Analyte desorption and ionisation are separated using thermal desorption ambient mass spectrometry. Here, analytes are heated in conductive, convective, and/or radiative modes and thermally desorbed directly from a primary surface or a wipe collection. This mode has been widely used in the field of trace detection to analyse wipe-collected materials quickly and consistently.
Similar to this, recent initiatives have shown how useful thermal desorption of wipe-collections is for forensic analysis. The Surface and Trace Chemical Analysis Group is working on a range of research projects for the security and forensic chemistry industries that require the quick screening of wipe-collected materials.
This is done by thermally desorbing analytes from a wiping material, much as the commonly used ion mobility spectrometry (IMS) systems for screening.
As a surface’s temperature is raised, desorbed molecules are observed using a technique called temperature-programmed desorption (TPD).
This experimental approach is frequently also known as thermal desorption spectroscopy or thermal desorption spectrometry when studies are conducted utilising well-defined surfaces of single-crystalline materials in a continuously pumped ultra-high vacuum (UHV) chamber (TDS).
By heating the contaminants in a device called a “thermal desorber” to cause the impurities to evaporate, thermal desorption eliminates organic contaminants from soil, sludge, or silt. The pollutants are separated from the solid substance by evaporation, which transforms them into vapours (gases).
Adsorbing onto a surface after coming into contact with it, molecules or atoms reduce their energy by creating a connection with the surface. The adsorbate and surface combination affects the binding energy differently.
The Global Thermal Desorption Mass Spectrometer Market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Markes International Ltd., a manufacturer of specialised analytical thermal desorption instruments, has announced the release of their new thermal desorption (TD) instrument for gas chromatography (GC). The TD-100 is a fully automated, affordable instrument that meets with industry standards and can be connected to any brand of GC or GC/MS.
It is a large-capacity instrument ideal for high-throughput laboratories since it allows for the sequential analysis of up to 100 sorbent tubes and provides dependable unattended operation for long periods of time. The TD- incorporates RFID sample sorbent tube tracking technology (TubeTAG) as standard to make sample and tube tracking simple and to reduce the possibility of errors.
As a flexible preconcentration method for gas chromatography and GC/MS, thermal desorption (TD) integrates sample preparation, extraction, and injection into a single automated procedure. It is employed in a range of application fields to assess highly volatile to semi-volatile organic chemicals in various solid, liquid, and gaseous samples.
This process complies with accepted practises, is safer and more environmentally friendly than solvent extraction. It is also simple to automate and validate. The sensitivity, adaptability, and dynamic range of Agilent GC and GC/MS instruments with TD systems from Markes International, including Multi-Gas versions, can be tailored to your demands for VOC and SVOC analysis.
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