Abstract Analysis of biological samples is affected by interfering substances with chemical
properties similar to those of the target analytes, such as drugs. Biological samples such as …

Biologically active compounds are found in biological samples at relatively low
concentration levels. The sample preparation of target compounds from biological …

Microextraction techniques have attracted the attention of many researchers working in the
field of bioanalysis due to their unique advantages, mainly in downsizing the scale of …

Sample preparation is a critical step in the separation of target analytes from complex
matrices, which can influence the reliability and accuracy of the resulting analysis. Recent …

In recent years, major attention has been focused on microextraction procedures that allow
high recovery of target analytes, regardless of the complexity of the sample matrices. The …

Sample pretreatment techniques or preconcentration constitute a very important step before
the analysis of environmental, clinical, pharmaceutical, and other complex samples. Thanks …

Sample treatment has been the focus of intensive research in the last 20 years since it still
remains a bottleneck in precise analytical procedures. The low concentration of the target …

In recent years, the interest in new extraction methods with lower sample volume
requirements, simpler equipment and handling, and lower reagent consumption, has led to …

Abstract Green Analytical Chemistry (GAC) principles have influenced the development of
analytical methods with minimal sample handling and operations, in contrast to conventional …

Extraction of endogenous compounds and drugs and their corresponding metabolites from
complex matrices, such as biofluids and solid tissues, requires adequate analytical …