We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Norm index for predicting the rate constants of organic contaminants oxygenated with sulfate radical.
- Authors
Shi, Yajuan; Yan, Fangyou; Jia, Qingzhu; Wang, Qiang
- Abstract
The degradation of organic contaminants in aquatic systems has raised immense attention worldwide, and the second-order rate constant ( k SO 4. − ) of water pollutants oxidized by sulfate radical anion is an important index for assessing the degradation efficiency of organics. Herein, a new norm mathematical formula is defined. Based on this, four new descriptors are proposed and a QSPR model is developed for predicting k SO 4. − using 30 families of emerging organic pollutants in water. The statistical results fully prove that this model has good fitting effect and stability with R2 of 0.8862, Q2LOO of 0.8466, and Q25-fold of 0.8329, respectively. The validation results including cross validation, applicability domain analysis, and model comparison show that this model has good robustness, predictive performance, and reliability. These decent results indicate that the new norm mathematical formula is effective in calculating descriptors and the norm indexes have a great application for evaluating the transformation fate of organic pollutants by sulfate radical in aquatic systems.
- Subjects
ORGANIC water pollutants; POLLUTANTS; PERSULFATES; EMERGING contaminants; SULFATES; WATER pollution
- Publication
Environmental Science & Pollution Research, 2020, Vol 27, Issue 1, p974
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-019-07046-1