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CAN77204: Determination of Formic and Acetic Acids in Petroleum Products by Ion Chromatography

Instrument Type: IC

Organic acids in crude oil, fuel, etc., are one of the biggest concerns of the oil, oil refining, and car manufacturing industries. Because of their corrosive properties and the associated costs of corrosion, organic acids have become a topic of great industrial interest. Ion chromatography (IC) can be used for the determination of low molecular weight organic acids in aqueous or water-miscible matrices. This application note summarizes the use and evaluation of an automated IC method for the direct determination of acetate and formate in diesel, oil, and diesel/oil mixtures.

CAN118: Determination of Trace Sodium in Diesel and Biodiesel Fuel

Instrument Type: IC

Sodium determination in diesel fuel using inductively coupled plasma-optical emission spectrometry (ICP-OES) is possible; limits of detection are ~0.1 ppm. The goal of this study was to develop and test an alternate approach using IC for the determination of cations in diesel fuel. The approach focused on the use of commercially available modules and existing standard chromatographic conditions. The challenge was to design an automated, cost-effective, fast, and sensitive method that can provide 10–100 times greater sensitivity than ICP-OES method and does not require manual extraction steps.