近年来渔病、渔药方面研究成果和渔业生产中病使用药物,不得造成水域污染”的规定;农业部渔业局 害防治工作状况分析结果表明:不同养殖种类,不同个为了规范水产养殖用药也于2000年9月7日以农渔 体规格,不同施药方法,不同养殖环境条件下药物安全养(200017号文件颁布了渔药推荐目录及使用方法的 剂量具有较大差异;使用不同药物间有较严格的配伍通知(农业部渔业局,2000

根据（ ）农借合字第 号借款合同，你单位于 年 月 日向我行（社）借 贷款（大写） 元， 现尚余 元将于 年 月 日到期，请抓紧筹措资金按期归还借 款，如到期未还，我行（社）即依照借款合同有关规定予以处理

市场经济中的蛛网模型 自由贸易市场中常见的现象:我们时常听到,今年的 苹果(陕西)大丰收,按说农民应该很高兴,但是由于价 格很低,农民反而赔钱,于是很多农户砍了苹果树,转 而经营其它农副业,类似的现象还发生在很多农副业 的产品,如鸡,生猪,桔子等消费品上.其大致规律是:一 段时间的上市量远多于需求量,引起价格下降,于是 物贱伤农,生产者发现养殖赔钱,于是转而经营其他 农副业.过了一段时间后,市场上供应量大减,于是因 为供不应求导致价格上涨.生产者又看到养殖有钱可 赚,又重操旧业,这样过一段时间后又会出现供大于 求的局面.如此反复循环

N-methylcarbamate insecticide residues, including carbamate metabolites, are ex￾tracted with methanol. The extract is cleaned up by partitioning and column chromatography on a charcoal/Celite column. Residues are selectively determined

Pesticide multiresidue methods (MRMs) are capable of simultaneously determin￾ing more than one residue in a single analysis; this multiresidue capability is provided by a GLC or HPLC determinative step that separates residues from one another before detection. The MRM concept is raised to a higher dimension when a single extract is examined with more than one chromatographic determinative

The expressed purpose of the Pesticide Analytical Manual is to publish analytical methodology used by the FDA in enforcing pesticide tolerances. To understand FDA’s application of methodology published in the manual, it is important to

Recovery of Chemicals Through Method 401 (E1-E2 + C1 + DL1) (methanol extraction, cleanup with partitioning and charcoal/Celite column, HPLC with post-column derivatization and fluorescence detection)

Caution: Use this table only as a quick reference for tentative identification of residues found in samples analyzed by the most com￾monly used PAM I multiresidue methods. Always compare the residue to a standard chromatographed in your own gas chromatograph

Transmittal No. 96-E1 (9/96) Form FDA 2905a (6/92) INDEX: METHODS–1 Pesticide Analytical Manual Vol. I INDEX: METHODS Index to PAM I Methods, by Chemicals Tested for Recovery Codes: C: complete (recovery); P: partial; S: small; V: variable; R: recovered; NR: not recovered

Multiresidue methodology by definition requires determinative steps capable of separating analytes from one another so each can be detected and measured individually. Both gas-liquid chromatography (GLC) and high performance liquid