Examination of interferences in the stripping voltammetric determination of trimethyllead in seawater by polarography and mercury-199 and lead-207 nuclear magnetic resonance spectrometry

Bond, Alan M.; Bradbury, Julie R.; Hanna, Peter; Howell, G.; Hudson, H.A.; Strother, S.; O'connor, M. J.

doi:10.1021/ac00277a030

Cited by 14 publications

(1 citation statement)

References 31 publications

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“…Determination and speciation of ionic alkyllead species have been done by UV spectrometry (7, 10), differential pulse anodic stripping voltammetry (DPASV) (11)(12)(13), gas chromatography with an electron capture detector (GC-ECD) (14), high-performance liquid chromatography with atomic absorption detection (HPLC-AAS) (15), and GC-AAS after hydride generation (16) or butylation (17)(18)(19)(20). This variety of techniques suggests a search for methods with good sensitivity, ease of operation, and reliability.…”

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Speciation of lead and methyllead ions in water by chromatography/atomic absorption spectrometry after ethylation with sodium tetraethylborate

Rapsomanikis¹,

Donard²,

Weber³

1986

Anal. Chem.

197

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This paper describes a novel method for speciation and determination of Me3Pb+ and Me2Pb2+. The procedure Includes In situ ethylation by sodium tetraethylborate (NaBEt4) In water, purging and trapping of alkyllead molecules, and thermal desorption In an electrically heated quartz AAS furnace. The absolute detection limits of Pb for 50 cm3 are ca. 8.7 pg for Me3Pb+ (0.18 pg/cm3) and ca. 10.5 pg for Me2Pb2+ (0.21 pg/cm3). Major advantages for the technique are avoidance of solvent extraction and sample transfers because ethylation to Me3EtPb and Me2Et2Pb takes place In a closed system. Reaction conditions and apparatus operating parameters were optimized by a Simplex algorithm.

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