New trends in sample preparation techniques for environmental analysis.
Environmental samples include a wide variety of complex matrices, with low concentrations of analytes and presence of several interferences. Sample preparation is a critical step and the main source of uncertainties in the analysis of environmental samples, and it is usually laborious, high cost, time consuming, and polluting. In this context, there is increasing interest in developing faster, cost-effective, and environmentally friendly sample preparation techniques. Recently, new methods have been developed and optimized in order to miniaturize extraction steps, to reduce solvent consumption or become solventless, and to automate systems. This review attempts to present an overview of the fundamentals, procedure, and application of the most recently developed sample preparation techniques for the extraction, cleanup, and concentration of organic pollutants from environmental samples. These techniques include: solid phase microextraction, on-line solid phase extraction, microextraction by packed sorbent, dispersive liquid-liquid microextraction, and QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe).
a CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde , Gandra , Portugal.
Cláudia
C
Ribeiro
Ana Rita
AR
Ribeiro
Alexandra S
AS
Maia
Virgínia M F
VM
Gonçalves
Maria Elizabeth
ME
Tiritan
D000818:Animals; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods*; D004785:Environmental Pollutants / Q000032:analysis* / Q000302:isolation & purification; D004867:Equipment Design; D006801:Humans; D059627:Liquid Phase Microextraction / Q000295:instrumentation / Q000379:methods*; D009930:Organic Chemicals / Q000032:analysis / Q000302:isolation & purification; D052616:Solid Phase Extraction / Q000295:instrumentation / Q000379:methods*
D004785:Environmental Pollutants; D009930:Organic Chemicals
Dispersive liquid-liquid microextraction; QuEChERS; environmental analyses; microextraction by packed sorbent; on-line solid phase extraction; sample preparation; solid phase microextraction