Agilent Manuals

This document describes an improved chromatographic method for monitoring the bisphenol-A manufacturing process using Agilent RRHT Eclipse XDB-C18 columns. These columns use 1.8-µm particles versus conventional 3.5-µm or 5-µm particles, allowing seven times faster analyses, improved resolution, and higher sensitivity.

This document describes the use of vitamin E (tocopherol), phenolic antioxidants, and erucamide slip additives in polypropylene homopolymer formulations, as well as their analysis and detection using liquid chromatography with ultraviolet/visible detection. The Agilent 1200 Rapid Resolution LC system with Agilent ZORBAX RRHT columns allows for rapid separation of these antioxidants with the same or improved resolution. The Agilent method translator can be used to convert the ASTM method into new methods based on instrument parameters, column dimensions, and particle size in three modes: simple conversion, speed optimized, and resolution optimized methods.

This application note describes the use of the Agilent 1200 Series Rapid Resolution LC (RRLC) system for the separation of antioxidants and erucamide. The system can operate significantly faster than conventional HPLC systems without sacrificing resolution, precision, or sensitivity. The column chemistry and temperature influence on the separation and the sample preparation method are also discussed.

This application describes a method for determining the ester and linoleic acid methyl ester content of fatty acid methyl esters (FAME) intended for use as pure biofuel or as a blending component for heating and diesel fuels. The method is suitable for FAME con- taining methyl esters between C14 and C24. This applica- tion used the Agilent 6850 System and HP-INNOWax column; calibration was achieved with internal standards of methyl heptadecanoate. After analyzing several differ- ent types of biodiesel, excellent precision was obtained, exceeding the EN14103 method specifications.

Agilent 7890A gas chromatograph GC x GC technology introduction

This document introduces a high-pressure liquid injection device that can be used for high precision and accuracy measurements of highly volatile liquefied hydrocarbons in gas chromatographs. The device consists of a needle interface and a liquid rotary valve, and can be used to sample light petroleum matrices with broad boiling point distributions.

This document introduces the technology for analyzing trace compounds in ethylene using the Agilent 7890A GC, including methods for analyzing trace oxygenates and hydrocarbons.

This application brief describes a configuration of Agilent 7890A GC with three parallel channels and a TCD detector that provides complete refinery gas analysis (RGA), including nitrogen, hydrogen, oxygen, carbon monoxide, carbon dioxide, hydrogen sulfide, and methane, on one instrument.

A single, rapid GC method for aromatic solvent purity analysis is described. The application of a high-efficiency 0.18-mm-id GC column results in faster analyses compared to conventional 0.25-mm- or 0.32-mm-id columns without losing mea- surement performance.

This document introduces the structure and use of Agilent 7890A high pressure injector. It is a high pressure liquid sample injector for gas chromatography analysis, which can accurately and quickly analyze high volatile liquid samples.

Agilent Technologies has published an application note on the use of automated backflush on its 7890A/5975A GC-MS system, with a specific example of monitoring biomarkers in crude oil.

The stationary phase of a GS-OxyPLOT column is a proprietary, salt deactivated adsorbent. GS-OxyPLOT columns show unique selectivity to oxygenated hydrocarbons, excellent stability and reproducibility, long column lifetime, and a wide application range.

The document describes the use of Agilent's dual plasma sulfur chemiluminescence detector (DP SCD) and an online dilutor for the analysis of sulfur compounds. This method achieves detection limits of sulfur compounds at the ppb level. The long-term and short-term stability of DP SCD shows that its performance is stable, and no hydrocarbon interference was found during the analysis of natural gas samples.

The document is about the analysis method of electroless plating bath, using capillary electrophoresis technology, can detect metal ions and inorganic anions