In trace analysis, this is the unintentional introduction of analyte(s) or other species which are not present in the original sample and which may cause an error in the determination. It can occur at any stage in the analysis. Quality assurance procedures, such as analyses of blanks or of reference
materials, are used to check for contamination problems.

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

CEST2017: 15th International Conference on Environmental Science and Technology | EVISA's Agenda of Events
Virtual: ICBTECE 2021: 15. International Conference on Biogeochemistry, Trace Elements and Chemical Engineering | EVISA's Agenda of Events
Instrument database: Analytik Jena GmbH - novAA® 400
Instrument database: Gilson, Inc - FC 204 Fraction Collector
Link database: US EPA Method 1631: rev.e - Mercury in water by oxidation , purge and trap and CVAFS
Instrument database: Analytik Jena AG - mercur – Combined AAS/AFS spectrometer for mercury determination
Instrument database: AHF analysentechnik AG - EVAPOCLEAN - Clean Acids
Climate change and overfishing are increasing toxic mercury levels in fish | EVISA's News
Arsenic species distribution in drinking water wells in the USA with high arsenic concentrations | EVISA's News
Link database: Chemical Fact Sheet: Thorium
Instrument database: PerkinElmer Inc. - JANUS® Oil Prep Workstation
Instrument database: Gilson, Inc - GX-271 ASPEC™ SolidPhase Extraction system
New arsenic compounds found in herring | EVISA's News
Antimony mine disaster | EVISA's News
Link database: CBER: Mercury in Plasma-Derived Products
Instrument database: Jasco Inc. - AS-2059 Intelligent Autosampler
Instrument database: Brooks Rand Labs - MERX Total Mercury Configuration for EPA 1631
Mercury Speciation Analysis of Dried Blood Spot Samples | EVISA's News
The effect of thermal treatment on the arsenic speciation in food | EVISA's News
Instrument database: Carbolite GmbH - 400°C, 500°C & 600°C Clean room ovens (HT CR)