Direct determination of tetraethyllead and tetramethyllead in gasoline by high-performance liquid chromatography with electrochemical detection at mercury electrodes

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

DOI:https://doi.org/10.1021/ac00295a023· OSTI ID:5991645

Bond, A M; McLachlan, N M

Tetramethyllead and tetraethyllead are highly toxic compounds used as antiknock additives in gasoline. In this work, direct injection of 1- to 10-/sup +/L samples of aviation and motor gasolines onto a C/sub 18/ reverse-phase HPLC column followed by electrochemical detection at a mercury electrode with acetonitrile (0.05 M tetraethylammonium perchlorate) as the eluent provides a specific and sensitive method for determination of tetraalkyllead compounds via direct calibration. The redox process at mercury electrodes employed for detection involves oxidation of the electrode and exchange of alkyl groups. This unique reaction occurs at much lower potentials than the direct oxidation at solid electrodes. The complex matrix in gasolines precludes the determination of tetraalkyllead compounds using oxidation at a glassy carbon or other inert solid electrode detectors. 9 references, 4 figures.

• Research Organization: Deaken Univ., Waurn Ponds, Australia
• OSTI ID: 5991645
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:4; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400400 -- Electrochemistry
ACETONITRILE
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
DATA
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
EXPERIMENTAL DATA
FUELS
GASOLINE
INFORMATION
LEAD COMPOUNDS
LIQUID COLUMN CHROMATOGRAPHY
LIQUID FUELS
MERCURY
METALS
NITRILES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANOMETALLIC COMPOUNDS
OXIDATION
PETROLEUM PRODUCTS
QUANTITATIVE CHEMICAL ANALYSIS
REDOX REACTIONS
SEPARATION PROCESSES
TEL