Tributyltin (TBT) and triphenyltin (TPT) concentrations in water samples from Tanabe Bay were found to range from 4–28 ng l−1 and 3–7 ng l−1, respectively. In fishing ports, the concentrations of TBT in surface water were similar to those in bottom water. However, in aquafarming areas with poor flushing, the concentrations of TBT in bottom water were higher than those in surface water. This suggested that the TBT in water samples is re-eluted from sediment. No difference in the concentration of TPT was observed between the surface and bottom waters. The concentrations of TBT and TPT in sediment samples ranged from 3–23 μg kg−1 dry weight and 2–37 μg kg−1 dry weight. TBT and TPT concentrations ranged from 3.1–100 μg kg−1 and 3.1–7.2 μg kg−1 in oysters and gastropods, and from 1.1–4.9 μg kg−1 and ＜0.2–3.9 μg kg−1 in fish, respectively. Organotin concentrations in biota were lower than the tolerable average residue levels (TARLs). Alternative biocides – i.e. diuron, chlorothalonil, dichlofluanid, irgarol 1051 and Sea-Nine 211 – were also detected in surface water, and chlorothalonil and irgarol 1051 were detected in sediment. The concentrations of these compounds in surface water and sediment were lower than those reported previously. Dichlofluanid, chlorotharonil and irgarol 1051 were also found at low levels in oysters and gastropods, and at ranges of 325–339 μg kg−1, 268–291 μg kg−1 and 43–49 μg kg−1, respectively, in fish; the concentrations in fish were close to the TARL levels.

中文翻译：

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日本田边湾沿海地区防污杀菌剂分布情况

田边湾水样中的三丁基锡 (TBT) 和三苯基锡 (TPT) 浓度范围为 4-28 ng l-1和 3–7 ng l-1， 分别。在渔港，地表水中的 TBT 浓度与底水中的浓度相似。然而，在冲刷较差的水产养殖区，底水中的 TBT 浓度高于地表水中的浓度。这表明水样中的 TBT 从沉积物中重新洗脱。在地表水和底层水之间没有观察到 TPT 浓度的差异。沉积物样品中 TBT 和 TPT 的浓度范围为 3-23 μg/kg-1干重和 2–37 μg kg-1净重。TBT 和 TPT 浓度范围为 3.1–100 μg kg-1和 3.1–7.2 μg kg-1在牡蛎和腹足动物中，从 1.1–4.9 μg kg-1和＜0.2–3.9 μg·kg-1分别在鱼中。生物群中的有机锡浓度低于可耐受的平均残留水平 (TARL)。在地表水中也检测到了替代杀生物剂——即敌草隆、百菌清、敌百灵、irgarol 1051 和Sea-Nine 211，并且在沉积物中检测到了百菌清和 irgarol 1051。这些化合物在地表水和沉积物中的浓度低于先前报道的浓度。在牡蛎和腹足类动物中也发现双氯氟虫胺、百菌清和 irgarol 1051 含量较低，范围为 325-339 μg/kg-1, 268–291 微克/千克-1和 43–49 μg/kg-1，分别在鱼中；鱼中的浓度接近 TARL 水平。