Centro de Estudos do Mar, Universidade Federal do Paraná, Caixa Postal 61, 83255-976, Pontal do Paraná, PR, Brazil.
Mar Pollut Bull. 2012 Dec;64(12):2867-70. doi: 10.1016/j.marpolbul.2012.08.019. Epub 2012 Sep 12.
The discharge of sewage into the Antarctic marine environments by scientific stations has resulted in local changes in these pristine sites. To assess the distribution and concentration of sewage indicators from the Brazilian Antarctic station, sediments were sampled during the 2009/10 austral summer at four points (water depth of 20 and 60 m). Concentrations of faecal sterols and linear alkylbenzenes (LABs) ranged from <0.01 to 0.17 μg g⁻¹ and <1.0 to 46.5 ng g⁻¹ dry weight, respectively. Maximum concentration of faecal sterols was similar to the value previously calculated as the background level for this area (0.19 μg g⁻¹), and it is lower than the concentration observed in previous studies (1997-2008), whereas the LABs concentrations remained practically constant (35 ng g⁻¹). Despite the low concentrations of sewage markers, the permanent human activities in the region require monitoring programs to determine continuing trends and prevent the increase of anthropogenic impacts.
科学站向南极海洋环境排放污水，导致这些原始地点发生局部变化。为评估巴西南极站污水指示物的分布和浓度，在 2009/10 年南半球夏季于四个点（水深 20 和 60 米）采集了沉积物样本。粪甾醇和直链烷基苯（LABs）的浓度范围分别为<0.01 至 0.17μg g⁻¹和<1.0 至 46.5ng g⁻¹干重。粪甾醇的最大浓度与该区域先前计算的背景水平（0.19μg g⁻¹）相似，且低于之前研究（1997-2008 年）中观察到的浓度，而 LABs 浓度基本保持不变（35ng g⁻¹）。尽管污水标记物的浓度较低，但该地区的永久性人类活动仍需要监测计划来确定持续趋势，以防止人为影响的增加。
