Phytotoxicity of PFOS and PFOA to Brassica chinensis in different Chinese soils.
Phytotoxicity of PFOS and PFOA to Brassica chinensis in different Chinese soils.
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DOI：
10.1016/j.ecoenv.2011.03.007
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发表时间：
2011-07
影响因子：
6.8
通讯作者：
Hongxia Zhao;Chuanbin Chen;Xin Zhang;Jingwen Chen;X. Quan
中科院分区：
文献类型：
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作者：
Hongxia Zhao;Chuanbin Chen;Xin Zhang;Jingwen Chen;X. Quan
全氟辛烷磺酸和全氟辛酸是潜在的持久性有机污染物，近年来引起了许多关注。重点研究 PFOS 和 PFOA 对高等植物的植物毒性对于其风险评估是必要的。然而，全氟辛烷磺酸或全氟辛酸及高等植物的毒性数据很少。在这里，我们使用标准化根长测定法研究了 PFOS 和 PFOA 对中国六种土壤性质差异很大的不同土壤中甘蓝根生长的植物毒性。添加引起 50% 抑制 (EC50) 的 PFOS 和 PFOA 的有效浓度分别为 PFOS 95 至 >200 mg kg−1 和 PFOA 107 至 246 mg kg−1，代表测试土壤之间的差异超过 2.1 倍和 2.3 倍。土壤 PFOS 和 PFOA 毒性阈值（ECx 和 NOEC）与不同土壤性质的回归表明，有机质含量是影响其对 B 的毒性的最显着因素。中华。
PFOS and PFOA are potential persistent organic pollutants that have raised many concerns in recent years. Research focusing on phytotoxicity of PFOS and PFOA to higher plants is necessary for their risk assessments. However, few toxicity data exist for PFOS or PFOA and higher plants. Here we investigated phytotoxicity of PFOS and PFOA toBrassicachinensisroot growth in six different Chinese soils varying widely in soil properties using a standardized root length assay. The effective concentrations of added PFOS and PFOA causing 50% inhibition (EC50) ranged from 95 to >200 mg kg−1for PFOS and from 107 to 246 mg kg−1for PFOA, respectively, representing more than 2.1- and 2.3-fold variation among the tested soils. Regressions of soil PFOS and PFOA toxicity threshold values (ECxand NOECs) with various soil properties showed that the amount of organic matter was the most significant factor affecting their toxicity toB. chinensis.