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Simultaneous determination of cyanide and thiocyanate in

Laboratory Animals” in an AALAS (American Association for Laboratory Animal Science) accredited facility and were approved by the appropriate institutional review boards. Sample preparation Spiked and non-spiked biological samples (100 μL) were added to 2 mL micro-centrifuge vials. Aliquots (100 μL each) of Na13C15N (200 μM) and NaS13C15N

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Derivatization Reagents | Amine | Chromatography

May 06, 2015 · Derivatization for GC. Acetic Anhydride. 2. Add 0.5 mL acetic anhydride and 1 mL of acetic acid. Heat at 50 C for 2-16 hours. 3. Remove excess reagent by evaporating the mixture to dryness and redissolve the residue in chloroform for GC analysis. Alditol Formation 1. Dissolve 5 mg of sample in 5 mL of chloroform. 2. Add 1mL acetic anhydride

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Caffeine | C8H10N4O2 - PubChem

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