A new method was developed for determination of 407 pesticide residues in complex matrix by using LC-MS with triple quadrupole(QQQ).Comparing with regular method,the method has high sensitivity and repeativity,and was...A new method was developed for determination of 407 pesticide residues in complex matrix by using LC-MS with triple quadrupole(QQQ).Comparing with regular method,the method has high sensitivity and repeativity,and was applied for the determination of peticide in real sample with satisfactory results.展开更多
运用高效液相色谱法(HPLC)制备了胡黄连中胡黄连甙Ⅱ的对照品,色谱条件为C18制备柱(300mm×20mmi d ,10μm),流动相为甲醇 水(体积比为1∶1),流速8mL/min,265nm紫外检测,进样量100μL。用HPLC和毛细管区带电泳法(CZE)测定了自制对...运用高效液相色谱法(HPLC)制备了胡黄连中胡黄连甙Ⅱ的对照品,色谱条件为C18制备柱(300mm×20mmi d ,10μm),流动相为甲醇 水(体积比为1∶1),流速8mL/min,265nm紫外检测,进样量100μL。用HPLC和毛细管区带电泳法(CZE)测定了自制对照品的纯度,结果表明,自制对照品的纯度在99.0%以上,稳定性好,且2种方法测定的结果具有可比性。展开更多
文摘A new method was developed for determination of 407 pesticide residues in complex matrix by using LC-MS with triple quadrupole(QQQ).Comparing with regular method,the method has high sensitivity and repeativity,and was applied for the determination of peticide in real sample with satisfactory results.
文摘运用高效液相色谱法(HPLC)制备了胡黄连中胡黄连甙Ⅱ的对照品,色谱条件为C18制备柱(300mm×20mmi d ,10μm),流动相为甲醇 水(体积比为1∶1),流速8mL/min,265nm紫外检测,进样量100μL。用HPLC和毛细管区带电泳法(CZE)测定了自制对照品的纯度,结果表明,自制对照品的纯度在99.0%以上,稳定性好,且2种方法测定的结果具有可比性。
