Temporal variations in dissolved and suspended iron and manganese in the Kalix River, northern Sweden

Thallium isotope composition of the upper continental crust and rivers—An investigation of the continental sources of dissolved marine thallium

“…Following this maximum, the Fe concentration drops rapidly to a minimum with Fe contents of ϳ25-100 g/g (Ponter et al, 1990;Andersson et al, 2001a). The Kalix River sample analyzed in the present study (from June 16, 1997) has a Fe concentration of only 2 g/L (Table 6, Fig.…”

Colloidal rare earth elements in a boreal river: Changing sources and distributions during the spring flood

“…The Kalix River, an unregulated pristine boreal river system, has previously been well characterized in several studies on major and trace elements and isotopes (Pontér et al, 1990;Ö hlander et al, 1991Ingri and Widerlund, 1994;Ingri et al, 1997Ingri et al, , 2000Ingri et al, , 2005Porcelli et al, 1997;Ö hlander, 1997, 2000;Andersson et al, 1998Andersson et al, , 2001Land et al, 1999aLand et al, ,b, 2000aDahlqvist et al, 2004). The study by Ingri et al (2000) showed that transport of REE in the Kalix River was closely associated with colloidal particles rich in C, Fe and Al.…”

Hydrogeochemistry of Fe and Mn in small boreal streams: The role of seasonality, landscape type and scale

“…An increase of dissolved concentrations of Fe and Mn by a factor of 10-20 during spring flood has been reported (Borg, 1986;Pontér et al, 1990;Borg et al, 1995;Rember and Trefry, 2004;Holemann et al, 2005). Moreover, several studies (Pontér et al, 1990;Shafer et al, 1997;Sherrell and Ross, 1999) have shown the importance of suspended particulate matter (SPM) as a carrier for Fe, Mn and other trace metals. However, previous studies of temporal variations of Fe and Mn in running waters have not given any special attention to the spatial and temporal patterns of an entire stream network.…”

“…In these regions the spring flood is the major annual hydrological event, resulting in increased concentrations of trace metals, suspended particulate matter (SPM) (Pontér et al, 1992;Rember and Trefry, 2004;Holemann et al, 2005) and DOC (Shafer et al, 1997;Rember and Trefry, 2004) whereas major elements are diluted (Ingri et al, 2005;Buffam et al, 2007). An increase of dissolved concentrations of Fe and Mn by a factor of 10-20 during spring flood has been reported (Borg, 1986;Pontér et al, 1990;Borg et al, 1995;Rember and Trefry, 2004;Holemann et al, 2005). Moreover, several studies (Pontér et al, 1990;Shafer et al, 1997;Sherrell and Ross, 1999) have shown the importance of suspended particulate matter (SPM) as a carrier for Fe, Mn and other trace metals.…”

“…A number of recent studies have been carried out in both streams and rivers at high latitudes to study the temporal behavior of major elements (Pekka et al, 2004;Ingri et al, 2005;Cory et al, 2006), trace elements (Pontér et al, 1990;Shiller, 1997;Pokrovsky and Schott, 2002;Rember and Trefry, 2004) and DOC Finlay et al, 2006;Buffam et al, 2007). In these regions the spring flood is the major annual hydrological event, resulting in increased concentrations of trace metals, suspended particulate matter (SPM) (Pontér et al, 1992;Rember and Trefry, 2004;Holemann et al, 2005) and DOC (Shafer et al, 1997;Rember and Trefry, 2004) whereas major elements are diluted (Ingri et al, 2005;Buffam et al, 2007).…”