Abstract
Specific and sensitive detection or precise quantification of xenobiotics in biosamples (e.g. blood, urine, saliva, sweat, hair) are great challenges in analytical toxicology. GC-MS is the most sensitive, specific and universal analytical method for low mass xenobiotics. Precise quantification can be performed using the selected ion mode (SIM) and stable isotopes as internal standards. Negative chemical ionization (NCI) can improve several fold the sensitivity for the determination of compounds with electronegative sites (e.g. halogens). For screening and identification of most of the basic and neutral drugs (e.g. drugs of abuse, psychotropics, hypnotics, analgesics, cardiacs) in urine, a systematic toxicological analysis procedure (STA) was developed using GC-MS after acid hydrolysis, extraction and acetylation. For detection of acidic xenobiotics (e.g. anticoagulants, ACE inhibitors, diuretics, antirheumatics) in urine, a further GC-MS procedure was developed using extractive alkylation. For the detection of non-volatile xenobiotics (e.g. toxic peptides like α- and ß-amanitin or phase II metabolites) electrospray LC-MS procedures were developed. The procedures and examples show that in analytical toxicology GC-MS is the method of choice for low mass xenobiotics while LC-MS is that for non-volatiles.
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Dedicated to Prof. Dr. R. Klaus Müller, Leipzig, on the occasion of his 60th birthday
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© 1997 Springer-Verlag Berlin Heidelberg
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Maurer, H.H., Arlt, J.W., Kraemer, T., Schmitt, C.J., Weber, A.A. (1997). Analytical Development for Low Molecular Weight Xenobiotic Compounds1 . In: Seiler, J.P., Vilanova, E. (eds) Applied Toxicology: Approaches Through Basic Science. Archives of Toxicology, vol 19. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60682-3_17
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DOI: https://doi.org/10.1007/978-3-642-60682-3_17
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