245.7z.001 Here

: High-purity argon gas carries the vapor into the CVAFS analyzer , where it is exposed to UV light (253.7 nm), causing fluorescence that is then measured. Critical Interferences

The method relies on . Unlike traditional absorption methods, CVAFS measures the light emitted by excited mercury atoms.

: Moisture and water vapor must be removed using drying tubes to prevent "quenching," which weakens the fluorescence signal. Application and Precision 245.7z.001

) concentrations in various water sources, including drinking water, surface water, and industrial wastewater. It is favored for its high sensitivity, allowing for detection at parts-per-trillion levels. Technical Principles

: The use of high-purity argon (99.998%) is mandatory; using nitrogen or air significantly reduces sensitivity. : High-purity argon gas carries the vapor into

To maintain accuracy, analysts must manage several chemical interferences:

The identifier typically refers to the first part of a split compressed archive (using the .7z format) rather than a specific essay title or academic topic. If this file contains an essay, it cannot be read without the remaining parts of the archive and the software to extract it. : Moisture and water vapor must be removed

This method is performance-based, meaning laboratories can use different equipment, such as the PSA Millennium Merlin or Teledyne QuickTrace , provided they meet strict quality control standards. It typically operates within a calibration range of 5 ng/L to 100 ng/L.