Faculty of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu, Fukuoka 808-0135, Japan; Environment Monitoring Center of Ningbo,105 Baoshan Street, Ningbo 315012, China.
Faculty of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino, Wakamatsu, Kitakyushu, Fukuoka 808-0135, Japan.
Chemosphere. 2014 Mar;99:109-16. doi: 10.1016/j.chemosphere.2013.10.038. Epub 2013 Nov 9.
Urban societies are using an increasingly diverse array of chemicals, many of which ultimately end up accumulating in urban harbors, where they can act as contaminants alone or as part of a mixture. In attempt to grasp a more complete picture of anthropogenic chemicals in an urban harbor, we analyzed 940 organic chemicals in sediments in Tokyo Bay, one of the most densely populated and modernized areas in the world. For the chemical analysis, we used targeted analytical methods using a GC-MS-MS and a GC-MS-SIM, and a screening analysis using an automated identification and quantification system with a GC-MS database. We detected 195 organic chemicals in the sediments; the sum of concentrations of compounds detected varied from 6095 to 39140μgkg(-1)dry wt. Since their concentrations increased with proximity to the innermost part of the bay, their sources seem to be mainly sewage treatment plants (STPs) and rivers flowing to this area. Additional confirmation comes from the nature of the identified pollutants, which are characteristic of chemicals used in households as well as fecal matter, business activities and urban run-off. From these results, it was confirmed that sediments in Tokyo Bay are still polluted with a wide range of chemicals, particularly domestic chemicals, despite nearly 100% of wastewater from household and business activities being treated by STPs.
城市社会正在使用越来越多样化的化学物质，其中许多最终会积累在城市港口，在那里它们可以单独作为污染物，也可以作为混合物的一部分。为了更全面地了解城市港口中的人为化学物质，我们分析了东京湾沉积物中的 940 种有机化学品，东京湾是世界上人口最密集、现代化程度最高的地区之一。在化学分析中，我们使用了 GC-MS-MS 和 GC-MS-SIM 的靶向分析方法，以及使用具有 GC-MS 数据库的自动化识别和定量系统进行的筛选分析。我们在沉积物中检测到 195 种有机化学品；检测到的化合物浓度总和从 6095 到 39140μgkg(-1)干重不等。由于它们的浓度随著靠近海湾的最内部而增加，因此它们的来源似乎主要是污水处理厂 (STP) 和流入该地区的河流。更多的确认来自于已识别污染物的性质，这些污染物是家庭以及粪便、商业活动和城市径流中使用的化学物质的特征。从这些结果可以证实，尽管家庭和商业活动的废水几乎 100%都经过 STP 处理，但东京湾的沉积物仍受到广泛的化学物质污染，特别是家用化学品的污染。
