Gas chromatographic determination of phenols as 2,4-dinitrophenyl ethers using glass capillary columns and an electron-capture detector

✍ Scribed by Matti Lehtonen

• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 572 KB
• Volume: 202
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(00)91826-0

✦ Synopsis

An improved gas chromatographic method is described for the determination of all@-and alkoxy-substituted phenols as their 2,4-dinitiophenyl ethers. The gas chromatograpbic analysis is performed on QV-210 glass capillary or SP-2100 fused silica capillary c41Iumns using electron-capture detection. The separation of o-, mand p-substituted phenols and the isomers of dimethylphenols has been achieved. The sensitivity limit of electron-capture detection for various 2J-dinitrophenyl ethers is 0.01-0.09 ng injected and the coefficient of variation is about 5 %_

The reaction conditions for ether formation are described. The optimum pM, temperature and reaction time are 11.5, 50°C and 40 min, respectively.