Institutional Repository of Key Laboratory of Marine Ecology & Environmental Sciences, CAS
| Environmental effects of modified clay flocculation on Alexandrium tamarense and paralytic shellfish poisoning toxins (PSTs) | |
Lu, Guangyuan1,2,3; Song, Xiuxian1 ; Yu, Zhiming1; Cao, Xihua1; Yuan, Yongquan1
| |
| 2015-05-01 | |
| 发表期刊 | CHEMOSPHERE
 |
| 卷号 | 127页码:188-194 |
| 文章类型 | Article |
| 摘要 | Among various mitigation strategies for harmful algal blooms (HABs), the flocculation of algal cells by using modified clay (MC) has been widely applied in the field, particularly in Japan, Korea and China. However, to examine the long-term effects and the environmental safety of this method, we investigated alterations in macronutrients and paralytic shellfish poisoning toxins (PSTs) induced by the application of MC treatment to a toxic bloom, Alexandrium tamarense. The control, algal cells grew in nature condition (Al), was compared to the only MC flocculation (A2) and the MC-sediment co-matrix systems of A. tamarense (A3). The low-dosage of 0.25 g L-1 MC could efficiently remove >90% of the A. tamarense cells within 3.5h. The mechanisms underlying the effects elicited by MC flocculation on nutrient cycling, PSTs and Chl-a degradation were also discussed. This study demonstrated that MC treatment was able to significantly remove the macronutrients (43-60% TP removal and 17-30% TN removal) and scavenge most of the PSTs from seawater, thereby speeding up the nutrient settling and the transformation and degradation of PSTs (83% decreasing in A2). Simultaneously, the study firstly demonstrated the potential detoxification of PSTs by using MC treatment, from the high toxicity of gonyautoxin 1 and 4 (GTX1 and GTX4) to the lower toxicity decarbamoyl gonyautoxins (dcGTX3) and gonyautoxin 2 (GTX2), particularly within the water-sediment environment during the two month incubation. (C) 2015 Elsevier Ltd. All rights reserved. |
| 关键词 | Modified Clay Habs Mitigation Paralytic Shellfish Poisoning Toxin (Psts) Alexandrium Tamarense Environmental Effect |
| DOI | 10.1016/j.chemosphere.2015.01.039 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000352659900025 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/25455 |
| 专题 | 海洋生态与环境科学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, IOCAS, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Lu, Guangyuan,Song, Xiuxian,Yu, Zhiming,et al. Environmental effects of modified clay flocculation on Alexandrium tamarense and paralytic shellfish poisoning toxins (PSTs)[J]. CHEMOSPHERE,2015,127:188-194. |
| APA | Lu, Guangyuan,Song, Xiuxian,Yu, Zhiming,Cao, Xihua,&Yuan, Yongquan.(2015).Environmental effects of modified clay flocculation on Alexandrium tamarense and paralytic shellfish poisoning toxins (PSTs).CHEMOSPHERE,127,188-194. |
| MLA | Lu, Guangyuan,et al."Environmental effects of modified clay flocculation on Alexandrium tamarense and paralytic shellfish poisoning toxins (PSTs)".CHEMOSPHERE 127(2015):188-194. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Environmental effect（519KB） | 期刊论文 | 出版稿 | 限制开放 | ODC PDDL | 浏览 | |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论