HS-GC: Analyzing VOC in Commercial Paint (May 2024)

Sensory Directed Analysis quickly identifies off-odors associated with lipid oxidation in food products such as edible oils and fats. Automated solventless extraction of food products is carried out using DHS or direct thermal extraction. This is followed by a concentration step and GC-O/MS determination of odors. The use of olfactory and MS detection enables the simultaneous determination of sensory-active regions of the chromatogram and mass spectral identification of associated compounds. The dedicated evaluation software ensures an efficient identification of the off-odors based on the GC-O/MS data.

Fully automated method for 3-MCPD and Glycidol determination in edible oil by GC-MS, based on the widely used methods ISO 18363-1, AOCS Cd 29c-13, and DGF C-VI 18 (10). The automated GC-MS determination of 3-MCPD and glycidol in edible oils with evaporation step and GC column backflush ensures low LODs by eliminating excess derivatization reagent for improved method stability and system ruggedness.

Fully automated method for 3-MCPD, 2-MCPD and Glycidol determination in Edible Oil and Fat based on ISO 18363-4 - Zwagerman/Overman with validation data. A recent upgrade to PTV injection has further improved the quality and robustness of results. Fatty acid esters of 3- and 2-monochloropropanediol (3-MCPD-e, 2-MCPD-e) and glycidol (Gly-e) are process contaminants that are formed, for example, when edible oils and fats are refined. After ester cleavage during digestion in the human body they pose a relevant health risk and therefore need to be determined in edible oils and fats and in fat containing food.

The AppNote describes the fully automated determination of MOSH/MOAH in Food and Packaging extracts following DIN EN 16995. Industrial production, processing and transportation invariably put food at risk of contamination with MOSH/MOAH. To ensure a reasonable cost benefit balance, high laboratory productivity and good quality of results, leading contract laboratories increasingly strive to automate their processes. An example is the determination of MOSH/MOAH using a LC-GC-FID Coupling Platform. Depending on the sample matrix, additional automated sample preparation by aluminum oxide clean-up, epoxidation, and/or saponification is necessary prior to analysis. The dedicated evaluation software integrates the complex MOSH/MOAH chromatograms accurately and reproducibly.

When it comes to water analysis, it can be challenging for labs to keep up with ever-changing testing regulations while also executing time-efficient, accurate, and risk-mitigating workflows. To ensure the safety of our water, there are a host of national and international regulators such as the US Environmental Protection Agency (EPA), World Health Organization (WHO), and the European Union (EU) that demand stringent testing methods for drinking water and wastewater. Those methods often call for fast implementation and lengthy processes, as well as high sensitivity and reliable instrumentation. This paper explains how your ICP-MS, ICP-OES, and LC-MS-MS workflows can be optimized for compliance with the latest requirements for water testing set by regulations like US EPA methods 200.8, 6010, 6020, and 537.1, along with ISO 17294-2. It will discuss the challenges faced by regulatory labs to meet requirements and present field-proven tips and tricks for simplified implementation and maximized uptime.

Hamilton has produced a series of reference guides to assist science professionals in finding the best-suited products and configurations for their applications. The Syringe and Needle Reference Guide provides detailed information on Hamilton Company’s full portfolio of syringes and needles. Everything from cleaning and preventative maintenance to individual part numbers are available for review. It also includes selection charts to help you choose between syringe terminations like cemented needles and luer tips.