Electrochemical Characterization of Tea-derived Dissolved Organic Matter: Implications for Electron Shuttling

Purpose Dissolved organic matter (DOM) plays an important role in the cycling of elements and the transformation of pollutants in the environment due to its electron-transfer capacity (ETC), but ETC may be affected by environmental factors such as pH and ionic strength. This study was aimed to reveal the effects of pH and ionic strength on the ETC of DOM and the possible mechanisms. Materials and methods DOM was prepared into solutions with various pH values (4, 6, 7, 8, and 10) and ionic strength (0.001, 0.01, 0.1, and 0.5 mol/L KCl). ETC of DOM including electron-accepting capacity (EAC) and electron-donating capacity (EDC) was determined with chronoamperometry. Spectroscopic and chromatographic properties of DOM were evaluated to obtain related structural information to explore the possible mechanisms for the ETC changes. Results and discussion Both the EAC and EDC of DOM increased consistently with increasing pH from 4 to 10. EAC and EDC increased with increasing ionic strength, peaked at 0.1 mol/L KCl, and then decreased. Gel permeation chromatogram displayed different molecular size distribution for the DOM in solution with different pH and ionic strength.Conclusions Environmental pH and ionic strength influence the ETC of DOM by altering the conformation of DOM molecules.

show abstract

Environmental pH and ionic strength influence the electron-transfer capacity of dissolved organic matter

Yuan

Tao

et al. 2015

J Soils Sediments

View full text Add to dashboard Cite

show abstract

Formation and risk assessment of trihalomethanes through different tea brewing habits

Fakour

2019

International Journal of Hygiene and Environmental Health

View full text Add to dashboard Cite

Influence of rice straw-derived dissolved organic matter on lactic acid fermentation by Rhizopus oryzae

Chen

Wang

Xue

et al. 2018

Journal of Bioscience and Bioengineering

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Electrochemical Characterization of Tea-derived Dissolved Organic Matter: Implications for Electron Shuttling

Cited by 4 publications

References 28 publications

Environmental pH and ionic strength influence the electron-transfer capacity of dissolved organic matter

Environmental pH and ionic strength influence the electron-transfer capacity of dissolved organic matter

Formation and risk assessment of trihalomethanes through different tea brewing habits

Influence of rice straw-derived dissolved organic matter on lactic acid fermentation by Rhizopus oryzae

Contact Info

Product

Resources

About