雾非雾
第5楼2010/08/05
论坛里的相关链接如下:
日本厚生劳动省-食品中残留农药兽药饲料添加剂检测方法
出自:【求助】-日本厚生劳动省-食品中农用化学品残留检测方法 2楼
http://www.instrument.com.cn/bbs/shtml/20060609/454290/
“日本食品中农业化学品残留检测方法”
http://www.instrument.com.cn/bbs/download.asp?ID=16309
出自:【求助】大豆的前处理方法 3楼
http://www.instrument.com.cn/bbs/shtml/20090318/1791998/
日本食品中农业化学品残留检测方法
http://www.instrument.com.cn/bbs/shtml/20060406/384588/
kekemi
第9楼2010/08/06
不过没有吡嘧磺隆这个产品农药的残留分析,但还是很感谢!
雾非雾
第11楼2010/08/06
Determination and Quantitation of Ten Sulfonylurea Herbicides in Soil Samples Using Liquid Chromatography with Electrospray Ionization Mass Spectrometric Detection
Abstract
A multiresidue method was developed for confirmation and quantitation of ten sulfonylurea herbicides including nicosulfuron, thifensulfuron-methyl, metsulfuron-methyl, sulfometuron-methyl, chlorsulfuron, ethametsulfuron-methyl, tribenuron, bensulfuron-methyl, pyrazosulfuron-ethyl, and chlorimuron-ethyl in soil. Analytes were extracted from the soil sample with methanol-phosphate buffer (2:8, v/v) (pH 7.8) in an ultrasonic bath. The extracts were adjusted to pH 2.5 with 85% H3PO4 and passed, under vacuum, through a solid-phase extraction cartridge. Several types of adsorbents were evaluated, including silica-based Cleanert C18 and two polymeric adsorbents (Oasis HLB and Cleanert HXN). Cleanert C18 showed good cleanup effects in the study. Determination and quantitation were performed by high performance liquid chromatography-electrospray ionization mass spectrometry (LC-ESI-MS) instrumentation equipped with an ion trap mass filter. Analytes were eluted on a HPLC column of 4.6 mm × 250 mm XDB C18, 5 × particle size, in the mobile phase of the acetonitrile (solvent A)-methanol (solvent B)-0.2% acetic acid (solvent C). The elution gradient was as follows: the mobile phase started with 10% of acetonitrile and 10% methanol, which increased linearly to 45% in 14 min, to 48% in the next 2 min and then returned to the initial condition in 2 min. The column temperature was kept at 30°C with a flow rate of 1.0 ml/min. Thus the retention time of nine herbicides was in the range of 10 to 16 minutes. Spiked soil at 0.01–1.0 mg/kg levels was checked. Average recoveries were in the range of 80.2%–104.5% with relative standard deviations (RSDs) of 0.02%–14.90%. The limit of detection (LOD) of this method was in the range of 0.6 to 3.5 μg/kg.
此文章需要花钱购买。
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B82YT-4NRMT49-1&_user=10&_coverDate=09%2F30%2F2006&_rdoc=1&_fmt=high&_orig=search&_sort=d&_docanchor=&view=c&_searchStrId=1423173671&_rerunOrigin=google&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=fd06001ebbf6074aef53c558413051fb