Determination of aluminum, copper, iron and lead in glycol formulations by atomic absorption spectroscopy

• Main Author: Not Available
• Language: unknown
• Published: 2022
• Subjects: 14 SOLAR ENERGY; 37 INORGANIC; ORGANIC; PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; ALUMINIUM; ABSORPTION SPECTROSCOPY; CARBON; COPPER; GLYCOLS; QUANTITATIVE CHEMICAL ANALYSIS; IRON; LEAD; CHELATING AGENTS; CORROSION; DEDTC; EMISSION SPECTROSCOPY; HEAT TRANSFER FLUIDS; METHYL ISOBUTYL KETONE; OXINE; ALCOHOLS; AZINES; CARBAMATES; CARBONIC ACID DERIVATIVES; CARBOXYLIC ACID SALTS; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; ELEMENTS; FLUIDS; HETEROCYCLIC COMPOUNDS; HYDROXY COMPOUNDS; KETONES; METALS; NONMETALS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; PYRIDINES; QUINOLINES; SPECTROSCOPY; TRANSITION ELEMENTS; Carbonic acid
• Online Access: http://www.osti.gov/servlets/purl/6876637; https://www.osti.gov/biblio/6876637; https://doi.org/10.2172/6876637

Initial screening tests and the results obtained in developing procedures to determine Al, Cu, Fe, and Pb in glycol formulations are described. Atomic absorption completion was selected for Cu, Fe and Pb, and after comparison with emission spectroscopy, was selected for Al also. Before completion, carbon, iron, and lead are extracted with diethyldithiocarbamate (DDC) into methyl isobutyl ketone (MIBK). Aluminum was also extracted into MIBK using 8-hydroxyquinoline as a chelating agent. As little as 0.02 mg/l carbon and 0.06 mg/l lead or iron may be determined in glycol formulations. As little as 0.3 mg/l aluminum may be determined.