The Swedish National Monitoring Programme for Contaminants in Freshwater Biota (until 2018 year’s data)

• The report summarises the monitoring activities within the National Swedish Contaminant Programme for freshwater biota. Each monitored contaminant has been examined in pike, perch or Arctic char from 32 lakes from the north to the south in Sweden. No general trend could be seen for mercury, and all samples were above the EU threshold. Lead was generally decreasing and concentrations were below the target level in all lakes. Cadmium concentrations showed no consistent trends over the monitored period, and cadmium concentrations were below the target level in all lakes. Nickel, arsenic, and copper showed upward trends in 30-50 % of the sampling sites. For zink, silver, and aluminium there were no clear temporal trends. Tin concentrations were below the limit of quantification for most sampling sites and throughout all years of sampling.In general, downward trends were seen for; PCBs, HCHs, DDT, DDE and PCDD/Fs in all species (with a few exceptions). The chlorinated compounds generally showed a somewhat higher concentration in the southern parts of Sweden. Most chlorinated compounds were below the suggested target levels. No general trend was seen during the monitoring period for PBDEs. However during the most recent 10 year period, downward trends were seen in pike from Bolmen. The concentration of HBCDD was under LOQ in a majority of the samples.Several of the perfluorinated carboxylic compounds showed an increase in concentration in arctic char, while no trend was seen for PFOS. In perch, PFOS has decreased since 1980 while upward trends were seen for several carboxylic acids from 1980. Higher concentrations of perfluorinated compounds can in general be seen in the southern part of Sweden. In all lakes, PFOS is below the target level for all species.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)

Nyckelord

Miljögifter

tidstrender

spatiala trender

DDT

PCB

HCH

HCB

dioxiner

furaner

metaller

Pb

Cd

Cu

Zn

Cr

Ni

Ag

As

Sn

Al

PBDE

HBCDD

PFAS

PFOS

biota

Abiskojaure

Allgjuttern

Bolmen

Brännträsket

Bysjön

Bästeträsk

Degervattnet

Fräcksjön

Fysingen

Gipsjön

Hjärtsjön

Horsan

Krageholmssjön

Krankesjön

Fiolen

Lilla Öresjön

Limmingssjön

Remmarsjön

Skärgölen

Spjutsjön

Stensjön

Stora Envättern

Stora Skärsjön

Stor-Backsjön

Stor-Björsjön

Storvindeln

Svartsjön

Sännen

Tjulträsk

Tärnan

Älgsjön

Övre Skärsjön

Freshwater

Sötvatten

A Non-Toxic Environment

Giftfri miljö

Flourishing Lakes and Streams

Levande sjöar och vattendrag

Publikations- och innehållstyp

vet (ämneskategori)

rap (ämneskategori)