Application Notes: Food and Beverage

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Determination of Three Selected Chlorinated Pesticides at Lowest Concentration Level by Fast GC–MS/MS

Pesticides are widely used to protect agricultural products from mould or insect infestation during growth, storage, and product transport. Intensive use or abuse of pesticides can cause environmental pollution in different areas. Lakes, rivers, and aquifers need to be monitored to protect drinking water. Concentration levels of pesticides down to low fg/μL range must therefore be quantified in organic solvent-based water extracts. Typically, large volume injections (LVI) are used to reach this concentration range.

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SEC-MALS Analysis of Linear and Branched Synthetic Amyloses

Amylose is an occasionally branched biopolymer and, together with amylopectin, the hyper-branched component, a constituent of starch. Determination of branching in amylopectin, an important property affecting viscosity, stiffness, and thermo-mechanical performance, requires a fully linear amylose analogue. This application note describes how synthetic amyloses from enzymatic (phosphorolytic) reaction were checked for their linearity using size-exclusion chromatography-multi-angle light scattering (SEC-MALS).

GC×GC Analysis of Environmental Samples

ByLECO Corporation

-GC×GC offers dramatic improvements over traditional gas chromatography for the analysis of complex mixtures in numerous applications -The power and utility of GC×GC technology -The need for more advanced and novel stationary phases for gas-chromatographic columns

Automated Aroma Profiling of Wine

ByMarkes International, Ltd.

• Robust and sensitive sampling, using HiSorb™ high-capacity sorptive extraction probes with preconcentration on the Centri® platform. • Enhanced confidence in identification, through use of the Tandem Ionisation® providing hard & soft EI spectra in a single run. • Highly sensitive SCD screening for odour taints caused by trace sulfur species.