神奈川県内の河川底質におけるアルキルフェノール及びビスフェノールA の分配性と底生生物のリスク評価

• 三島 聡子

  神奈川県環境科学センター

書誌事項

タイトル別名

• <b>Partitioning of Alkylphenol and BPA between River Sediment and Water to Estimate their Risks on Benthic Organisms in Kanagawa Prefecture </b>
• カナガワ ケンナイ ノ カセンテイシツ ニ オケル アルキルフェノール オヨビ ビスフェノール A ノ ブンパイセイ ト テイセイ セイブツ ノ リスク ヒョウカ

抄録

Ecological risk of alkylphenol and bisphenol A (BPA) has recently been considered to be an emerging concern, especially for benthic organisms due to their relatively high hydrophobicity. The purpose of this study was to clarify their partitioning behavior and estimate their risks to benthic organisms in Kanagawa prefecture. <br>The obtained volume fraction solids in sediment (Fsolid_sed) ranged from 0.43 m³/m³ to 0.54 m³/m³. The density of solid phase (RHOsolid) ranged from 1,900 kg/m³ to 3,300 kg/m³. The sediment in the upstream of the river had particles with size bigger than the downstream. The pH of water solution obtained by desorption test ranged from 6.6 to 7.5. There was no significant correlation between their physical-chemical properties and sorption behavior. <br>The measured solid-water partitioning coefficient of the sediments (Kp_(exam)) increased with increasing the amount of ignition loss in sediment solids and a significant correlation was found between them. <br>The predicted no effect concentration in sediment (PNECsed) of 4tOP, 280 μg/kg-dry was derived from the no observed effect concentration (NOEC) for Chironomus yoshimatsui and the product of uncertainty factors (UFs). PNECsed of 4NP, 210 μg/kg-dry was derived from NOEC for C. yoshimatsui and UFs. PNECsed of BPA, 440 μg/kg-dry was derived from NOEC for Lumbriculus variegatus and UFs. <br>NOEC of 4tBP to benthic organisms was not obtained. PNECsed_(exam) of 4tBP was calculated from Kp_(exam), the density of solid phase (RHOsolid), Fsolid_sed and PNECwater. PNECsed_(exam) of 4tBP ranged from 33 μg/kg-dry to 810 μg/kgdry. <br>The results of screening level ecological risk assessment using PNECsed and measured environmental concentration suggest no significant concern of the selected alkylphenols and BPA for benthic organisms in the river sediments of Kanagawa Prefecture.

収録刊行物

• 環境化学

  環境化学 27 (3), 39-53, 2017

  一般社団法人 日本環境化学会

キーワード

• Alkylphenol
• BPA
• Partition coefficient solid-water in sediment
• Ignition loss
• PNECsed

詳細情報

• CRID: 1390282679345850240
• NII論文ID: 130006517063
• NII論文ID: 40021330255
• NII書誌ID: AN10547099
• DOI: 10.5985/jec.27.39
• ISSN: 18825818
• ISSN: 09172408
• NDL書誌ID: 028545421
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028545421
• Web Site: https://www.jstage.jst.go.jp/article/jec/27/3/27_39/_pdf
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可