**Author details**

*Advanced Sorption Process Applications*

understanding of behaviour of pesticides on VADS.

**Acknowledgements**

**Conflict of interest**

discussed in this chapter.

Centers) from CONICYT, Chile.

composition (i.e. SOM), mineralogy and variable charge are key components of most VADS, controlling soil sorption of INIH, representing an environmental substrate that may become polluted over time due to intensive agronomic uses. The *pseudo-second-order* model and TSNE have been the models that best describe the kinetics parameter and solute sorption mechanism, respectively, of INIH on VADS. These models are also necessary in order to develop and validate QSAR models to predict pesticide sorption on VADS to prevent potential contamination of water resources and predict environmental risks. In this regard, the last section of this chapter illustrates briefly some of the advances of QSAR models established for predicting the soils' sorption of pesticides with a focus on the mechanistic interpretation. In the generation of QSAR models, the statistical approach is the most used with a posteriori mechanistic interpretation, possibly due to complex sorption mechanisms of pesticides on soils. In the mechanistic approach (a priori mechanistic interpretation), few studies have paid attention to the diversity of soil mineralogy, texture, variable surface charge, OC structures and their implication on sorption of ionisable pesticides. Finally, the use of solute sorption mechanism models and QSAR models for pesticide sorption in soils will contribute to a better

This work was funded via projects DIUMCE FGI 36-17 from Universidad Metropolitana de Ciencias de la Educación, Chile, FONDECYT 11110421 from CONICYT, Chile and FB0807 (Basal Funding for Scientific and Technological

The authors certify that they have no conflict of interest with the subject matter

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Lizethly Caceres Jensen1 \*, Jorge Rodriguez Becerra1 and Mauricio Escudey2,3

1 Laboratory of Physical and Analytical Chemistry, Department of Chemistry and Doctorate in Education Program, Universidad Metropolitana de Ciencias de la Educación, Santiago, Chile

2 Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile

3 Center for the Development of Nanoscience and Nanotechnology, CEDENNA, Santiago, Chile

\*Address all correspondence to: lyzethly.caceres@umce.cl

© 2018 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
