caa a22 4500 465749186 CHVBK 20180323111829.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00322535 doi (NATIONALLICENCE)springer-10.1007/BF00322535 Many years of experiences in internal quality control in the toxicological analysis of biological material in the field of occupational medicine [Elektronische Daten] [K. Schaller, J. Angerer, G. Lehnert] Summary: Toxicological analysis in blood and urine for biological monitoring of occupationally exposed persons must be carried out in the Federal Republic of Germany under an internal and external quality control scheme. The results of many years of experiences with 5 commercially available control specimens (1 blood, 1 serum, 3 urine samples) from three companies for internal quality assurance are presented. Precision and accuracy were evaluated by comparison of our results with the data of the initial period (within day precision of the methods) and the assigned values. Over years the commercially available control specimens show good comparable results. Except in a few cases, there was a good agreement between our results and the assigned values. An expected worldwide increase of the importance of biological monitoring makes the availability of control specimens for everyday use a prerequisite in effective internal quality control. This is especially valid for the determination of organic compounds, e.g. solvents and pesticides in blood and urine samples. Springer-Verlag, 1990 Schaller K. Institut für Arbeits- und Sozialmedizin und Poliklinik für Berufskrankheiten, Universität Erlangen-Nürnberg, Schillerstrasse 25/29, D-8520, Erlangen, Federal Republic of Germany aut Angerer J. Institut für Arbeits- und Sozialmedizin und Poliklinik für Berufskrankheiten, Universität Erlangen-Nürnberg, Schillerstrasse 25/29, D-8520, Erlangen, Federal Republic of Germany aut Lehnert G. Institut für Arbeits- und Sozialmedizin und Poliklinik für Berufskrankheiten, Universität Erlangen-Nürnberg, Schillerstrasse 25/29, D-8520, Erlangen, Federal Republic of Germany aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/4(1990-01-01), 547-550 0937-0633 338:4<547 1990 338 216 https://doi.org/10.1007/BF00322535 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00322535 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Schaller K. Institut für Arbeits- und Sozialmedizin und Poliklinik für Berufskrankheiten, Universität Erlangen-Nürnberg, Schillerstrasse 25/29, D-8520, Erlangen, Federal Republic of Germany aut NATIONALLICENCE 700 1- Angerer J. Institut für Arbeits- und Sozialmedizin und Poliklinik für Berufskrankheiten, Universität Erlangen-Nürnberg, Schillerstrasse 25/29, D-8520, Erlangen, Federal Republic of Germany aut NATIONALLICENCE 700 1- Lehnert G. Institut für Arbeits- und Sozialmedizin und Poliklinik für Berufskrankheiten, Universität Erlangen-Nürnberg, Schillerstrasse 25/29, D-8520, Erlangen, Federal Republic of Germany aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/4(1990-01-01), 547-550 0937-0633 338:4<547 1990 338 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer