Naturally occurring kaolinite as a sorbent for solid-phase extraction of calcitriol in soft capsules

Evolution of Green Sample Preparation: Fostering a Sustainable Tomorrow in Analytical Sciences

“…For example, they usually have low selectivity and possess low loading capacities, which can be resolved by their hybridization with other green materials . Some of the most used natural-based sorbents are biopolymers namely cellulose, chitosan, lignin, and others. , In this scenario, a cellulosic paper device coated with different polymers (Nylon or polyamide) has been reported for the modulation of its surface polarity and, hence, modulating its selectivity toward target drugs of abuse, antibiotics, or UV filters in biological and environmental samples. Detailed information about the procedures can be found in the corresponding references. ,, …”