Modified gas-liquid separator for the determination of mercury with cold vapor flow injection-inductively coupled plasma optical emission spectrometry

ALTAMIRANO, JORGELINA C.; WUILLOUD, RODOLFO G.; SALONIA, JOSÉ A.; OLSINA, ROBERTO A.; MARTINEZ, LUIS D.

JOURNAL OF ANALYTICAL CHEMISTRY

MAIK

Año: 2002 vol. 57 p. 799 - 801

1061-9348

A phase separator for flow injection (FI) volatile compounds generation combined with inductively coupled plasma optical emission spectrometry (ICP-OES) was developed. The separator was constructed using a glass tube with a minimal dead volume respect to the classical U-tube separator. A peristaltic pump was used to aspirate the drained liquid and control the filling level, improving the reproducibility of the measurements and avoiding turbulence in the ICP. This device is simple and easy to fit to any FI system. The proposed separator was used for the determination of mercury.