Pesticides multiresidue analyses method in cucumber was studied by GC/MS with MID (Multiple IonDetection).
用GC／MS多离子（MID）检测法，探讨了黄瓜中农药多残留分析问题。
2
The Working principle, structure characteristics and iondetection methods of a three-dimensional quadrupole ion trap are described.
介绍了三维四极离子阱的工作原理、结构特点和离子检测方法。
3
The paper detailed the improvement of the modified nephelometry with barium sulfate for the sulfate iondetection in water, basing on condition experiments.