高效液相色谱法鉴别护发用品的种类

护发用品的检验是目前司法鉴定中经常遇到的问题,因此建立一种简便、灵敏准确的鉴定护发用品的方法是十分必要的。以甲醇为提取剂,在甲醇-0.15%冰乙酸水溶液(70∶30)、检测波长为UV-210nm的色谱条件下,对30种不同产地、不同品牌的护发用品进行HPLC分析,依据护发用品中组分的不同,可将其分为6大类,每类中各个样品又可根据其色谱峰峰面积比的不同进一步进行种类的鉴别。实验结果表明,用该方法鉴别护发用品简便、快速、准确。     

GC/MS分析尿液中的乘晕宁

目的:检验在麻醉抢劫案件中受害人的尿液和血液中麻醉药物成分。方法:通过液-液提取和GC/MS分析。结果:从受害人的尿液中检出乘晕宁成分,血液中未检出。     

A New Process and Technology for Rapid Prototyping of A μ-Micro Motor

A new process and technology of rapid prototyping for a μ-micro motor is presented as a nontraditional machining and an advanced manufacturing technology (AMT) to be realized by using masks, including the operation principle of the motor, structure design, technique, driven circuit, and quality examination with Raman spectrum. The μ-micro motor is fabricated by the micro electro-mechanical systems (MEMS) process, the structure design must be considered to fabricate or assembly the parts during machining the motor in the meantime. The research proved that integration of IC (integrated circuit) process and MEMS using masks is effective in obtaining the rapid prototyping manufacturing of the μ-micro motor. With the mature technique to fabricate the motor, there are advantages to produce the motor in short time and with lower cost than before. The motor is a common power source of micro machines in military and civilian applications, for example, applied to micro robot, micro bio medicine, and micro machine. The size of the motor is 190 μm in maximum diameter by 125 μm in height that is bulk machined in array with the number of hundreds of micro motors on a substrate.