Sökning: "Margareta Sandahl"

Hittade 2 avhandlingar innehållade orden Margareta Sandahl.

1. 1. Surface Sampling and Automated Liquid Membrane Extraction of Fungicides

   Författare :Margareta Sandahl; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; natural water analysis; microporous membrane liquid-liquid extraction MMLLE ; supported liquid membrane SLM extraction; Dislodgeable fungicide residues; surface sampling; automated sample preparation for HPLC; Analytical chemistry; Analytisk kemi;

   Sammanfattning : A number of approaches for fungicide determination are presented. A surface sampling technique is utilised for the determination of fungicide foliar residues on greenhouse surfaces, mainly leaves. The procedure is based on solvation of the fungicides on the leaf surface with ethanol and HPLC analysis. LÄS MER

3. 2. Sample preparation and analysis of metabolites from plants in the families of Cyperaceae, Poaceae and Apiaceae

   Författare :Linus Svenberg; Åsa Emmer; Jenny Lindh; Margareta Sandahl; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Gas chromatography; Mass spectrometry; Ultrasound assisted extraction; Solid-phase microextraction; Volatile compounds; Allelopathy; Bioassay; Gaskromatografi; Masspektrometri; Ultraljudsassisterad extraktion; fastfas-mikroextraktion; Flyktiga ämnen; Allelopati; Bioanalys; Kemi; Chemistry;

   Sammanfattning : An important aspect of understanding how plants effect their environmentis the study of volatile compounds and how these influence interactions between plants and other living organisms. The study of these secondary metabolites from plants can be used in practical applications, such as behaviour control of insects, and is an important part in the search for novel compounds that can be used to influence the behaviour of disease spreading vectors. LÄS MER