title: Speciation of chromium by coupled column HPLC-ICP-MS - the effects of interfering ions.
abstract: ICP-MS is used as an element selective detector for chromium species in aquatic samples using a coupled columm system consisting of a cation guard column and an anion column. The effects of large concentrations of disturbing ions, like NO(3)(-), Cl(-), CO(3)(2-) and SO(4)(2-), are discussed and the comparison with the use of different chromium isotopes for data acquisition is given. Quite low concentrations such as 100 mg/l of CO(3)(2-), 10 mg/l Cl(-) and even 5 mg/l SO(4)(2-) can cause an overestimation of chromium if not properly resolved1995 / Accepted: 24 October 1995
authors.affiliation: Lahti Control and Research Laboratory, Niemenkatu 73 C, FIN-15210, Lahti, Finland.
authors.forename: M
authors.initials: M
authors.lastname: Pantsar-Kallio
authors.forename: P K
authors.initials: PK
authors.lastname: Manninen