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Measurement of partition coefficients for selected polycyclic aromatic hydrocarbons between isolated plant cuticles and water.
Sci Total Environ 2014; 494-495:113-8ST

Abstract

Partition coefficients between plant cuticles and water (Kcutw) were measured for 10 selected polycyclic aromatic hydrocarbons (PAHs) to evaluate the sorption capacity of plant cuticular layers for hydrophobic organic chemicals. The partitioning properties of PAHs between cuticles and water were evaluated by using (1) isolated cuticular layers and (2) leaf homogenate. The abaxial and adaxial cuticular layers of Euonymus japonicus were isolated by enzymatic digestion. A third-phase partitioning method using poly(dimethylsiloxane) (PDMS) was used to obtain Kcutw. The Kcutw values for the selected PAHs showed no significant differences between the abaxial and adaxial cuticular layers and ranged between 10(4.1) and 10(7.6). These values are close to or slightly higher than their 1-octanol/water partition coefficient (log Kow), indicating high sorption capacity of plant cuticles. On the contrary, partition coefficients between the lipid tissues of homogenized leaves and water were lower than those obtained using isolated cuticular layers by factors of 3.7-190, which is likely due to the breakdown of lipid layers. This indicates that the sorption of hydrophobic organic chemicals by plant leaves is better evaluated using isolated cuticles and that the sorption potential of plant leaves may be underestimated when leaf homogenates are used.

Authors+Show Affiliations

Environmental Research Institute, Ajou University, 206 Worldcup-ro, Yeongtong-gu, Suwon 443-749, Republic of Korea.Division of Environmental Science and Ecological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea.Division of Environmental Science and Ecological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 136-713, Republic of Korea. Electronic address: junghwankwon@korea.ac.kr.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25038429

Citation

Kim, Su-Jin, et al. "Measurement of Partition Coefficients for Selected Polycyclic Aromatic Hydrocarbons Between Isolated Plant Cuticles and Water." The Science of the Total Environment, vol. 494-495, 2014, pp. 113-8.
Kim SJ, Lee H, Kwon JH. Measurement of partition coefficients for selected polycyclic aromatic hydrocarbons between isolated plant cuticles and water. Sci Total Environ. 2014;494-495:113-8.
Kim, S. J., Lee, H., & Kwon, J. H. (2014). Measurement of partition coefficients for selected polycyclic aromatic hydrocarbons between isolated plant cuticles and water. The Science of the Total Environment, 494-495, pp. 113-8. doi:10.1016/j.scitotenv.2014.06.119.
Kim SJ, Lee H, Kwon JH. Measurement of Partition Coefficients for Selected Polycyclic Aromatic Hydrocarbons Between Isolated Plant Cuticles and Water. Sci Total Environ. 2014 Oct 1;494-495:113-8. PubMed PMID: 25038429.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Measurement of partition coefficients for selected polycyclic aromatic hydrocarbons between isolated plant cuticles and water. AU - Kim,Su-Jin, AU - Lee,Hwang, AU - Kwon,Jung-Hwan, Y1 - 2014/07/16/ PY - 2014/04/04/received PY - 2014/06/24/revised PY - 2014/06/27/accepted PY - 2014/7/20/entrez PY - 2014/7/20/pubmed PY - 2015/5/13/medline KW - Environmental fate KW - Hydrophobic organic chemicals KW - Partition coefficient KW - Plant KW - Polycyclic aromatic hydrocarbons (PAHs) KW - Quantitative structure–activity relationship (QSAR) SP - 113 EP - 8 JF - The Science of the total environment JO - Sci. Total Environ. VL - 494-495 N2 - Partition coefficients between plant cuticles and water (Kcutw) were measured for 10 selected polycyclic aromatic hydrocarbons (PAHs) to evaluate the sorption capacity of plant cuticular layers for hydrophobic organic chemicals. The partitioning properties of PAHs between cuticles and water were evaluated by using (1) isolated cuticular layers and (2) leaf homogenate. The abaxial and adaxial cuticular layers of Euonymus japonicus were isolated by enzymatic digestion. A third-phase partitioning method using poly(dimethylsiloxane) (PDMS) was used to obtain Kcutw. The Kcutw values for the selected PAHs showed no significant differences between the abaxial and adaxial cuticular layers and ranged between 10(4.1) and 10(7.6). These values are close to or slightly higher than their 1-octanol/water partition coefficient (log Kow), indicating high sorption capacity of plant cuticles. On the contrary, partition coefficients between the lipid tissues of homogenized leaves and water were lower than those obtained using isolated cuticular layers by factors of 3.7-190, which is likely due to the breakdown of lipid layers. This indicates that the sorption of hydrophobic organic chemicals by plant leaves is better evaluated using isolated cuticles and that the sorption potential of plant leaves may be underestimated when leaf homogenates are used. SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/25038429/Measurement_of_partition_coefficients_for_selected_polycyclic_aromatic_hydrocarbons_between_isolated_plant_cuticles_and_water_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(14)00992-9 DB - PRIME DP - Unbound Medicine ER -