Identification and Evaluation of a Novel Heterocyclic Brominated Flame Retardant Tris(2,3-dibromopropyl) Isocyanurate in Environmental Matrices near a Manufacturing Plant in Southern China
Identification and Evaluation of a Novel Heterocyclic Brominated Flame Retardant Tris(2,3-dibromopropyl) Isocyanurate in Environmental Matrices near a Manufacturing Plant in Southern China
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华南某制造厂附近环境基质中新型杂环溴化阻燃剂三(2,3-二溴丙基)异氰脲酸酯的鉴定和评价
DOI：
10.1021/es803397x
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发表时间：
2009-05-01
影响因子：
11.4
通讯作者：
Jiang, Guibin
中科院分区：
文献类型：
--
作者：
Ruan, Ting;Wang, Yawei;Jiang, Guibin
首次在自然环境中发现了溴化阻燃剂六溴杂环三（2，3-二溴丙基）异氰脲酸酯（TBC）。在中国南方一个工厂污染区的河水（2.33-163纳克/升）、表层沉积物（85.0纳克/克-6.03微克/克干重）、土壤（19.6-672纳克/克干重）、底泥（9.76-78.8纳克/克干重）和鲤鱼样本（12.0-646纳克/克干重）中发现了该化学品。结果表明，TBC对沉积物中的有机物有较强的吸附作用，土壤和底泥中TBC的浓度随距离的增加而降低，结合计算的辛醇-水分配系数（K-ow）和辛醇-空气分配系数（K-oa）表明TBC具有通过降尘进行区域迁移的潜在能力。计算结果表明，该BFR具有较高的Kow（log Kow = 7.37）和生物累积因子（log BAF = 4.30），表明TBC具有半挥发性和在某些生物物种中的生物累积特性。定量结构-性质关系（QSPR）模拟结果表明，TBC的K-oa（log K-oa = 23.68）和K-aw（空气-水分配系数）（log K-aw = -16.31）值比其他BFR高几个数量级。该化学添加剂的鉴定进一步提醒我们，杂环溴化阻燃剂的生产和使用可能对周围环境造成潜在污染。
A brominated flame retardant (BFR), hexabrominated heterocyclic tris-(2,3-dibromopropyl) isocyanurate (TBC), was identified, for the first time, in the natural environment. The chemical was found in river water (2.33-163 ng/L), surface sediments (85.0 ng/g-6.03 mu g/g dry weight (dw)), soils (19.6-672 ng/g dw), earthworm (9.76-78.8 ng/g dw), and carp samples (12.0-646 ng/g dw) from a factory-polluted area in southern China. It was found that TBC can strongly adsorb to organic material in sediment, and a trend of decreasing concentration with distance from the source in soil and earthworm samples, combined with calculated K-ow (octanol-water partition coefficient) and K-oa (octanol-air partition coefficient), suggests its potential ability to undergo regional transportation through dust deposition. Calculated results showed high K-ow (log K-ow = 7.37) and bioaccumulation factor (BAF) (log BAF = 4.30) of this BFR and indicate that TBC has semivolatile properties and bioaccumulation characteristic in certain biological species. Quantitative structure property relationships (QSPRs) modeling revealed that TBC has K-oa, (log K-oa = 23.68) and K-aw (air-water partition coefficient) (log K-aw = -16.31) values several orders higher than those of other BFRs. The identification of this chemical additive further reminds us that the production and usage of heterocyclic BFRs may cause potential contamination to the surrounding environment.