DOI: 10.1016/j.watres.2018.07.064
Scopus记录号: 2-s2.0-85053040979
论文题名: Sorption of organic compounds to two diesel soot black carbons in water evaluated by liquid chromatography and polyparameter linear solvation energy relationship
作者: Su P.-H. ; Kuo D.T.F. ; Shih Y.-H. ; Chen C.-Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 709
结束页码: 718
语种: 英语
英文关键词: Black carbon
; Linear solvation energy relationship
; Organic contaminants
; Reversed-phase liquid chromatography
; Sorption coefficient
; Surface area
Scopus关键词: Activated carbon
; Charcoal
; Chemical bonds
; Dust
; Liquid chromatography
; Organic pollutants
; Risk assessment
; Sediments
; Solvation
; Soot
; Sorption
; Van der Waals forces
; Black carbon
; Linear solvation energy relationships
; Organic contaminant
; Reversed phase liquid-chromatography
; Sorption coefficients
; Surface area
; Soil pollution
; benzene
; black carbon
; chemical analysis
; liquid chromatography
; organic compound
; organic pollutant
; risk assessment
; soot
; sorption
; toluene
英文摘要: Substantial variability in sorption capacity of black carbon (BC) has been a major challenge for accurate fate and risk assessment of organic pollutants in soils and sediments. 16 model organic sorbates (logKOW = 0.38–4.21) encompassing diverse chemical functionalities were used to probe the sorption capacity of two diesel soot samples representative of graphitic BC (BC1, specific surface area (SSA) = 87 m2/g) and amorphous, oxygenated BC (BC2; SSA = 3.6 m2/g). The BC-water sorption coefficients (logKBC) of the model sorbates were determined using reversed-phase liquid chromatography (RP-LC) on soot-filled columns. It was found that mass-based logKBC's of BC1 (1.64–3.66 L/kgBC) exceeded those of BC2 (0.68–3.48 L/kgBC) consistently for all model sorbates. However, area-normalized logKBC's of BC2 were larger than those of BC1, suggesting that the overall sorption was more favored on the oxygenated sorbent per area basis. Linear solvation energy relationships (LSERs) for sorption onto BC1 and BC2 were found to be logKBC = (2.49 ± 0.65)E + (−2.71 ± 0.88)S + (1.17 ± 0.46)A + (2.52 ± 0.34)V and logKBC = (1.12 ± 0.39)E + (−1.68 ± 0.32)S + (−3.70 ± 0.57)B + (4.37 ± 0.38)V + (−1.51 ± 0.22), respectively. The LSERs indicated that sorption onto soot was generally enhanced with increasing non-specific van der Waals and decreasing cavitation cost (i.e., eE, sS, and vV terms). The logKBC difference between BC1 and BC2, ΔlogKBC, appeared to be correlated with the H-bonding capacity of the sorbates but not logKOW. Analysis of literature and experimental logKBC's revealed that logKBC and logSSA across different types of BC (i.e., soot, char, charcoal, activated carbon) were linearly correlated for benzene and toluene (r2 = 0.88–0.91). This work illustrates the utility of RP-LC in determining the sorption coefficients of high-capacity sorbents and suggests the possibility of a unified sorption model for the continuum of black carbon. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112532
Appears in Collections: 气候减缓与适应
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作者单位: Kaohsiung District Agricultural Research and Extension Station, Council of Agriculture, Executive Yuan, Taiwan; Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon City, Hong Kong; City University of Hong Kong Shenzhen Research Institute, Shenzhen, Hong Kong; Department of Agricultural Chemistry, National Taiwan University, Taipei, Taiwan; Department of Environmental Engineering & Science, Fooyin University, Kaohsiung, Taiwan
Recommended Citation:
Su P.-H.,Kuo D.T.F.,Shih Y.-H.,et al. Sorption of organic compounds to two diesel soot black carbons in water evaluated by liquid chromatography and polyparameter linear solvation energy relationship[J]. Water Research,2018-01-01,144