This research investigates the fate and transport of methyl tert-butyl ether (MTBE) in phytoremediation, particularly the uptake and volatilization of MTBE in lab-scale hydroponic systems. The research reveals that MTBE was taken up by hybrid poplar cuttings and volatilized to the atmosphere. Volatilization of MTBE occurred through both stems and leaves. The concentration of MTBE in the transpiration stream declined exponentially with height, indicating that the uptake and volatilization along the stems are an important removal mechanism of MTBE in phytoremediation. Volatilization, via diffusion from the stems, has not been directly measured previously. No volatile MTBE metabolites were detected; however, mass balance closure and metabolite detection were not primary objectives of this study. The greatest amount of MTBE in plant biomass was associated with the woody stems from the previous year's growth, owing in part to the large biomass of stems. MTBE in the plant tissues appears to reach a steady state concentration and there does not appear to be an accumulation process that could lead to highly elevated concentrations relative to the groundwater source.
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http://dx.doi.org/10.1080/16226510490454821 | DOI Listing |
Curr Res Toxicol
February 2025
ToxStrategies, Durham, NC, United States.
Methyl -butyl ether (MTBE) is a high-octane fuel component that helps gasoline burn cleaner and reduces automobile emissions. In 1999, the International Agency for Research on Cancer (IARC) categorized MTBE as "not classifiable" regarding human carcinogenicity. Since then, additional studies have been published that substantially added to the evidence base to examine the carcinogenic potential of MTBE in humans.
View Article and Find Full Text PDFAnal Chim Acta
April 2025
Australian National Phenome Centre, Health Futures Institute, Harry Perkins Institute, Murdoch University, Perth, WA, Australia; Centre for Computational and Systems Medicine, Health Futures Institute, Harry Perkins Institute, Murdoch University, Perth, WA, Australia. Electronic address:
Background: Robust tissue pre-treatment and lipid extraction workflows are crucial to metabolic phenotyping studies and accurate interpretation of lipid profiles. Numerous methods for lipid extraction from tissues have been developed, and the choice of technique influences analysis. This study provides a comprehensive evaluation of six liquid-liquid extraction methods (three biphasic and three monophasic) used for lipidomic tissue analysis by liquid chromatography-mass spectrometry.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
June 2025
Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box- 36, P.C. 123, Al- Khoudh, Muscat, Sultanate of Oman. Electronic address:
In this study, a hydrothermal approach was used to couple three-dimensional InO cubes with graphitic carbon nitride (g-CN) nanosheets to form InO/g-CN composites. To investigate the charge carrier border for photocatalytic enhancement, pure InO, pure g-CN and InO/g-CN composites were prepared. The coupling of InO particles to the g-C3N4 nanosheets was examined using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL) spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy (UV-DRS) and electrochemical impedance spectroscopy (EIS).
View Article and Find Full Text PDFEnviron Health (Wash)
February 2025
Department of Occupational Health and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China.
Previous studies have shown that methyl -butyl ether (MTBE) could interfere with lipid metabolism. However, there is still a lack of epidemiological reports on the association between MTBE exposure and the risk of nonalcoholic fatty liver disease (NAFLD). In this study, a cross-sectional study was performed with data from the 2017-2020 cycles of the National Health and Nutrition Examination Survey (NHANES).
View Article and Find Full Text PDFFoods
February 2025
Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing 100048, China.
(L.) DC is a long-used medicinal and edible plant in China folk. Its hyperglycemic effects have garnered increasing public attention in recent years.
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