Curso de Pós Graduação em Ciências Biológicas, área de zoologia, Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP), Campus de Rio Claro, 13506-900, Rio Claro, SP, Brazil,
Environ Sci Pollut Res Int. 2014 May;21(10):6516-24. doi: 10.1007/s11356-014-2521-8. Epub 2014 Feb 4.
Butyltin (BT) contamination was evaluated in hermit crabs from 25 estuaries and in sediments from 13 of these estuaries along about 2,000 km of the Brazilian coast. BT contamination in hermit crabs ranged from 2.22 to 1,746 ng Sn g(-1) of DBT and 1.32 to 318 ng Sn g(-1) of TBT. In sediment samples, the concentration also varied widely, from 25 to 1,304 ng Sn g(-1) of MBT, from 7 to 158 ng Sn g(-1) of DBT, and from 8 to 565 ng Sn g(-1) of TBT. BTs are still being found in surface sediments and biota of the estuaries after the international and Brazilian bans, showing heterogeneous distribution among and within estuaries. Although hermit crabs were previously tested as an indicator of recent BT contamination, the results indicate the presence of contamination, probably from resuspension of BTs from deeper water of the estuary.
在巴西沿海约 2000 公里的 25 个河口处的寄居蟹以及其中 13 个河口处的沉积物中评估了丁基锡（BT）的污染情况。寄居蟹体内的 BT 污染范围为 DBT 的 2.22 至 1746ngSn/g 和 TBT 的 1.32 至 318ngSn/g。在沉积物样本中，浓度也差异很大，从 MBT 的 25 至 1304ngSn/g、DBT 的 7 至 158ngSn/g 和 TBT 的 8 至 565ngSn/g。尽管国际和巴西已经禁止使用 BTs，但在这些河口的表层沉积物和生物群中仍然可以发现 BTs，表明其在河口之间和内部的分布具有异质性。尽管寄居蟹之前曾被用作近期 BT 污染的指示物，但结果表明存在污染，可能是由于河口深处 BT 的再悬浮所致。
