Erratum to: Anal Bioanal Chem

DOI 10.1007/s00216-011-5579-x

Unfortunately the following paragraph was missing in the published article:

This work was supported by grants from the National Institute of Environmental Health Sciences, Superfund Research Program (grant nos. P42 ES007373-17, NIEHS P20ES01817-02 and EPA RD-83459901-1) to T.P. and M.L.G. and also from the Department of Energy Office of Basic Energy Sciences (grant no. DE-FG02-06ER15809) to M.L.G.