Isotopic Ratio Mass Spectrometerdelta S Finnigan Mat

Leaf carbon isotope composition δ 13 c leaf was expressed relative to the pee dee belemnite standard vpdb and the analytical precision was 0.

Isotopic ratio mass spectrometerdelta s finnigan mat.

The finnigan mat 251 is a magnetic sector isotopic ratio ms. Browse our complete portfolio below or let one of our experts help you tailor a selection specific to your application and workflow needs. In order to aid you in the selection of replacement parts for your instrument the following part number cross reference chart can be used. The isotopic composition of the samples was measured against a working standard gas.

Scientific instrument services carries a wide selection of parts for all models of thermo finnigan mass spectrometers. Carbon isotope compositions were analyzed with a combined gas chromatography combustion isotope ratio mass spectrometer delta s finnigan mat. δ13c values for compounds with typical abundances of 5 ng are determined routinely. Supplies and service for the mat 253 sector isotopic ratio ms.

The finnigan mat delta s is dedicated to stable carbon isotopic δ13c analyses having been extensively modified to provide high sensitivity. The isotope ratio measurement is calibrated based on repeated measurements of nbs 19 and nbs 18 and precision is 0 10 for d18oand 0 08 for d13c 1sigma. To a gas ratio mass spectrometer finnigan mat 252. Available preconcentrators elemental analyzers gc interfaces lc interfaces and continuous flow inlets.

Isotope ratio mass spectrometers have also helped laboratories in the fields of food and doping analysis providing trustworthy analytical results. Powdered samples were reacted with dehydrated phosphoric acid under vacuum at 70 c. Samples hc2 hc5 and hc8 were too enriched in18otobe 2. The isotopic analyses were conducted using a finnigan continuous flow isotope ratio mass spectrometer delta s finnigan mat bremen germany at the stable isotope facility at inra nancy france.

The finnigan mat 253 stable isotope ratio mass spectrometer system delivers the highest precision for the determination of d h 13c 12c 15n 14n 18o 16o 34s 32s from so2 and sf6 28si 29si as well as ar kr and xe isotope ratios. The gc utilizes a septum equipped programable injector spi and is also fitted with a ctc a200s autosampler. The uncertainties of 3 he 4 he ratio r r atm 4 he 20 ne ratio and helium abundance are 1 10 and 10 respectively. See also mat 252.

Simultaneous mass range up to 25. Contact sis about parts and repair services for the mat 251.