Vitamin D deficiency is highly prevalent worldwide, especially with limited sun exposure and
sun avoidance. Thus, reliable monitoring of vitamin D levels in food and biological samples …

Green analytical chemistry principles should be followed, as much as possible, and
particularly during the development of analytical sample preparation methods. In the past …

Macroporous hydrogel monoliths having tailor-made features, conductivity,
superstretchability, excellent biocompatibility, and biodegradability, have become the most …

Sample preparation is considered one of the most critical steps in the analytical process.
Conventional sample preparation techniques suffers from both a lack of selectivity and …

Biological samples are usually complex matrices due to the presence of proteins, salts and a
variety of organic compounds with chemical properties similar to those of the target analytes …

Solid phase extraction for sample pretreatment offers many advantages, including short
processing time, rapid separation, high enrichment efficiency and recovery rate, no emulsion …

The major challenges in determination of antibiotic residues in foods stem from the
complexity of matrix, as well as from polar differences and low concentrations of antibiotics …

We synthesized a stable and reusable Schiff base complex of copper immobilized on core–
shell magnetic nanoparticles [Cu (II)-SB/GPTMS@ SiO2@ Fe3O4] with simple, efficient, and …

This review (with 168 refs) summarizes the progress that has been made on the field of
microextraction of heavy metal ions using carbonaceous materials. Following an …

Zinc ferrite is a type of photocatalytic material with high physicochemical stability, narrow
band gap, high carrier separation efficiency, high porosity, and paramagnetism, which …