Determination of diethyl dithiophosphate in flotation liquors by solvent extraction and ultraviolet spectrometry

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00121a053· OSTI ID:5569750

Jones, M H; Woodcock, J T

Diethyl dithiophosphate, (C/sub 2/H/sub 5/O)/sub 2/PSS/sup -/ (DTP) (diethyl phosphorodithioate), is one of a series of homologous compounds used as flotation collectors for sulfide minerals. Diethyl dithiophosphate can be determined by UV spectrometry at 293 nm in a chloroform extract of the Pb(DTP)/sub 2/ salt. At pH 4-5 virtually 100% of the Pb(DTP)/sub 2/ is extracted from the aqueous phase at 1:1 phase ratio after addition of lead perchlorate to the sample. The absorbance of the chloroform extract is directly proportional to the DTP concentration up to at least 60 mg/L Pb(DTP)/sub 2/ (40 mg/L DTP). Modifications of the simple extraction are provided to overcome interference due to sulfate or cresylic acid. The lower limit of detection is 0.4 mg/L DTP.

• Research Organization: CSIRO, Port Melbourne, Australia
• OSTI ID: 5569750
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:8; 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
ABSORPTION SPECTROSCOPY
CHEMICAL ANALYSIS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
DATA
EXPERIMENTAL DATA
EXTRACTION
HALOGENATED ALIPHATIC HYDROCARBONS
INFORMATION
LIQUID WASTES
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PH VALUE
PHOSPHATES
PHOSPHORUS COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SORPTIVE PROPERTIES
SPECTRA
SPECTROSCOPY
SURFACE PROPERTIES
TRACE AMOUNTS
ULTRAVIOLET SPECTRA
WASTES