An Estimation of the Mercury Content in the Waters of the Pomeranian Baltic-Shore-Area

✍ Scribed by Wrembel, H. Z.

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 896 KB
• Volume: 11
• Category: Article
• ISSN: 0323-4320
• DOI: 10.1002/aheh.19830110505

✦ Synopsis

I n the catchment area of the Pomeranian Bay an average mercury concentration of 178 ng/l in precipitation was determined. Eight different flowing waters showed mean concentrations between 105 ng/l (Lupawa) and 500 ng/l (Odra), a pronounced annual cycle having been demonstrated for the concentrations and for the freights with the minimum in February/March and the maximum in August/September. The total freight of the eight rivers amounts to 19.5 t/a, the share of the Risla being 11 t/a. The ratio between the mercury precipitation of 335 to 410 pg/m*a Hg and the run-off varies of 30 ... 75 pg/rn?a * Hg for the individual river basins between 0.08 and 0.21. I n the Baltic Sea, the mercury concentrations are 40 ng/l in the opensea. 50 ng/l in the coastal region and 290 ... 390 ng/l near the estuaries. Trough the eight investigated rivers about 48 km3/a water run off into the Baltic Sea with about 20 t/a Hg. The total introduction of Hg into the Baltic Sea is estimated a t 100 t/a with the river water, 35 t/a with precipitation and 35 t/a with dust.