第12楼2004/05/19
应该分有仪器检测限(IDL),方法检测限(MDL)等的分别,下面是收集的一份资料,供大家参考。
What is the difference between DL, IDL, MDL, PQL, etc.? An IDL (Instrument Detection Limit) is the lowest limit that the instrument can detect. It is determined on samples which have not gone through any sample preparation steps. An MDL (Method Detection Limit) is similar to an IDL, but is based on samples which have gone through the entire sample preparation scheme prior to analysis. A PQL (Practical Quantitation Limit) is normally 3 to 10 times the MDL and is considered the lowest concentration that can be accurately measured, as opposed to just detected. DLs are actually determined by analysis of replicate low-level samples or blanks. This information gives the variation in instrument response at levels near the detection limit, from which 99% confidence limits are calculated from the standard deviation.