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首页> 外文期刊>Oceanologia >First records of Ponto-Caspian gammarids in the Gulf of Gdańsk (southern Baltic Sea)
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First records of Ponto-Caspian gammarids in the Gulf of Gdańsk (southern Baltic Sea)

机译：在Gdańsk湾（南波罗的海）的普托托 - 海参吉​​姆拉德术纪录

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In this study the activity of uranium isotopes 234U and 238U in Odra river watersamples, collected from October 2003 to July 2004, was measured using alphaspectrometry. The uranium concentrations were different in each of the seasonsanalysed; the lowest values were recorded in summer. In all seasons, uraniumconcentrations were the highest in Bystrzyca river waters (from 27.81±0.29 Bq m?3of 234U and 17.82 ± 0.23 Bq m?3 of 238U in spring to 194.76± 3.43 Bq m?3 of 234Uand 134.88 ± 2.85 Bq m?3 of 238U in summer). The lowest concentrations werenoted in the Ma?a Panew (from 1.33 ± 0.02 Bq m?3 of 234U and 1.06 ± 0.02 Bq m?3of 238U in spring to 3.52 ± 0.05 Bq m?3 of 234U and 2.59 ± 0.04 Bq m?3 of 238Uin autumn). The uranium radionuclides 234U and 238U in the water samples werenot in radioactive equilibrium. The 234U/238U activity ratios were the highest in Odra water samples collected at G?ogów (1.84 in autumn), and the lowest in waterfrom the Note? (1.03 in winter and spring). The 234U/238U activity ratio decreasesalong the main stream of the Odra, owing to changes in the salinity of the river’swaters. Annually, 8.19 tons of uranium (126.29 GBq of 234U and 100.80 GBq of238U) flow into the Szczecin Lagoon with Odra river waters.
机译：在这项研究中，使用alphaspectramry测量从2003年10月至2004年7月收集的Odra河水域中铀同位素234U和238U的活性。铀浓浓度在每个季节癌症中都不同;夏季记录了最低值。在所有季节，铀育中厚度是Bystrzyca河水中最高的（从27.81±0.29 bq m？3of 234u和17.82±0.23 bq m？32u 23 of 238u，共338°3±3.43 bq m？3 of 234uand 134.88±2.85 bq m？夏天的3个共238U）。在MA中的最低浓度（从1.33±0.02 bqm≥30，从1.33±0.02 bqm≤xm≤3.52±0.05 bqm≤3.34u和2.59±0.04 bq m？3 238u秋天）。在水样中的铀放射核素234U和238U在放射性平衡中的水样中。 234U / 238U的活性比是在G？ogów（秋季1.84）收集的ODRA水样中最高的oDRA水样，纸币中最低的纸张？ （冬季和春季1.03）。由于河流的盐度变化，234U / 238U活动比率减少了ODRA的主流。每年，8.19吨铀（126.29 GBQ 234U和100.80 GBQ的238U）流入与Odra河水的Szczecin泻湖。

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