从布宜诺斯艾利斯沿海地区的污水沉降颗粒中追踪金属元素，该地区位于阿根廷拉普拉塔河口。
Trace metals in settling particles from the sewage impacted Buenos Aires coastal area in the Río de la Plata estuary, Argentina.
机构信息
Laboratorio de Química Ambiental y Biogeoquímica, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, Av. Calchaqui km 23500, 1888, Florencio Varela, Buenos Aires, Argentina.
出版信息
Bull Environ Contam Toxicol. 2013 Mar;90(3):318-22. doi: 10.1007/s00128-012-0914-2. Epub 2012 Dec 11.
Sediment traps deployed in Buenos Aires sewage outfall area collected a substantial amount of material (average mass flux 22 ± 12 g cm (2) year(-1)) with very high metal concentrations, mostly in the range of hazardous exposition for organisms (Zn: 138-671, Cu: 41-273, Cr: 44-255 and Pb: 26-260 μg g(-1)). The combination of high mass fluxes and concentrations results in huge metal fluxes (0.005-0.7 to 3.6-31 g m(-2) day(-1) for minor elements and Fe, respectively). Metal concentrations were correlated to the total mass flux and total organic carbon but with different trends for redox-sensitive Fe and Mn (negative) and anthropogenic elements (positive). This reflects the key role of organic discharges promoting anoxia with Fe and Mn evasion, and also contributing toxic metals.
在布宜诺斯艾利斯污水排放口地区部署的沉积物捕集器收集了大量的物质（平均质量通量为 22 ± 12 g cm -2 年 -1 ），其中金属浓度非常高，主要处于对生物体具有危害性暴露的范围内（Zn：138-671、Cu：41-273、Cr：44-255 和 Pb：26-260 μg g -1 ）。高质量通量和浓度的结合导致了大量金属通量的产生（对于微量元素和 Fe，分别为 0.005-0.7 至 3.6-31 g m -2 天 -1 ）。金属浓度与总质量通量和总有机碳相关，但对于氧化还原敏感的 Fe 和 Mn（负相关）和人为元素（正相关）的趋势不同。这反映了有机排放物的关键作用，它促进了缺氧条件下的 Fe 和 Mn 逸出，同时也贡献了有毒金属。
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