Analysis of biomagnification profiles of environmental chemicals in the shallow water ecosystems based on the nitrogen stable isotope ratio

基于氮稳定同位素比的浅水生态系统环境化学物质生物放大谱分析

• 批准号: 16310042
• 负责人: TAKEUCHI Ichiro
• 金额: $ 7.74万
• 依托单位: Ehime University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16310042/
• 关键词: Environmental chemicals; Biomagnification profile; Shallow water ecosystem; Organotins; Organochlorines; Alkylphenols; Polycyclic aromatic hydrocarbons; 窒素安定同位体; 炭素安定同位体; 沿岸域生態系; PCB; DDT; トリブチルスズ; トリフェニルスズ

The present study elucidated the biomagnification profiles of oroganotins, organochrolines, polycyclic aromatic hydrocarbons (PAHs), and alchylphenols through coastal food web based on trophic characterization using stable nitrogen ratio analysis (δ^<15>N). While tributyltin (TBT), one of the representative organotins, showed no significant biomagnification through the coastal food web (expressed by δ^<15>N), significant biomagnification of triphenyltin (TPT) was found. Most of organochlorines, i.e., dichlorodiphenyltrichloroethane and its metabolites (DDTs), polychlorinated biphenyls (PCBs), chlordane compounds (CHLs) and tris-4-chlorophenyl methane (TCPMe) showed the significant positive increases with increases of δ^<15>N. However, unlike these organochlorines, most of isomers of PAHs and nonylphenols and octylphenol, both which are alkylphenols, showed the significant decrease with increases of δ^<15>N. The present study shows that, unlike organochlorines, organotins except for TPT, PAHs and alkylphenols showed no significant biomagnification through the coastal food web. A comparison of our results with previous data on the log transformed octanol-water partition coefficient (log Kow) indicates that a value of 5.5 (log Kow) represents a threshhold coefficient for biomagnification or not through the coastal food web. This means that organisms situated at lower trophic levels of the food web accumulate more of these anthropogenic chemicals than organisms situated at the higher trophic level.

本研究阐明了Ooganotins，Oroganotins，Organoclolines，多环状芳香族烃（PAHS）和烷基苯酚通过沿海食品网通过稳定的氮比分析（δ^^<15> n），通过沿海食物网络通过沿海食物网进行。虽然代表性有机素之一Tributyltin（TBT）通过沿海食品网未显示出显着的生物磁化（由δ^<15> N表示），但发现Triphenyltin（TPT）的显着生物磁化。大多数有机氯，即二氯二苯基三氯乙烷及其代谢产物（DDTS），多氯化双苯基（PCB），氯达烷化合物（CHLS）和TRIS-4-氯苯基甲烷（TCPME），随着Δ^^nΔ^^nΔ^^nΔ^^n的增加而显示出显着的阳性增加。然而，与这些有机氯不同的是，PAHS和北苯酚和辛基酚的大多数异构体（均为烷基苯酚）都显示出显着降低，随着δ^<15> n的增加的增加。本研究表明，与有机氯不同的是，除TPT外，PAHS和烷基苯酚除外，通过沿海食品网没有显示出明显的生物磁化。我们的结果与对数转换的辛醇 - 水分区临界（原木库）的先前数据进行了比较，表明5.5（log Kow）的值代表生物磁化的阈值系数，或者不是通过沿海食品网。这意味着，位于较低营养水平的食物网络中的生物比位于较高营养水平的生物会积累更多的人为化学物质。

项目成果

微量人工化学物質の生物モニタリング

微量人工化学品的生物监测

• 发表时间: 2004
• 作者: Tomoyuki Kosaka;TakuUchiyama;Shun-ichi Ishii;Miho Enoki;Hiroyuki Imachi;Akiyoshi Ohashi;Hideki Harada;Hiroshi Ikenaga;Kazuya Watanabe;田辺信介
• 通讯作者: 田辺信介