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Tributyltin analysis in seawater by GC FPD after direct aqueous‐phase ethylation using sodium tetrathylborate
Author(s) -
Michel Pierre,
Averty Bernard
Publication year - 1991
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.590050505
Subject(s) - chemistry , tributyltin , aqueous solution , extraction (chemistry) , reagent , detection limit , tin , aqueous two phase system , seawater , chromatography , sodium , solvent , alkylation , organic chemistry , catalysis , oceanography , geology
Using sodium tetraethylborate as an alkylation reagent, one‐step ethylation and extraction of organotin compounds in seawater was performed directly in the aqueous phase to obtain optimal rection conditions. No further purification or concentration of the extract was required before GC FPD analysis. The detection limit for monobutyl‐dibutyl‐and tributyl‐tin was approximately 0.4 ng dm −3 , which is adequate for any currently know toxicity effect. The linearity range (0–200 ng dm −3 ) was solely dependent on the detector response curve. Compared with the Grignard reaction after extraction in an organic solvent, this new ethylation procedure reduces the number of analytical steps, thus saving time and improving reliability.