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Black-extraction of trace elements from organometallic-halide extracts for determination by flameless atomic absorption spectrometry

Journal Article · · Anal. Chem.; (United States)
DOI:https://doi.org/10.1021/ac00224a018· OSTI ID:7051816
 [1];
  1. Colorado School of Mines, Golden
+ Show Author Affiliations
The Methyl isobutyl ketone-Amine synerGistic Iodide Complex (MAGIC) extraction system offers the advantage that a large number of trace elements can be rapidly determined with a single sample preparation procedure. However, many of the elements extracted by the MAGIC system form volatile organometallic halide salts when the organic extract is heated in the graphite furnace. High concentrations of some elements such as Cu and Zn extracted by the system from anomalous geological samples produce serious interferences when certain other elements are determined by flameless atomic absorption. Stripping systems have been developed using solutions of HNO/sub 3/, H/sub 2/SO/sub 4/, and CH/sub 3/COOH individually or combined with H/sub 2/O/sub 2/ in order to circumvent these problems. With these systems most of the elements in the organic extract can be sequentially stripped into an aqueous phase. Organometallic volatilization and the most serious interelement interferences, therefore, can be eliminated by stripping with various combinations of reagents in a series of steps.
OSTI ID:
7051816
Journal Information:
Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 53:1; ISSN ANCHA
Country of Publication:
United States
Language:
English

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
400105* -- Separation Procedures
ABSORPTION SPECTROSCOPY
ACETIC ACID
ALKALI METAL COMPOUNDS
ALKANES
AMINES
ANTIMONY
ARSENIC
ASCORBIC ACID
BISMUTH
BROMIDES
BROMINE COMPOUNDS
CADMIUM
CARBOXYLIC ACIDS
CHLORIDES
CHLORINE COMPOUNDS
COPPER
ELEMENTS
EXTRACTION
GALLIUM
GOLD
HALIDES
HALOGEN COMPOUNDS
HEXANE
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROGEN PEROXIDE
INDIUM
INORGANIC ACIDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
KETONES
LEAD
MERCURY
METALS
METHYL ISOBUTYL KETONE
MONOCARBOXYLIC ACIDS
MULTI-ELEMENT SEPARATION
NITRIC ACID
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXYGEN COMPOUNDS
PALLADIUM
PEROXIDES
PHOSPHORS
PLATINUM
PLATINUM METALS
POTASSIUM BROMIDES
POTASSIUM CHLORIDES
POTASSIUM COMPOUNDS
POTASSIUM IODIDES
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
SILVER
SOLVENT EXTRACTION
SPECTROSCOPY
SULFURIC ACID
TELLURIUM
THALLIUM
TIN
TRACE AMOUNTS
TRANSITION ELEMENTS
VITAMINS
ZINC