12 Pyrethroid Insecticide Mix Solution in Acetone, 100μg/mL
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10 Pyrethroid Insecticide Mix Solution-2 in Acetone, 100μg/mL
1ST27160-100B | 1mL
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12 Organophosphate Insecticide Mix Solution in Acetone, 100μg/mL
1ST023480-100B | 1mL
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12 Organophosphate Insecticides Mix Solution in Acetone, 100μg/mL
1ST27303-100B | 1mL
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9 Pyrethroid Insecticide Mix Solution in Acetone/Hexane, 500μg/mL
1ST29320-500BH | 1mL
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9 Pyrethroid Insecticide Mix Solution in Hexane/Acetone,500μg/mL
1ST29320-500HB | 1mL
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8 Pyrethroid Insecticide Mix Solution in Acetonitrile, 100μg/mL
1ST023464-100A | 1mL
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19 Pyrethroid Insecticide Mix Solution in Acetonitrile, 100μg/mL
1ST022932-100A | 1mL
您正在浏览的产品:丙酮中12种拟除虫菊酯杀虫剂混标溶液(IFSC 03-11-01-2021-C),100μg/mL
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2. 净化:PSA吸附剂净化
3. 仪器:GC-MS/MS检测(电子轰击离子源)
4. 定量:外标法(使用您提供的混标溶液建立标准曲线)
• 蔬菜水果:0.01 mg/kg
• 谷物:0.02 mg/kg
检出限(LOD)为定量限的1/3-1/2
2. 加标回收率控制范围:70%-120%
3. 标准曲线相关系数R²≥0.99
4. 每20个样品插入1个质控样(加标浓度0.01-0.1mg/kg)
2. 净化:提取液+PSA/MgSO₄吸附剂离心净化
3. 浓缩:取5mL上清液氮吹至近干,丙酮定容至1mL(需与混标溶剂一致)
4. 上机分析:GC-MS/MS条件:
- 色谱柱:DB-5MS (30m×0.25mm×0.25μm)
- 程序升温:80℃(1min)→20℃/min→300℃(5min)
- 监测模式:MRM多反应监测
2. 拟除虫菊酯易吸附在玻璃器皿,需硅烷化处理进样瓶
3. 标准溶液配制需用聚四氟乙烯移液器吸头
4. 质谱调谐需满足m/z 219离子丰度>10%基准要求
以上信息仅供参考,请以相应标准的原文为准!