Ringversuch zur Arsenbestimmung in Urin

Abstract

A report on an interlaboratory survey on arsenic in urine is presented. The arsenic concentrations in the control specimens (synthetic urine) have been determined before as assigned values, and are independent from the survey. To determine these assigned values, preferentially qualified reference laboratories were selected. 46 laboratories in the F.R.G. participated in the survey; the analytical method used was atomic absorption spectrometry. The results arc discussed under statistical viewpoints and conclusions arc drawn for subsequent work in this area.

Keywords

• Urin
• Arsenic
• Rink test

References

1. Stamm, D. (1974) Einfiihrung der QualitiilskontTOlle fur die quantitativen klinischchemischen Untersuchungen in der Bundesrepublik. Mittlg. Dtsch. Ges. IGin. Chern. 5, 65 - 78.
2. Stamm, D. (1980) Die Me Bsicherheit bei quantitativen klinisch - chemischen Untersuchungen. FTB - Mittlg. 90, 134 - 146.
3. Stamm, D. (1979) Reference materials and reference methods in clinical chemistry. J. Clin. Chern. Clin. Biochcm. 17, 283 - 297.
4. Hansert, E., Stamm, D. (J 980) Determinaton of assigned values in control specimens for internal accuracy control and for interlaboratory surveys. J. Clin. Chern. Clin. Biochem. 18, 461 - 490.
5. Stamm, D. (1971) Ringversuche III der klinischen Chemie. Schweiz. Med. Wochenschr. 101, 429 - 437.
6. de Zeeuw, R.A. (1984) personliche Mitteilung uber eine «Exploratory Study III the Field of Systemaiic Toxicological Analysis».
7. Geldmacher - von Mallinckrodt, M., Stamm, D., Enders, P. (1984) Interlaboratory survey on thallium in urine. Z. Rechtsmed. 93, 219 - 225.