in spectroscopy: Data value in a datastream in the absence of any analyte or interference.

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

Toxic mercury remnants of gold rush will seep into San Francisco area waterways for millennia | EVISA's News
Instrument database: LUMEX Ltd. - Atomic Absorption Spectrometer MGA-1000
Instrument database: Shimadzu Europe - AA-6800
Link database: Italy: Interdepartmental Research Center “Role of Metal Ions in Biomedical Sciences - BIOMÉTION”
Instrument database: Bruker AXS GmbH - D8 FOCUS - Powder Diffraction System
Instrument database: Prince Technologies B.V. - Lambda 1010 UV-VIS Detector
Instrument database: Varian Inc. - 820-MS
Instrument database: Dionex Corporation - EDA50A Electrochemical Detector
Journals database: Clinical Nutrition
Link database: National Research Council: Selenium in Nutrition
Instrument database: Brooks Rand Labs - Modell III Mercury Analyzer
Instrument database: PerkinElmer Inc. - AAnalyst 600
Instrument database: Analytik Jena AG - ZEEnit 650
Instrument database: Aurora Biomed - TRACE AI1200 Atomic Absorption Spectrometer
Instrument database: GBC Scientific Equipment Ltd. - Integra XL
Canada finalises environmental guideline for hexavalent chromium | EVISA's News
Instrument database: Hitachi - Science & Technology - Z-2700 Furnace Only AA Spectrophotometer
Instrument database: PerkinElmer Inc. - PinAAcle 900H Atomic Absorption Spectrometer
Int. Workshop on Harmonization of Mercury Measurements Methods and Models to Assess Source-Receptor Impact on Air Quality and Human Health | EVISA's Agenda of Events
Instrument database: Chemito Instruments Pvt. Ltd. - AA203 Fully automated multi-element AA Spectrophotometer