Sammanfattning
A novel amperometric HPLC detection method for the cyanobacterial (blue- green algal) peptide toxins microcystin-LR, -YR and -RR was developed. Purified microcystins and cyanobacterial extracts were chromatographed using an internal surface reversed-phase column with acetate- and phosphate-based mobile phase systems. Electrochemical oxidation reactions at 1.20 V vs. Ag/AgCl (glassy carbon working electrode) were shown to originate in arginine and tyrosine residues of microcystins.
| Originalspråk | Engelska |
|---|---|
| Sidor (från-till) | 226-230 |
| Antal sidor | 5 |
| Tidskrift | Journal of Chromatography A |
| Volym | 810 |
| Nummer | 1-2 |
| DOI | |
| Status | Publicerad - 12 juni 1998 |
| MoE-publikationstyp | A1 Tidskriftsartikel-refererad |
Finansiering
We thank Dr. Tore Lindholm for the field sample, Dr. Kaarina Sivonen for the original Anabaena material, Mrs. Katriina Kurki-Helasmo for growing the cyanobacteria, Mr. Markku Reunanen for the electrospray MS in the characterization of the purified toxins and Mr. Allan Nurmi for technical assistance. B.K. thanks the Erasmus scheme for a travel grant.
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