Neff A W, Thomas R W
J Assoc Off Anal Chem. 1978 Sep;61(5):1107-12.
A microbiological assay for determining lincomycin in swine feed, supplement, and a vitamin-mineral premix was studied collaboratively in 16 laboratories. The design of the study involved a complete feed, feed supplement, and a vitamin-mineral premix covering a range of fortification from 20 to 80 g/ton and 80 to 2600 g/ton. Two methods of sample preparation were used depending on the concentration of lincomycin in the sample. Statistical evaluation of the results from the 2 methods indicated that 10 and 11 collaborators, respectively, had mean recoveries which were not significantly different from one another. Ten laboratories obtained a mean recovery of 112.2% (range 102.3--123.5%) for the lower level, and 11 laboratories obtained a mean recovery of 104.4% (range 100.0--107.7%) for the higher level. The method has been adopted as official first action.
16个实验室合作研究了一种用于测定猪饲料、饲料添加剂和维生素 - 矿物质预混料中林可霉素的微生物测定法。该研究的设计涉及一种全价饲料、饲料添加剂和一种维生素 - 矿物质预混料，其强化范围为20至80克/吨和80至2600克/吨。根据样品中林可霉素的浓度，使用了两种样品制备方法。对这两种方法的结果进行的统计评估表明，分别有10名和11名合作者的平均回收率彼此之间无显著差异。10个实验室对较低水平的平均回收率为112.2%（范围102.3 - 123.5%），11个实验室对较高水平的平均回收率为104.4%（范围100.0 - 107.7%）。该方法已被采用为官方首次行动方法。
