Sorption and transport of aluminum dialkyl phosphinate flame retardants and their hydrolysates in soils
文献类型：期刊论文
| 作者 | Shi, Fengqiong; Hao, Zhineng ; Liang, Yong; Liu, Jiyan; Liu, Jingfu
|
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2019-03 |
| 卷号 | 246页码:1-10 |
| 关键词 | Soil sorption Soil transport Aluminum dialkyl phosphinates (ADPs) Dialkyl phosphinic acids (DPAs) CXTFIT |
| ISSN号 | 0269-7491 |
| 英文摘要 | Aluminum dialkyl phosphinates (ADPs) are a class of promising phosphorus-containing flame retardants, but their environmental fate is not well understood. Sorption and transport behaviors of ADPs, and their hydrolysates dialkyl phosphinic acids (DPAs) were studied by batch and column experiments. ADP5 are less mobile in soil columns with more than half (>52.6%) of ADPs retained in the soil and residues in the topmost 2-cm layer account for more than 57% of total residues. Dissolution and dispersion of fine grain ADPs were responsible for the transport of ADPs. Sorption DPAs (logK(oc)) was significantly related to the lipophilicity of DPAs (logD) (p < 0.05). Soil pH and clay content were the dominant factors governing the sorption and transport of DPAs in soils, indicating the importance of electrostatic interactions. The retardation factors (R) of DPAs derived from leaching experiments were pH-dependent with larger R values in the acidic soil (pH = 4.0) where anionic and neutral species of DPAs coexisted. Both physical and chemical non-equilibrium convection-dispersion equations (CDE) yield appropriate modeling for DPAs transport. In most cases, R values estimated from column tests differed from those derived from the batch experiments, which might be attributed to non-equilibrium sorption processes in dynamic conditions. (C) 2018 Published by Elsevier Ltd. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/43016]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm & Ecotoxicol, Beijing 100085, Peoples R China 3.Jianghan Univ, Inst Environm & Hlth, Wuhan 430056, Hubei, Peoples R China 4.Jianghan Univ, Minist Educ, Key Lab Optoelect Chem Mat & Devices, Wuhan 430056, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Fengqiong,Hao, Zhineng,Liang, Yong,et al. Sorption and transport of aluminum dialkyl phosphinate flame retardants and their hydrolysates in soils[J]. ENVIRONMENTAL POLLUTION,2019,246:1-10. |
| APA | Shi, Fengqiong,Hao, Zhineng,Liang, Yong,Liu, Jiyan,&Liu, Jingfu.(2019).Sorption and transport of aluminum dialkyl phosphinate flame retardants and their hydrolysates in soils.ENVIRONMENTAL POLLUTION,246,1-10. |
| MLA | Shi, Fengqiong,et al."Sorption and transport of aluminum dialkyl phosphinate flame retardants and their hydrolysates in soils".ENVIRONMENTAL POLLUTION 246(2019):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
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