Sentence examples for standards substances from inspiring English sources
Standards substances (most of them kindly provided by Asaph Aharoni, Weizmann Institute) were dissolved in 50% methanol (1 mg/ml).
The columns differed widely in their performance with respect to peak shapes and widths for standard substances.
The metabolites detected using GC-TOF/MS were identified by searching against the LECO/Fiehn Metabolomics Library and validated with standard substances if available.
Voltammetric and UV Vis spectroscopic comparisons involving standard substances confirm that all compounds studied, except 4,4′-azobis-[2-hydroxybenzoic acid], are reduced in an overall four-electron process to their corresponding amines.
The standard substances were purchased from Sigma Aldrich.
The retention times were determined using pure standard substances.
Olive oil, oleic acid, and oleyl oleate were used as standard substances for TAG, FA and WE, respectively.
The standard substances of brazilin and protosappanin B were added whose qualities were 80, 100 and 120% test sample.
Further researches of BDE 209 degradation by strain WZN-1 requires using standard substances verify these possible hydroxylation and ring opening products.
