Tag: miniGC App Note

miniGC App Note – Phenols (EPA 604)

Analysis of Phenols (US EPA Method 604) in the miniGC Introduction Phenols or phenolic compounds are toxic compounds that are found in bodies of water that originate from industrial pollution as well as natural decomposition of animal and plant materials. Reference Method (https://www.restek.com/en/pages/chromatogram-view/GC_CF01131) Column MXT-5, 30 m, 0.28 mm ID, 0.25 µm Sample 604 Phenols…
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miniGC App Note – Phthalates (EPA 606)

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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miniGC App Note – C7-C40 Saturated Alkanes

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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miniGC App Note – Semivolatiles (EPA 8270)

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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miniGC App Note – Terpenes

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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miniGC App Note – Residual Solvents

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 Temp.: Hold at 35 °C…
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miniGC App Note – Active Compounds (Xil-350)

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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Analysis of Whiskeys by GC-FID

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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Capsaicin in Peppers

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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Using the Lucidity miniGC to Profile Edible Oils

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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