Certification of the mass concentration of three stilbenes in bovine urine reference materials by gas chromatographic—mass spectrometric methods. Sources of error and their control
✍ Scribed by A. Boenke
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 469 KB
- Volume
- 275
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
In order to confirm the presence of residues III various tissue samples, procedures based on gas chromatographymass spectrometry (GC-MS) are the methods of choice The accuracy, repeatablbty and reproducrbdlty of enstmg and/or new GC-MS procedures can be checked by certdied matnx matched reference materials @RMs~ Reference mater& prowde support for the quahty control III reference laboratones and for the quality cntena of restdue analyst However, to anwe. at a c&tied value several objectwes are important such as the ehmmation of various sources of errors This paper ~IKUWZ+ some analyhcal errors detected m the cert&aaon stuq on three stdbenes m bovme urme reference mater& The coeffiaents of vanation for the repeatabtity (wrlthm-laboratory), reproduclbtity (between-laboratory) and for some calibration parameters are compared with those avadable from the hterature A hnk to proficiency schemes for laboratory accredrtatlon and laboratory control purposes 1s also gwen Keywom% Gas chromatography-mass spectrometry, Reference matenals, Sblbenes, Urme