McGarvey B D, Chiba M, Olthof T H
J Assoc Off Anal Chem. 1985 Jul-Aug;68(4):753-6.
A simple and efficient method is presented for the extraction, cleanup, and liquid chromatographic (LC) determination of oxamyl residues in potato tubers. Samples are extracted with methanol, partitioned into dichloromethane, and cleaned up using Sep-Pak Florisil cartridges. LC determination is performed using a Zorbax PSM 60 size exclusion column with an acetonitrile-water (1 + 9) mobile phase and UV detection at 254 nm. Recovery of oxamyl from spiked control tubers averaged 94.1 and 85.9% at fortification levels of 0.4 and 0.08 micrograms oxamyl/g tuber, respectively. The minimum detectable concentration of oxamyl by this method is 0.01 micrograms/g.
本文介绍了一种简单有效的方法，用于提取、净化和液相色谱（LC）测定马铃薯块茎中的杀螟丹残留量。样品用甲醇提取，分配至二氯甲烷中，并用Sep-Pak弗罗里硅土柱净化。使用Zorbax PSM 60尺寸排阻柱，以乙腈-水（1 + 9）为流动相，在254 nm处进行紫外检测，进行LC测定。在添加水平为0.4和0.08微克杀螟丹/克块茎时，加标对照块茎中杀螟丹的回收率分别平均为94.1%和85.9%。该方法测定杀螟丹的最低检测浓度为0.01微克/克。
