5 . detection : the samples were extracted with ethyl ether . the lidocaine in the sample was qualitated by rf and a tlc scanning spectrometry , quantitated by a tlc scanning chromatography and a two points external standard method or a standard curve method 5 、利多卡因检测方法:样品碱化处理后，乙醚提取，薄层扫描检测，根据利多卡因的rf值结合光谱扫描图定性，外标两点法或标准曲线法定量。
In non - destructive x - ray fluorescence analysis with thick target , correction method for difference in fluorescence intensity of elements due to sample shape and different distance to the source detector with yttrium as an outer mark element was studied 摘要在厚靶的非破坏性x射线萤光分析中，以钇做外标元素，研究了不同样品形状及与源、探测器距离不同时，引起接收到元素萤光强度差异的校正方法。
This method is to obtain multi - fungi from water and waster water by methylene chloride fluid - fluid extract nitrogen , and then take the concentration purification to the highly effective liquid phase color spectrometer where it can be detected by the diode matrix detector 摘要用二氯甲烷液液萃取氮吹浓缩法萃取水和废水中的多菌灵，取浓缩纯化后的有机相直接进样到高效液相色谱仪，用二极管矩阵检测器检测，根据保留时间外标法定量。
