GCMS Screening - How Does It Work?

The most hazardous chemicals have impacts in the environment at extremely low concentrations.

Complex sample matrices can often obstruct the identification of target compounds by high-level chemical noise, resulting in substandard library match factors. Background subtraction is both matrix-and-operator dependent and this can generate inconsistent results.

By deploying three complementary steps of confirmation the accuracy of target identification is dramatically increased. An additional manual search facility and specialist target analysis is also available (Option 2). This enables the identification of unknown compounds found in a sample chromatogram by comparing them to an extensive database. Positive identification is achieved by match quality against ~190,000 chemicals, helping customers identify contamination sources and understand the extent of the problem they are facing.

These methods of investigation and detection are constantly evolving. This analysis can be tailored to meet a customer's specific requirements and guarantees not only accurate results but reduced monitoring costs.

To discuss how the NLS GC-MS Multi-Residue Screen could help you, please contact our Customer Service Team.