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关于稻瘟灵残留量有什么测试标准?
请大家指教硅镁吸附剂:60~100目,550℃灼烧5h,以5%水减活化,混匀,放置2天以上。用前于130℃烘2h,以5%水减活化,平衡过夜后使用;稻瘟灵标准溶液:准确称取稻瘟灵标准品(纯度≥97.5%),用丙酮配制成1.0mg/mL的标准储备液,冰箱保存。临用时用丙酮稀释成1.0μg/mL的标准使用液。Silicon-magnesium adsorbent: 60-100 mesh, burned at 550℃ for 5 hours, deactivated by 5% water, mixed well, lay aside for at least 2 days, burned at 130℃ for 2 hours before use, deactivated by 5% water, lay aside over night. Isoprothiolane standard sample solution: weigh accurately certain amount of isoprothiolane standard sample (purity not lower than 97.5%), prepare a standard stock solution using acetone, store in refrigeratory. Prepare a standard sample solution with concentration of 1.0 μg/ml using use this stock solution to when test.
本人系一名在校研究生,现需要采购多种农药标准品,用于科研。标准品浓度需在1000PPM以上或者固体,有意者请把标准品价格、浓度、含量,发到myou@xmu.edu.cn 或者mh_you@126.com氯氰菊酯、醚菌酯腈菌唑杀螟腈二甲戊乐灵氟虫腈乙草胺异菌脲氟丙菊酯丙溴磷异丙甲草胺丙环唑三氯杀螨醇ddv乙拌磷四氯间二甲苯氟乐灵甲拌磷乐果二嗪哝百菌清甲基毒死蜱七氯杀螟松马拉硫磷环氧七氯硫丹1丁草胺稻瘟灵异狄氏剂环氟菌胺硫丹2乙硫磷联苯菊酯甲氰菊酯三氯杀螨砜三氟氯氰菊酯氯菊酯氟氯氰菊酯氰戊菊酯溴氰菊酯三唑磷丙线磷敌敌畏甲胺磷异吸硫磷甲拌磷治螟磷内吸磷二嗪哝乙拌磷稻瘟净久效磷乐果甲基毒死蜱甲基对硫磷倍硫磷马拉硫磷杀螟松对硫磷甲基异柳磷喹硫磷稻丰散丙溴磷乙硫磷苯硫磷