Organophosphate Ester Flame Retardants and Plasticizers in Ocean Sediments from the North Pacific to the Arctic Ocean
Organophosphate Ester Flame Retardants and Plasticizers in Ocean Sediments from the North Pacific to the Arctic Ocean
复制标题
北太平洋至北冰洋海洋沉积物中的有机磷酸酯阻燃剂和增塑剂
DOI：
10.1021/acs.est.7b00755
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发表时间：
2017-04-04
影响因子：
11.4
通讯作者：
Gao, Guoping
中科院分区：
文献类型：
--
作者：
Ma, Yuxin;Xie, Zhiyong;Gao, Guoping
2010年夏季，在中国第四次北极科学考察期间，首次在北太平洋至北冰洋表层沉积物中发现了有机磷酸酯类阻燃剂和增塑剂。分析样品中的三种卤代OPEs [磷酸三（2-氯乙基）酯（TCEP）、磷酸三（1-氯-2-丙基）酯（TCPP）和磷酸三（二氯异丙基）酯]、三种烷基化OPEs [磷酸三异丁酯（TiBP）、磷酸三正丁酯和磷酸三戊酯]和磷酸三苯酯。Sigma 7OPEs。（观察到的OPEs的总浓度）在159-4658 pg/g干重的范围内。卤代OPEs通常比非卤代OPEs更丰富; TCEP和TiBP占主导地位的总体浓度。除白令海外，从白令海峡到北冰洋中部，Sigma 7 OPEs值随纬度的增加而增加，卤代OPEs（典型的TCEP和TCPP）对总OPE剖面的贡献也从白令海峡到北冰洋中部逐渐增加，表明卤代OPEs更有可能被输送到遥远的北极。北冰洋中部沉积物中西格玛7型有机污染物的平均含量为52吨（范围为17-292吨），仅占其总产量的很小一部分，但北冰洋沉积物中有机污染物的数量明显大于沉积物中多溴二苯醚的总量，这表明它们同样容易远距离迁移到远离来源地区的地方。鉴于作为多溴二苯醚替代品的臭氧消耗物质的生产和使用水平不断提高，臭氧消耗物质将继续在偏远的北极地区积累。
The presence of organophosphate ester (OPE) flame retardants and plasticizers in surface sediment from the North Pacific to Arctic Ocean was observed for the first time during the fourth National Arctic Research Expedition of China in the summer of 2010. The samples were analyzed for three halogenated OPEs [tris(2-chloroethyl) phosphate (TCEP), tris(1-chloro-2-propyl) phosphate (TCPP), and tris(dichloroisopropyl) phosphate], three alkylated OPEs [triisobutyl phosphate (TiBP), tri-n-butyl phosphate, and tripentyl phosphate], and triphenyl phosphate. Sigma 7OPEs.(total concentration of the observed OPEs) was in the range of 159-4658 pg/g of dry weight. Halogenated OPEs were generally more abundant than the nonhalogenated OPEs;, TCEP and TiBP dominated the overall concentrations. Except for that of the Bering Sea, Sigma 7OPEs values increased with increasing latitudes from Bering Strait to the Central Arctic Ocean, while the contributions of halogenated OPEs (typically TCEP and TCPP) to the total OPE profile also increased from the Bering Strait to the Central Arctic Ocean, indicating they are more likely to be transported to the remote Arctic. The median budget of 52 (range of 17-292) tons for Sigma 7OPEs in sediment from the Central Arctic Ocean represents only a very small amount of their total production volume, yet the amount of OPEs in Arctic Ocean sediment was significantly larger than the sum of polybrominated diphenyl ethers (PBDEs) in the sediment, indicating they are equally prone to long-range transport away from source regions. Given the increasing level of production and usage of OPEs as substitutes of PBDEs, OPEs will continue to accumulate in the remote Arctic.