title: [Micellar solubilized spectrophotometric determination of trace Mn2+ in rhizoma Zedoariae, fruit Amomi and herba Epimedii].
abstract: A green quaternary complex of manganese with o-phenanthroline (Phen), cetyltrimethylammoniun bromide (CTMAB) and chromazurol S (CAS) has been studied in the pH range of 10.10-10.80, with maximum absorption at 612nm and molar absorptivity being 8.79 x 10(4) L.mol-1.cm-1. Beer's law is obeyed in the range of 0-16 micrograms/25ml for manganese. The molar ratio for Mn-Phen-CTMAB-CAS in the complex is established to be 1:1:4:2. The influence of foreign ions and their elimination have also been studied.
authors.affiliation: China Pharmaceutical University, Nanjing.
authors.forename: L
authors.initials: L
authors.lastname: Wang
authors.forename: G
authors.initials: G
authors.lastname: Cheng
authors.forename: J
authors.initials: J
authors.lastname: Nie
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D008345:Manganese / Q000032:analysis*; D013053:Spectrophotometry / Q000379:methods
chemical_list: D004365:Drugs, Chinese Herbal; D008345:Manganese