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Displaying 1-5 of 21 results for Tag: Amine
AN317: Extraction of BNAs (Bases, Neutrals, and Acids) Using Accelerated Solvent Extraction (ASE)Instrument Type: Automated Sample Prep
The procedures described in this application note meet the requirements for sample extraction as determined by U.S. EPA Method 3545. This method is applicable to the extraction of water-insoluble or slightly water-soluble volatile and semivolatile compounds in preparation for gas chromatographic or GC/MS measurement. This method is applicable to soils, clays, wastes, and sediments containing 250–12,500 μg/kg of BNA compounds.
AU167: Determination of Tobramycin in Crude and In-Process Production Samples During Manufacturing Using HPAE-IPADInstrument Type: IC
This update describes how tobramycin and its typical impurities can be determined in manufacturing process matrices using the same HPAE-IPAD method described in AN 61. The same method is used to assay tobramycin that is intentionally degraded, demonstrating its suitability as a stability indicating method. An ICS-6000 can be used for this application.
AU160: Determination of N,N-Dimethyl-o-Toluidine andN,N-Diethyl-p-Toluidine in Ethylene Gas SamplesInstrument Type: IC
Amines are found throughout nature and are synthesized for many commercial applications. They are used as pharmaceuticals, anti-corrosive agents, and chemical intermediates, and can indicate food spoilage. IC is an excellent technique for determining amines in a variety of samples, even low concentrations. Here is shown the separationand detection of two such amines: N,N-dimethyl-otoluidine and N,N-diethyl-p-toluidine. These amines are separated on a CS17 column with an MSA gradient and 9% acetonitrile, and are detected by absorbance at 210 nm.
AN269: Identification and Quantification at ppb Levels of Common Cations and Amines by IC-MSInstrument Type: ICMS
The work shown here demonstrates the use of IC-MS for the determination of six commonly found cations and selected amines on an IonPac CS12A-5µm column. Confirmatory information was obtained using full-scan MS spectra showing positively charged cation species and characteristic adduct patterns. Quantification was achieved using selected ion monitoring (SIM) acquisitions for each target analyte.
AN94: Determination of Trace Cations in Concentrated Acids (Sulfuric Acid) Using AutoNeutralization Pretreatment and Ion ChromatographyInstrument Type: IC
The determination of trace cationic contamination in processing acids (phosphoric, sulfuric, hydrofluoric) is important to the electronics industries to minimize corrosion. Here trace cationic contamination is determined in a 24% sulfuric acid sample. The acid sample is automatically neutralized through an electrolytic device, and then retained and concentrated onto a concentrator column. After eluting from the concentrator column, the µg/L cations are determined on an IonPac CS16 column using electrolytically generated MSA eluent and suppressed conductivity detection.