Photoluminescent green methods applied to tobacco products, biological and environmental samples.

FERNANDEZ, LILIANA

Barcelona

Conferencia; World Conference on Analytical & Bioanalytical Chemistry; 2018

Scientific Federation

Photoluminescent methodologies are a group of powerful analytical tools used for trace analytes determination due to their inherent sensitivity. However, when real samples are analyzed, many times troubles arise due to the matrix complexity. In order to overcome these difficulties, different strategies must be applied. The need for more selective systems of separation analytes has produced important developments of chemical separation techniques. Cloud Point Extraction (CPE) processes have been reported for extraction of metal ions, biological and clinical species and environmental clean-up methods. Any species associated to micellar aggregates can be extracted from the initial solution and preconcentrated in a small volume of the surfactant-rich phase prior to instrumental determination, improving selectivity and sensitivity. Likewise, Solid Phase Extraction (SPE) has come to the forefront compared to other preconcentration and/or separation techniques. Both of these strategies offer several advantages such as operational flexibility, high enrichment factors, low cost and simplicity, reducing consumption and exposure to toxic solvents, representing environmentally friendly alternatives.In this speech, results obtained of developed photolumininescent methodologies will be presented; CPE and/or SPE steps were used for analytes isolation.