文章基本信息

标题：Determination of thyreostats in bovine urine and thyroid glands by HPLC-MSMS
本地全文：下载
作者：Giuseppe Federico Labella ; Luca Maria Chiesa ; Elisa Pasquale 等
期刊名称：International Journal of Health, Animal Science and Food Safety
印刷版ISSN：2283-3927
出版年度：2015
卷号：2
期号：1s
DOI：10.13130/2283-3927/5001
语种：English
出版社：Department of Health, Animal Science and Food Safety (VESPA)
摘要：Thyreostats are orally active substances used in medicine and veterinary work to regulate the production of T3 and T4 hormones by the thyroid gland. They can be illicitly administered to livestock for fattening purposes in order to improve body-weight gain due to an important retention water in edible tissues and in the gastroenteric tract. Their fraudulent utilisation is severely prohibited by the European Union, which requires a precise monitoring. In 2007, European Union of Reference Laboratories in the CRL Guidance paper proposed a recommended concentration of 10 ng mL-1 in urine, which has just been suggested to increase to 30 ng mL -1 . In order to facilitate the detection of thyreostats in two bovine matrices, urine and thyroid glands, a method was developed without a previous derivatisation step, frequently used for HPLC analysis of Thiouracil. A salting-out assisted liquid–liquid extraction procedure for preparation was carried out to facilitate the movement of the thyreostats to the tert buthyl methyl ether phase. The HPLC-MS/MS analytical procedure of the method was validated according to the guidelines of Commission Decision 2002/657/EC and has permitted to obtain satisfactory performance parameters and, decision limit and detection capability values for all the thyreostats lower than the recommended values hitherto mentioned.
关键词：thyreostats;urine;thyroid gland;HPLC-MS