1 简介 SPSS是Statistical Program for Social Sciences 的简 称,即社会科学统计程序,由美国SPSS公司1970 年代推出,迄今已有近30年的历史。是国际著名 三大社会科学统计软件包之一(SAS、SPSS、 Statis)。我们现在使用的是SPSS for Windows 8.0 版
In recent years, high performance liquid chromatography (HPLC) has grown in popularity as a determinative step for residue analysis, until today it is accepted as complementary to the more traditional gas liquid
Use of any multiresidue method (MRM) is supported by available information about how potential residues behave through the steps of the method. To provide that support for PAM I MRMs, additional chemicals are continually tested through the method steps and the resulting data compiled in a single database. All PAM
1 Codes: C: complete (>80%); P: partial (50-80%); S: small (<50%); V: variable (approximate percentage when known); R: recovered but no quantitative information available; NR: not recovered
N-methylcarbamate insecticide residues, including carbamate metabolites, are extracted with methanol. The extract is cleaned up by partitioning and column chromatography on a charcoal/Celite column. Residues are selectively determined