Analysis of Phthalate Esters (US EPA Method 606) in the miniGC Introduction Phthalates or phthalate esters are plasticizers that add flexibility to materials like PVC (polyvinylchloride). They are a very commonly occurring persistent organic pollutant (POP) that can be found in the environment and food and are a toxicity concern, therefore methods and regulations like…
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Analysis of C7-C40 saturated alkanes standard in the miniGC Introduction In this app note we run a standard in the miniGC containing saturated alkanes from C7 (Heptane) to C40 (Tetracontane). The compounds are the constituent compounds of gasoline, diesel fuel, kerosene, and motor oils, therefore it is an important test for a GC to be…
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Analysis of Semivolatile Organic Compounds (SVOCs) in the miniGC Introduction In this app note we run a standard in the miniGC containing 13 compounds considered to be Semivolatile Organic Compounds (SVOC), a class of compounds that are monitored by EPA Method 8270 as contaminants in solid waste, soils, surface water, ground water, and air. The…
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Analysis of Terpenes in the miniGC Introduction Shown here are a couple of different terpenes mixes run with a few different methods. miniGC Method 1 Column MXT-5, 30 m, 0.25 mm ID, 0.25 µm (cat.# 70223-LUC25) Sample Injection Inj. Vol.: 1.0 µL split (split ratio 20:1) Liner: 4 mm low pressure drop precision inlet liner…
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Analysis of Residual Solvents standard in the miniGC miniGC Method Column MXT-624, 30 m, 0.25 mm ID, 1.40 µm (cat.# 70968-LUC25) Sample Injection Inj. Vol.: 1.0 µL split (split ratio 10:1) Liner: 4 mm low pressure drop precision inlet liner w/ wool (cat.# 23309) Inj. Temp.: 280 °C Oven Oven…
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Analysis of Active Compounds (Restek Test Mix Xil-350) in the miniGC Introduction This test mix is used to test activity in the flow path, from the injection port all the way through to the detector. If there are too many active sites in the system, the peak shapes will be poor. This particular set of…
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Daniel Iversen, R&D Chemist, Lucidity Introduction While spending time with my family over the holiday season, I was given a bottle of whiskey by my father-in-law, who boasted that it was a very fine bottle of whiskey and he paid top dollar for it. This got me wondering if there was a way to tell…
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by Dan Iversen, Lucidity R&D Scientist While doing inventory in the lab, I came across a vial of pure capsaicin. I wondered why we had capsaicin. Rather than throw it out, I decided to use it to know the level of capsaicin in the hot peppers that I eat. After a quick google search to…
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Fatty Acid Analysis by GC FID of Common Cooking Oils Daniel Iversen, R&D Chemist, Lucidity Introduction Cooking oils are used in a variety of foodstuffs, and they are used for frying and baking. Identification of the specific oils used in a process would be useful for health reasons and for cost savings. This study uses…
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by Daniel Iversen, R&D Chemist, Lucidity With the introduction of CBD in so many products, making sure that the labeled amount is whatthe consumer is getting. Many studies have been done on the CBD oil tincture, so I wanted tofocus on something a bit different. My father-in-law uses CBD hand cream to help with hisarthritis…
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