts (rock salts) did not significantly contribute to the increase in trace element concentrations. Instead, the increased concentrations were due to more intense wearing of the pavement during the winter because of the use of studded tires in combination with the chemical effects caused by the use of deicing salts. New potential elemental markers for roads and traffic are suggested.

Nationell ämneskategori
Naturvetenskap
Forskningsämne
Miljövetenskap
Identifikatorer
urn:nbn:se:oru:diva-5196 (URN)10.1023/A:1024545916834 (DOI)
Tillgänglig från: 2009-01-30 Skapad: 2009-01-30 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
3. Mobilisation of heavy metals by deicing salts in a roadside environment
Öppna denna publikation i ny flik eller fönster >>Mobilisation of heavy metals by deicing salts in a roadside environment
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2004 (Engelska)Ingår i: Water Research, ISSN 0043-1354, E-ISSN 1879-2448, Vol. 38, nr 3, s. 720-732Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The seasonal variations of some selected heavy metals (Cd, Cu, Pb and Zn) and principal anions in soil solutions were monitored as a function of distance from the road at two field sites in Sweden. During the winter, the conductivity, concentrations of dissolved sodium and chloride increased dramatically due to the application of deicing agents (i.e. NaCl). Due to ion exchange, the pH decreased one unit in the soil solutions, whereas the concentrations of total organic carbon decreased due to coagulation and/or sorption to stationary solids. The heavy metal concentrations increased during the winter, but through different mechanisms. Cadmium concentrations in the aqueous phase increased as a response to ion exchange, possibly also enhanced by the formation of chloride complexes. Similarly, the concentrations of zinc increased, due to ion exchange, with calcium and protons. The mechanisms of mobilisation for copper and lead were not that clear probably due to association with coagulated or sorbed organic matter in combination with colloid dispersion

Nationell ämneskategori
Naturvetenskap
Forskningsämne
Miljövetenskap
Identifikatorer
urn:nbn:se:oru:diva-5200 (URN)10.1016/j.watres.2003.11.006 (DOI)
Tillgänglig från: 2009-01-30 Skapad: 2009-01-30 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
4. Metal leachability and anthropogenic signal in roadside soils estimated from sequential extraction and stable lead isotopes
Öppna denna publikation i ny flik eller fönster >>Metal leachability and anthropogenic signal in roadside soils estimated from sequential extraction and stable lead isotopes
2004 (Engelska)Ingår i: Environmental Monitoring & Assessment, ISSN 0167-6369, E-ISSN 1573-2959, Vol. 90, nr 1-3, s. 135-160Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Several roadside soil samples were collected at two field sites in Sweden. They were analysed for total elemental content (using both ICP-MS and XRF) and stable lead isotopes. Extraction with deicing salt solution and sequential extraction were performed in order to elucidate the potential mobility due to the use of deicing agents. The total concentrations of elements, especially lead, have decreased and lead is presently almost at background concentrations (15–51 ppm for surface samples). However, the isotopic signature indicates that old gasoline lead still is left at the site constructed prior to 1975. The field site constructed in 1992 showed, however, no 206Pb/207Pb ratio below 1.14. Only minor amounts were leached using deicing salt solutions; for lead only 0.29%, on average, was extracted indicating that the mobile fraction already was released. Sequential extraction indicated that lead mainly was associated with reducible (34.4%) and oxidisable (35.4%) fractions. Exchangable and acid soluble fractions contained 20.3% while 10.0% was found in the residual fraction. The salt extraction released, however, very low concentrations indicating that most in fraction 1 is acid soluble (e.g. carbonates). Tungsten was also found at high concentrations indicating a possible impact from studded tires. For tungsten the following composition was obtained: residual (48.0%) > oxidisable (47.6%) > reducible (3.3%) > exchangeable/acid soluble (1.1%). From the isotopic studies it was also suggested that the order for incorporating anthropogenic lead into soils is exchangeable/carbonates > (hydr)oxides > organic matter > residual. The multivariate technique principal component analysis (PCA) seems promising for evaluating large sequential extraction datasets.

Nationell ämneskategori
Kemi
Forskningsämne
Kemi
Identifikatorer
urn:nbn:se:oru:diva-5197 (URN)10.1023/B:EMAS.0000003572.40515.31 (DOI)
Tillgänglig från: 2009-01-30 Skapad: 2009-01-30 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
5. Factors affecting the dissolution of lead pellets in natural waters
Öppna denna publikation i ny flik eller fönster >>Factors affecting the dissolution of lead pellets in natural waters
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Nationell ämneskategori
Kemi
Forskningsämne
Kemi
Identifikatorer
urn:nbn:se:oru:diva-15925 (URN)
Tillgänglig från: 2011-06-15 Skapad: 2011-06-15 Senast uppdaterad: 2017-10-17Bibliografiskt granskad
6. Multielement contamination at a skeet and trap shooting range: I: mobility assessment through sequential extraction
Öppna denna publikation i ny flik eller fönster >>Multielement contamination at a skeet and trap shooting range: I: mobility assessment through sequential extraction
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Nationell ämneskategori
Kemi
Forskningsämne
Kemi
Identifikatorer
urn:nbn:se:oru:diva-15926 (URN)
Tillgänglig från: 2011-06-15 Skapad: 2011-06-15 Senast uppdaterad: 2017-10-17Bibliografiskt granskad
7. Multielement contamination at a skeet and trap shooting range: II: seasonal and spatial variations in surface and groundwaters
Öppna denna publikation i ny flik eller fönster >>Multielement contamination at a skeet and trap shooting range: II: seasonal and spatial variations in surface and groundwaters
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Nationell ämneskategori
Kemi
Forskningsämne
Kemi
Identifikatorer
urn:nbn:se:oru:diva-15928 (URN)
Tillgänglig från: 2011-06-15 Skapad: 2011-06-15 Senast uppdaterad: 2019-03-26Bibliografiskt granskad
8. Migration and mobility of lead and antimony from a heavily polluted lake sediment
Öppna denna publikation i ny flik eller fönster >>Migration and mobility of lead and antimony from a heavily polluted lake sediment
(Engelska)Manuskript (preprint) (Övrigt vetenskapligt)
Nationell ämneskategori
Kemi
Forskningsämne
Kemi
Identifikatorer
urn:nbn:se:oru:diva-15929 (URN)
Tillgänglig från: 2011-06-15 Skapad: 2011-06-15 Senast uppdaterad: 2017-10-17Bibliografiskt granskad

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