英语翻译是这句话下面的几个小段:Some of the philosophical concepts which fro
英语翻译
是这句话下面的几个小段:Some of the philosophical concepts which from the bases for environmental analyses are as follows.
1.Authenticity.Whatever the infomation being sought,it is vitally important to obtain an authentic sample which represents the particular system being investigated.In fact,the ability to obtain an authentic sample is probably one of the most difficult aspects of any environmenatal analysis due to the considerable complexity and heterogeneity of most environmental systems.
2.Detection limits.A statement of the detection limits which can be attained by the analytical method being employed must always be included in providing the results of any environmental analysis.This is because considerable confusion exists about the meaning of a "zero" level of concentration.In fact,it is probably never possible to state that none of the atoms or molecules of the species in question are present so that no true zero exists.