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Automated Sample Clean-up in PCB and Dioxin Analysis

For Samples Hardening at Room Temperature

The automated system DEXTech Heat especially cleans up samples that need to remain melted in PCB and dioxin analysis by keeping the sample liquid with three heating zones - from sample vial to the first column.

In PCB and dioxin analysis, there is an increasing amount of samples that harden at room temperature and thus generate challenges for automated clean-up. LCTech GmbH, the specialist for automated sample preparation, has launched a new system on the market that automatically processes especially these samples without the need for additional tools or manual handling.

DEXTech Heat, which is based on the unique technology and functionality of the established DEXTech Pure system, processes even difficult samples such as stearin or PFADs. Without clogging, automated, reliable and with best results.

Integrated heating zones heat up all components of the system that are relevant for processing the sample and to keep the sample liquid throughout the clean-up process – from sample vial to loading onto the first column. This prevents clogging of the first clean-up column. In addition, the homogeneous consistency of the sample ensures a better distribution of the quantification standard and thus better recoveries.

The temperature of the three heating zones can be set individually via a central control unit.

Like the approved DEXTech Pure, DEXTech Heat separates PCBs and dioxins in one fraction each via a 3-column set-up based on aluminium oxide. The subsequent measurement can be performed for dioxins and PCBs in one GC-MS run each. Default methods in compliance with current regulations are already stored in the system. In case the user only analyses PCBs, an additional shortened method is available that saves time, solvents and costs.

Parallel to the fractionation, offline heating of the next sample is possible which additionally saves time. Besides that, the system can also be used without heating for ordinary samples that do not harden at room temperature at any time. Once the system has started, no further manual action is required.

Permanent automated rinsing steps of the system and exchangeable columns ensure that cross-contamination is reliably avoided at any time.

A multitude of safety features ensures the security of the user during the whole runtime. Like the entire DEXTech product family of LCTech, DEXTech Heat is conform to the EPA method and European regulations.

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The LCTech GmbH with its headquarters in Obertaufkirchen develops and sells since 1998 innovative products and methods for the preparation and analysis of environmental, food and feed as well as for forensic samples. The products range from GPC systems to fully automated solutions for mycotoxin analysis. LCTech is represented by an extensive network of distributors worldwide and even exclusive distributor of PICKERING Laboratories in Europe, Africa, the Middle East and the CIS countries.
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