analytical procedure to increase the concentration of analytes in the analytical solution in comparison with that present in the original sample. The techniques used include cryofocussing, gas-solid extraction, solid-phase extraction (SPE), solid-phase microextrraction (SPME), solvent extraction and evaporation.

The term "preconcentration" was found in the following pages:

Instrument database: Tekran Instruments Corporation - Series 3300 Speciating Mercury CEM - Overview
Determination of methylmercury complexes with low molecular mass thiols | EVISA's News
Mercury isotope ratio measurements of methylmercury in fish | EVISA's News
Instrument database: PerkinElmer Inc. - TurboMatrix Automated Headspace Samplers HS-110/HS-16/HS-40
Non-chromatographic separation techniques for speciation analysis | EVISA's News
Directory of scientists: Ralph Edward Sturgeon
Journals database: Microchimica Acta
Instrument database: Tekran Instruments Corporation - Model 2500 CVAFS Mercury Detector
Solid-phase extraction in speciation analysis | EVISA's News
Instrument database: Elemental Scientific Inc. (ESI) - seaFAST - Automated ICPMS Preconcentration System for Undiluted Seawater
Directory of scientists: Dimiter L. Tsalev
Analytical Forum 2004 | EVISA's Agenda of Events
CANAS'09: Colloquium Analytical Atomic Spectroscopy | EVISA's Agenda of Events
Directory of scientists: Carlos Bendicho Hernández
Instrument database: Metrohm AG - 861 Advance Compact IC with Sequential Compression
ICFIA 2011: 17th International Conference on Flow Injection Analysis | EVISA's Agenda of Events
17th Annual International Ion Chromatography Symposium | EVISA's Agenda of Events
5th Black Sea Basin Conference on Analytical Chemistry | EVISA's Agenda of Events
Directory of scientists: Pawel Pohl
Determination of arsenic species in water by means of capillary electrophoresis coupled to electrospray mass spectrometry | EVISA's News