Agilent Manuals

This application note successfully demonstrates the selective retention and resolution of low molecular weight sulfur containing species on an Agilent J&W GS-OxyPLOT column. The selective retention for sulfur species enables enough of a retention shift away from hydrocarbon matrices such as base gasoline and n-butane to demonstrate the feasibility of effective quantification of sulfur species in process streams. Using an Agilent J&W GS-OxyPLOT column it is possible to shift the retention of sulfur containing analytes away from a hydrocarbon matrix to achieve effective quantification in the low ppm range.

This document introduces an economical solution to test permanent gases and light hydrocarbons using the Agilent 7820A GC 3-valve system. The Agilent 7820A Gas Chromatograph equipped with three valves, a flame ionization detector (FID), and a thermal conductivity detector (TCD), is configured for analysis of permanent gases and light hydrocarbons. The TCD channel with packed columns is used to measure H2,CO2,O2, N2,CH4 and CO. A capillary column ( Al2O3 PLOT: 50 m × 0.53 mm) is used to measure all hydrocarbons (C1~C6) including CH4.

This document introduces a method for routine detection and quantification of biomarkers in petroleum using the Agilent 7890A/7000A Series Triple Quadrupole GC/MS with backflushing using a Pressure Controlled Tee configuration. In a single run, diverse biomarkers from several transitions can be detected, confirmed, and quantified at levels as low as 2 ppm, with RSDs well below 5%. This method is suitable for “fingerprinting” of petroleum samples and the deconvolution of oil mixtures in complex, multisource petroleum systems.

This document describes a method for analyzing trace hydrocarbon impurities in benzene using the Agilent 7820A gas chromatograph. The method is simple to use and can be used to analyze benzene and other aromatic solvents for impurities.

accurately measure particle sizes of polymers, applications in coatings, paints, adhesives, drug delivery systems and medical diagnostics

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

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 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.

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.

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.

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 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.

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 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.