Method development cont

The recoveries of clomeprop and its metabolite DMPA in soil after extraction with acetonitrile-water (4 1, v/v) by HPLC/UV (234 nm) are >90% The recoveries of propanil and its metabolite, 3,4-dichloroaniline, in soil are 95 and 76%, respectively, by Soxhlet extraction and LC/PAD determination. Diflufenican is added to soil in the range 0.002-0.008 mg kg to validate the method developed by Conte et al. The average recovery from the soil by this method is 92 5%. 

LOPEZ-CERVANTES J, SANCHEZ-MACHADO DL, PASTORELLI S, RIJK R and PASEIRO LOSADA P, Evaluating the migration of ingredients from active packaging and development of dedicated methods a study of two iron-based oxygen absorbers, Food Additives Cont. 2003, 20(3), 291-299. 

Soil organic matter is a case where good quantitation methods have been developed for CP/MAS experiments. Comprehensive reviews of the state of the art regarding this subject were given by Preston [27] and by Conte et al. [55]. Usually these materials show reasonable H/C atomic ratios (in many cases >1), which is a positive indication for the success of CP process. The group of Smemik and collaborators, for example, showed in a detailed way how the analysis of the H- C... 

TABLE 3 Data Review for the Main Natural Active Substances Used as Biopesticides for Which Developed Analytic Methods were Properly Validated —Cont d ... 

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