Toxicity of Perfluorooctane Sulfonate and Perfluorooctanoic Acid to Plants and Aquatic Invertebrates
Toxicity of Perfluorooctane Sulfonate and Perfluorooctanoic Acid to Plants and Aquatic Invertebrates
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DOI：
10.1002/tox.20396
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发表时间：
2009-02-01
影响因子：
4.5
通讯作者：
Li, Mei-Hui
中科院分区：
文献类型：
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作者：
Li, Mei-Hui
对四种淡水物种和三种植物物种测试了全氟辛烷磺酸 (PFOS) 和全氟辛酸 (PFOA) 的急性毒性。对于本研究中测试的所有物种，全氟辛烷磺酸 (PFOS) 的毒性比全氟辛酸 (PFOA) 更高。每个测试物种都观察到 PFOS 和 PFOA 毒性的相似时间响应模式。所有测试物种的 PFOS 48 小时 LC(50) 值范围为 27 至 233 mg/L，其中三个物种的 96 小时 LC(50) 值范围为 10 至 178 mg/L。所有测试物种的 PFOA 48 小时 LC50 值范围为 181 至 732 mg/L，其中三个物种的 96 小时 LC(50) 值范围为 337 至 672 mg/L。对 PFOS 最敏感的淡水物种是绿氖虾（Neocaridina denticulate），其 96 小时 LC(50) 为 10 mg/L。在测试的水生生物中，水生蜗牛 (Physa acuta) 在每个暴露期间始终对 PFOS 或 PFOA 毒性具有最高的抵抗力。全氟辛烷磺酸和全氟辛酸对所有三种植物的种子萌发均没有明显的不利影响。本研究中根伸长的五天 EC(50) 对种子萌发的 LC(50) 更敏感。根据 EC(10)、EC(50) 和 NOEC，试验植物对 PFOS 和 PFOA 的 5 d 根系伸长敏感性顺序为生菜 (Lactuca sativa) > 小白菜 (Brassica rapa chinensis) > 黄瓜 (Cucumis sativus)。根据本研究的结果和其他已发表的文献，表明目前淡水中的 PFOS 和 PFOA 水平可能不会对水生环境产生严重的有害生态影响。然而，需要对 PFOS 和 PFOA 对水生动物的长期生态影响进行更多研究，为充分评估 PFOS 和 PFOA 的生态风险提供重要信息。 (C) 2008 Wiley periodicals, Inc. Environ Toxicol 24:95 101, 2009。
Acute toxicities of perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) were tested on four freshwater species and three plant species. PFOS was more toxic than PFOA for all species tested in this study. Similar time-response patterns of PFOS and PFOA toxicity were observed for each tested species. Values of the 48-h LC(50) of PFOS for all test species ranged from 27 to 233 mg/L and values of the 96-h LC(50) for three of the species ranged from 10 to 178 mg/L. Values of the 48-h LC50 Of PFOA for all test species ranged from 181 to 732 mg/L and values of the 96-h LC(50) for three of the species ranged from 337 to 672 mg/L. The most sensitive freshwater species to PFOS was green neon shrimp (Neocaridina denticulate) with a 96-h LC(50) of 10 mg/L. Of the aquatic organisms tested, the aquatic snail (Physa acuta) always has the highest resistance to PFOS or PFOA toxicity over each exposure period. Both PFOS and PFOA had no obvious adverse effect on seed germination for all three plant species. Five-day EC(50) of root elongation was more sensitive to LC(50) of seed germination in this study. Based on EC(10), EC(50), and NOECs, the 5-day root elongation sensitivity of test plants to both PFOS and PFOA was in the order of lettuce (Lactuca sativa) > pakchoi (Brassica rapa chinensis) > cucumber (Cucumis sativus). Based on the results of this study and other published literature, it is suggested that current PFOS and PFOA levels in freshwater may have no acute harmful ecological impact on the aquatic environment. However, more research on the long-term ecological effects of PFOS and PFOA on aquatic fauna are needed to provide important information to adequately assess ecological risk of PFOS and PFOA. (C) 2008 Wiley Periodicals, Inc. Environ Toxicol 24:95 101, 2009.