title: New determination methods of halides and cyanide ions by electrospray ionization mass spectrometry based on ternary complex formation.
abstract: Determination methods of halide ions (X(-) = F(-), Cl(-), Br(-) and I(-)) by electrospray ionization mass spectrometry (ESIMS) were developed, where negative ions of the ternary complexes of group-13 elements, nitrilotriacetic acid (NTA), and halides were measured. In particular, these halides were simultaneously determined by measuring [InX(nta)](-), and the limits of detection (LODs) were 1.1 µmol dm(-3) for F(-), 0.32 µmol dm(-3) for Cl(-), 3.8 nmol dm(-3) for Br(-), and 1.6 nmol dm(-3) for I(-), respectively. This approach was extended to the determination of CN(-), where the ternary complex of Cu(II), CN(-) and 4-(2-pyridylazo)resorcinol (PAR), i.e., [(63)Cu(II)(CN)(par)](-) (m/z 302) was measured. The LOD for CN(-) was 20 nmol dm(-3).
authors: Department of Chemistry, Nara University of Education, Takabatake, Nara 630-8528, Japan. hotta@nara-edu.ac.jp
authors: Hiroki
authors: H
authors: Hotta
authors: Shota
authors: S
authors: Kurihara
authors: Keita
authors: K
authors: Johno
authors: Masaomi
authors: M
authors: Kitazume
authors: Kiichi
authors: K
authors: Sato
authors: Kin-Ichi
authors: K
authors: Tsunoda