Multielement preconcentration of trace heavy metals in water by coprecipitation and flotation with indium hydroxide for inductively coupled plasma: atomic emission spectrometry

Journal Article · Thu May 01 04:00:00 EDT 1980 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50056a008· OSTI ID:5163048

Hiraide, M; Ito, T; Baba, M; Kawaguchi, H; Mizuike, A

Microgram quantities of Cr(III), Mn(II), Co, Ni, Cu (II), Cd and Pb in 1200-mL samples are quantitatively coprecipitated with indium hydroxide at pH 9.5. After adding ethanolic solutions of sodium oleate and dodecyl sulfate, the precipitates are floated with numerous tiny nitrogen bubbles to the solution surface, and then collected in a small sampling tube. The procedure is simple and rapid, and suitable for operation at sampling spots. The heavy metals in the dissolved precipitates are determined by inductively coupled plasma-atomic emission spectrometry. The concentrations of the heavy metals are increased 240-fold, and those of alkali and alkaline earth metals in artifical seawater are reduced to 1/50 to 1/20 for Na and K, and ca. 1/2 for Mg, Ca, and Sr. 2 figures, 4 tables.

• Research Organization: Nagoya Univ., Japan
• OSTI ID: 5163048
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 52:6; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
400105 -- Separation Procedures
ALKALI METALS
ALKALINE EARTH METALS
CADMIUM
CALCIUM
CHEMICAL ANALYSIS
CHROMIUM
COBALT
COPPER
COPRECIPITATION
ELEMENTS
EMISSION SPECTROSCOPY
FLOTATION
HYDROGEN COMPOUNDS
HYDROXIDES
INDIUM COMPOUNDS
INDIUM HYDROXIDES
LEAD
MAGNESIUM
MANGANESE
METALS
NICKEL
OXYGEN COMPOUNDS
PH VALUE
POTASSIUM
PRECIPITATION
QUANTITATIVE CHEMICAL ANALYSIS
SEAWATER
SEPARATION PROCESSES
SODIUM
SPECTROSCOPY
STRONTIUM
TRACE AMOUNTS
TRANSITION ELEMENTS
WATER