Electrochemical preconcentration of metals using mercury film electrodes followed by electrothermal vaporization into an inductively coupled plasma and determination by atomic emission spectrometry
The production and use of mercury film electrodes for matrix separation and preconcentration of trace metals from biological materials prior to their determination by inductively coupled plasma atomic emission spectrometry (ICP-AES) are described. Separation and preconcentration are achieved by controlled potential electrolysis on mercury-plated, glassy carbon electrodes. Electrodes with trace metal amalgam are transferred to an electrothermal vaporization device, the mercury is removed by evaporation, and the metals are then evaporated and determined simultaneously by ICP-AES. The method is applied to the determination of eight trace elements, Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn, in water solution and in the biological standard reference materials urine and bovine liver. The method precision varied between 3.8 and 8.1%.
- Research Organization:
- Food and Drug Administration, Cincinnati, OH
- OSTI ID:
- 5919748
- Journal Information:
- Anal. Chem.; (United States), Vol. 59:18
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
59 BASIC BIOLOGICAL SCIENCES
CADMIUM
EFFICIENCY
EMISSION SPECTROSCOPY
POTENTIOMETRY
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
CHROMIUM
COBALT
COPPER
ELECTRODES
LEAD
LIVER
MANGANESE
NICKEL
URINE
WATER
ZINC
CATTLE
ELECTROLYSIS
EVAPORATION
EXPERIMENTAL DATA
MERCURY
PLASMA
TRACE AMOUNTS
ANIMALS
BIOLOGICAL MATERIALS
BIOLOGICAL WASTES
BODY
BODY FLUIDS
CHEMICAL ANALYSIS
DATA
DIGESTIVE SYSTEM
DOMESTIC ANIMALS
ELEMENTS
GLANDS
HYDROGEN COMPOUNDS
INFORMATION
LYSIS
MAMMALS
MATERIALS
METALS
NUMERICAL DATA
ORGANS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
RUMINANTS
SPECTROSCOPY
TITRATION
TRANSITION ELEMENTS
VERTEBRATES
WASTES
400105* - Separation Procedures
400102 - Chemical & Spectral Procedures
550200 - Biochemistry