Global ETD Search
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Showing 1 to 5 of 5 for “"BSTFA"”.
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Rutschige Oberflächen von karnivoren Kannenpflanzen (Nepenthaceae) : Physikalisch-chemische Eigenschaften und mikroskopische Struktur epikutikulärer Wachskristalle von Nepenthes alata, N. albomarginata und N. intermedia
… mit N,O-Bis(trimethylsilyl)trifluoracetamid (BSTFA) in die entsprechenden Trimethylsilyl-Ether bzw. -Ester überführt. Dabei können jedoch auch unerwünschten Nebenreaktionen carbonyl-haltiger Verbindungen auftreten, die eine quantitative Analyse der ursprünglichen Komponenten erschweren. Im …
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Development of a GC-MS method and analysis of phenolic acids in fruit and spice matrices and evaluation of their antioxidant capacity
… were derivatized prior to GC-MS analysis using BSTFA and pyridine (4:1 V/V). Resolution and quantification of all compounds were excellent with linear calibration curves over a wide range (0-500 ng/ml) and correlation coefficient (R2) of 0.999. Relative standard deviation (RSD) and response …
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Forensic sample analysis using supercritical fluid extraction coupled with solid phase microextraction
… with the addition of a derivatization reagent (BSTFA) gave the best results using the coupled technique. After optimisation and validation, the extraction from both real and spiked samples resulted in recoveries between 60% to 80% for the target analytes A<sup>9</sup>-tetrahydrocannabinol …
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Development of a GC-MS method to determine toxic alcohols and their metabolites in postmortem blood
… of N,O-bis-(trimethylsilyl) trifluoroacetamide (BSTFA) and post-mortem whole blood rather than plasma. The method was characterised according to parameters of calibration model, limit of detection, limit of quantification, bias, precision, processed sample stability, and carryover. Linearity was …
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The Potential of Bulk and Amino-Acid Specific Isotope Ratio Mass Spectrometry of Human Hair in Forensic and Clinical Applications
… of N,O-bis(trimethylsilyl) trifluoroacetamide (BSTFA) as a derivatizing agent, we were able to separate and analyze ten of the more abundant amino acids in human hair. EA-IRMS was used to analyze bulk isotope ratio of d13C, d15N and d34S values of human hair. Finally, we have applied LC-IRMS to …