A single method for analyzing aromatic solvent purity is described. This Unified Aromatic Solvent application consolidates ten separated American Society of Testing and Materials methods into an easy-to-use gas chromatography method. An Agilent 6820 gas chromatography system configured with split/splitless inlet and flame ionization detector is used. The successful use of nitrogen as a carrier gas for this application is also demonstrated.
This document presents a unified gas chromatography (GC) method designed to consolidate ten separate American Society for Testing and Materials (ASTM) methods into a single, easy-to-use procedure for analyzing aromatic solvent purity. The method is specifically optimized for the Agilent 6820 Gas Chromatography System configured with a split/splitless inlet and flame ionization detector (FID). A key feature of this application is the successful demonstration of using nitrogen as a carrier gas, which is common in China, offering cost savings without compromising chromatographic performance.
| System Model | Agilent 6820 Gas Chromatograph |
|---|---|
| Inlet Type | Split/splitless |
| Detector Type | Flame Ionization Detector (FID) |
| Carrier Gas | Nitrogen |
| Column Type | Carbowax or Packed 10% TCEPE |
| Split Ratio | 100:1 |
| Injection Volume | 1.0 uL |
| Oven Temperature Program | 78 °C to 145 °C to 220 °C |
The method consolidates ten separated ASTM methods for analyzing aromatic solvents, including D2306, D2360, D3760, D3797, D3798, D4492, D4534, D5060, D5135, and D5917.
Nitrogen is used as the carrier gas for this application.
The split ratio used for the injections is 100:1.