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Sammanfattning

The variability of mercury (Hg) levels in Swedish freshwater fish during almost 50 years was assessed based on a compilation of 44 927 observations from 2881 waters. To obtain comparable values, individual Hg concentrations of fish from any species and of any size were normalized to correspond to a standard 1-kg pike [median: 0.69 mg kg(-1) wet weight (ww), mean +/- SD: 0.84 +/- 0.67 mg kg(-1) ww]. The EU Environmental Quality Standard of 0.02 mg kg(-1) was exceeded in all waters, while the guideline set by FAO/WHO for Hg levels in fish used for human consumption (0.5-1.0 mg kg(-1)) was exceeded in 52.5 % of Swedish waters after 2000. Different trend analysis approaches indicated an overall long-term decline of at least 20 % during 1965-2012 but trends did not follow any consistent regional pattern. During the latest decade (2003-2012), however, a spatial gradient has emerged with decreasing trends predominating in southwestern Sweden.

Nyckelord

Mercury; Freshwater; Environmental Quality Standard; Trend analysis

Publicerad i

AMBIO: A Journal of the Human Environment
2014, volym: 43, nummer: 1, sidor: 91-103
Utgivare: SPRINGER

SLU författare

Associerade SLU-program

Organiska risksubstanser och metaller (t.o.m. maj 2010)
Giftfri miljö
Använder FOMA data

Globala målen (SDG)

SDG14 Hav och marina resurser

UKÄ forskningsämne

Arbetsmedicin och miljömedicin
Miljövetenskap

Publikationens identifierare

  • DOI: https://doi.org/10.1007/s13280-014-0564-1

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/65083