Petrochem

Analytical chemists aim to inject some much-needed objectivity into the debate on fracking

In this article we take an introductory look at work carried out by TU Clausthal to develop an improved understanding of the mechanisms of enhanced oil recovery (EOR) by polymer flooding, and the relevance of fluid rheology. Example data illustrates the insight that rheology provides and its application in optimizing fluid performance.

Harold McNair shares some of his favorite stories about several pioneers he has worked with.

VUV detection for gas chromatography - how does it fare in real-world applications in industry?

Three experts share their views on gas chromatography-vacuum ultraviolet (VUV) detection

This article explores the role of different components within drilling muds, including barite and calcium carbonate. The need to achieve optimum particle sizes is examined, the application of laser diffraction is considered within this context. Fast, efficient and having a wide measurement range, laser diffraction delivers accurate, precise and reproducible particle size information. Offering automated analysis, it is a preferred method for drilling mud particle sizing and the focus of ongoing API efforts to develop a standard in this area.

The molecular weight, molecular weight distribution and size of two common polymers are measured using SEC-MALS 20. Results from SEC-MALS and conventional calibration are compared and discussed.

The molecular weight, molecular weight distribution and size of three common polymers are measured using OMNISEC. This information can provide insight into the physical properties and behavior of these synthetic polymers.

The techniques of laser diffraction and automated particle imaging support the fast, cost-effective development of nasal spray products, simultaneously providing the data required for regulatory compliance. This paper examines their application.

Read how DLS-based optical microrheology can be used to determine the rheological behavior of polymer solutions and the impact of tracer particle chemistry on the measured microrheological response.