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

Journal Article · Thu Jan 01 00:00:00 EST 1981 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00224a018· OSTI ID:7051816

Clark, J R ^[1]; Viets, J G

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1. Colorado School of Mines, Golden

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), Vol. 53:1
• Country of Publication: United States
• Language: English

Related Subjects

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