Hanari Nobuyasu, Horii Yuichi, Okazawa Tsuyoshi, Falandysz Jerzy, Bochentin Ilona, Orlikowska Anna, Puzyn Tomasz, Wyrzykowska Barbara, Yamashita Nobuyoshi
National Institute of Advanced Industrial Science and Technology (AIST), EMTECH, 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan.
J Environ Monit. 2004 Apr;6(4):305-12. doi: 10.1039/b311176h. Epub 2004 Feb 26.
Pine needle samples collected at ten spatially distant sites around Tokyo Bay in 1999 indicated a widespread lower troposphere pollution with ultra-trace dioxin-like compounds such as chlorodibenzo-p-dioxins (PCDDs), -furans (PCDFs), non-ortho- and mono-ortho-chlorobiphenyls (pPCBs), and -naphthalenes (PCNs). Elevated concentration of planar PCBs and the total PCNs were found at the sites which are located innermost to the Bay, suggesting the regional importance of the evaporative nature of the source of pollution by those compounds over this vast area. The concentrations and profiles for PCDDs and PCDFs remained largely uniform. An exception was the site near the town of Tateyama in the Chiba Prefecture, which is the southernmost but also relatively separate from the inner Bay. The site near Tateyama showed somehow background contamination with all compound groups and highly different profiles of PCNs. The principal component analysis (PCA) of the data matrix has revealed that around the Tokyo Bay, apart from the evaporative emission sources for PCNs and PCBs, combustion related processes also play an important role as sources of the ambient air contamination not only with PCDDs/Fs but also with chloronaphthalenes and planar chlorobiphenyls.
1999年在东京湾周围十个空间距离较远的地点采集的松树针叶样本表明，对流层下部存在广泛的污染，含有超痕量的二噁英类化合物，如氯代二苯并对二噁英（PCDDs）、氯代二苯并呋喃（PCDFs）、非邻位和单邻位氯代联苯（pPCBs）以及氯代萘（PCNs）。在最靠近海湾内部的地点发现平面多氯联苯和总多氯萘的浓度升高，这表明这些化合物污染源的蒸发性质在这一广大区域具有区域重要性。PCDDs和PCDFs的浓度及分布情况基本保持一致。千叶县馆山市附近的地点是个例外，它位于最南端，但也相对远离海湾内部。馆山市附近的地点在所有化合物组中都显示出某种程度的背景污染，并且多氯萘的分布情况差异很大。对数据矩阵进行的主成分分析（PCA）表明，在东京湾周边，除了多氯萘和多氯联苯的蒸发排放源外，与燃烧相关的过程也是周围空气污染的重要来源，不仅会导致PCDDs/Fs污染，还会造成氯代萘和平面氯代联苯污染。
