| DOI: | 10.1016/j.watres.2018.12.039
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| Scopus记录号: | 2-s2.0-85060014611
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| 论文题名: | Insight into the distribution of pharmaceuticals in soil-water-plant systems |
| 作者: | Li Y.; Sallach J.B.; Zhang W.; Boyd S.A.; Li H.
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| 刊名: | Water Research
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| ISSN: | 431354
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| 出版年: | 2019
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| 起始页码: | 38
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| 结束页码: | 46
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| 语种: | 英语
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| 英文关键词: | Bioaccumulation
; Bioavailability
; Plant uptake
; Soil pore water
; Translocation
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| Scopus关键词: | Bioaccumulation
; Biochemistry
; Biodegradation
; Crops
; Cytology
; Soil moisture
; Wastewater treatment
; Bio-concentration factors
; Bioavailability
; Bioavailable fraction
; Physicochemical process
; Plant uptake
; Soil pore waters
; Soil-water-plant system
; Translocation
; Soil pollution
; water
; bioaccumulation
; bioavailability
; biological uptake
; biosolid
; drug
; environmental fate
; physicochemical property
; porewater
; soil-vegetation interaction
; spatial distribution
; translocation
; wastewater
; Article
; bioaccumulation
; bioavailability
; biodegradation
; concentration (parameter)
; controlled study
; hydrophobicity
; physical chemistry
; plant tissue
; priority journal
; radish
; soil
; volume
; Raphanus sativus
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| 英文摘要: | Pharmaceuticals in agricultural soils originating from irrigation with treated wastewater and land-applied biosolids can enter field crops. However, little is known about the role of pore water in plant uptake of pharmaceuticals from soils. In this study, the fate, uptake and distribution of fifteen commonly used pharmaceuticals in soil-water-radish systems were investigated to examine the relationship between the accumulation and their physicochemical processes in soils. The results indicate that the distribution of pharmaceuticals between soil and pore water, as well as their biodegradation, combined to govern the bioavailability of pharmaceuticals to plant uptake. Fourteen out of 15 pharmaceuticals could enter radish tissues in which the accumulation ranged from 2.1 to 14080 ng/g. Comparison of bioconcentration factors (BCFs) on the basis of pharmaceutical concentration in bulk soil vs. in pore water implies that pharmaceuticals present in soil pore water are the major bioavailable fractions to plant uptake. The pore water-based BCFs exhibited a positive linear relationship with log D ow for the pharmaceuticals with >90% as neutral species in soil pore water, while such relationship was not observed between bulk soil-based BCFs and log D ow mainly due to sorption by soil. Other than hydrophobicity, the dissociation of ionizable pharmaceuticals in the soil pore water and (or) root cells may lead to the “ion-trap” effects and thus influence the uptake and translocation process. The large molecular-size pharmaceuticals (e.g., tylosin) manifested a minimum uptake due plausibly to the limited permeability of cell membranes. © 2019 Elsevier Ltd |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/122022
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Department of Plant, Soil and Microbial Sciences, Michigan State University, East LansingMI 48824, United States
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| Recommended Citation: | |
Li Y.,Sallach J.B.,Zhang W.,et al. Insight into the distribution of pharmaceuticals in soil-water-plant systems[J]. Water Research,2019-01-01
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