https://scholars.lib.ntu.edu.tw/handle/123456789/446309
標題: | Sorption equilibrium of emerging and traditional organic contaminants in leafy rape, Chinese mustard, lettuce and Chinese cabbage | 作者: | Yang C.-Y. Chang M.-L. Wu S.C. YANG-HSIN SHIH |
關鍵字: | Composition model; Lipid; Lipid-water partition coefficient; Octanol-water partition coefficient; Partition | 公開日期: | 2016 | 卷: | 154 | 起(迄)頁: | 552-558 | 來源出版物: | Chemosphere | 摘要: | Emerging and petroleum contaminants could transfer into food chains by plant uptake, potentially causing food security problems. To build a prediction model, the sorption equilibrium and uptake kinetics of toluene, p-xylene, naphthalene, bisphenol A, and 4-bromo-diphenyl ether in some common leafy vegetables including leafy rape, Chinese mustard, lettuce and Chinese cabbage were examined. The kinetic experiments revealed that high sorption rates were observed for these plants that had high lipid contents. For two emerging contaminants with polar functional groups, their resulting isotherms were strongly linear (R2 = 0.92 to 1.00), indicating that the sorption was dominated by partitioning. Moreover, regression correlation showed that log Klip, the lipid-water partition coefficient, and log Kow, the octanol-water coefficient, for these organic chemicals were strongly linear-related, following the equation: log Klip = 0.894 × log Kow+0.219 (R2 = 0.953). The correlation equation allows the prediction of the sorption capacity of plant species for an organic compound when the plant composition and the log Kow of the chemical are determined. This improved model containing different organic chemicals with a wide range of log Kow (2.73-4.80) and including emerging contaminants was established, which shows further utilization for predicting the sorption of organic contaminants by plants. © 2016 Elsevier Ltd. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/446309 | ISSN: | 00456535 | DOI: | 10.1016/j.chemosphere.2016.03.111 | SDG/關鍵字: | Contamination; Food supply; Forecasting; Industrial chemicals; Lipids; Naphthalene; Partitions (building); Sorption; Composition model; Correlation equation; Emerging contaminant; Octanol-water partition coefficient; Organic contaminant; Petroleum contaminants; Polar functional groups; Water partition coefficients; Organic chemicals; 4 bromo diphenyl ether; 4,4' isopropylidenediphenol; aromatic compound; diphenyl ether; naphthalene; octanol; organic compound; para xylene; petroleum; toluene; unclassified drug; organic compound; pollutant; bioaccumulation; biochemical composition; biological uptake; concentration (composition); equilibrium; experimental study; food chain; food security; leafy vegetable; lipid; partition coefficient; petroleum; pollutant; reaction kinetics; sorption; Article; Brassica juncea; chemical structure; Chinese cabbage; isotherm; leafy vegetable; lettuce; physical chemistry; phytoremediation; analysis; Brassica; chemistry; food contamination; kinetics; mustard; pollutant; theoretical model; Brassica juncea; Brassica rapa subsp. pekinensis; Lactuca; Brassica; Environmental Pollutants; Food Contamination; Kinetics; Lettuce; Models, Theoretical; Mustard Plant; Organic Chemicals |
顯示於: | 農業化學系 |
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