title: Determination of ammonium cations and alkali and alkaline earth metal cations in jellyfish by capillary zone electrophoresis.
abstract: We developed a capillary zone electrophoresis method with indirect UV detection for determination of ammonium cations and alkali and alkaline earth metal cations in jellyfish. As the background electrolyte, a mixture of N-methylbenzylamine, citrate, and 18-crown-6 was used for the complete separation of all analyte cations. The limits of detection were 0.13 - 0.34 mg l(-1) at a signal-to-noise ratio of three. The values of the relative standard deviation of peak area were 3.2 - 4.9%. The proposed method successfully determined the above analyte cations in jellyfish for approximately 4 min.
authors.affiliation: Faculty of Maritime Sciences, Kobe University, Kobe, Japan. fukushi@maritime.koobe-u.ac.jp
authors.forename: Keiichi
authors.initials: K
authors.lastname: Fukushi
authors.forename: Shinya
authors.initials: S
authors.lastname: Minami
authors.forename: Motokazu
authors.initials: M
authors.lastname: Kitakata
authors.forename: Masaya
authors.initials: M
authors.lastname: Nishijima
authors.forename: Kuriko
authors.initials: K
authors.lastname: Yokota
authors.forename: Sahori
authors.initials: S
authors.lastname: Takeda
authors.forename: Shin-Ichi
authors.initials: S
authors.lastname: Wakida
mesh_terms: D000818:Animals; D002118:Calcium / Q000737:chemistry; D002412:Cations; D019343:Citric Acid / Q000032:analysis; D004573:Electrolytes; D019075:Electrophoresis, Capillary; D008274:Magnesium / Q000737:chemistry; D008674:Metals, Rare Earth / Q000737:chemistry*; D011188:Potassium / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D015203:Reproducibility of Results; D037401:Scyphozoa; D012964:Sodium / Q000737:chemistry; D013997:Time Factors; D014466:Ultraviolet Rays
chemical_list: D002412:Cations; D004573:Electrolytes; D008674:Metals, Rare Earth; D000644:Quaternary Ammonium Compounds; D019343:Citric Acid; D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium