Reference materials for PAHs in foodstuffs: results of a preliminary intercomparison of methods in experienced laboratoriesH. A. M. G. Vaessen, A. S. Lindsey, P. J. Wagstaffe|Fresenius Zeitschrift für Analytische Chemie|1988Cited by 11
Certification of the sulphur content of three rapeseed reference materialsP. J. Wagstaffe, A. S. Lindsey, Achim Boenke et al.|Analytical and Bioanalytical Chemistry|1992Cited by 9
Reference materials for PAHs in foodstuffs: II. Results of a further intercomparison of methods in experienced laboratoriesH. A. M. G. Vaessen, A. S. Lindsey, P. J. Wagstaffe|Analytical and Bioanalytical Chemistry|1990Cited by 9
Production and certification of sulfur in gas oil reference materialsA. S. Lindsey, P. J. Wagstaffe|Analytical Chemistry|1983Cited by 6
Production and certification of ten high-purity polychlorinated biphenyls as reference materialsA. S. Lindsey, P. J. Wagstaffe|The Analyst|1989Cited by 4