OBRIST, Heinrich. On-line Festphasenextraktion (SPE) für die HPLC: On-line Solid Phase Extraction for LC Analysis. CHIMIA, [S. l.], v. 55, n. 1-2, p. 46, 2001. DOI: 10.2533/chimia.2001.46. Disponível em: https://www.chimia.ch/chimia/article/view/2001_046.. Acesso em: 31 oct. 2024.