General Information

 

CENTC

This microanalysis system was purchased through a supplemental research grant under the auspices of the Center for Enabling New Technologies Through Catalysis (NSF CHE-0650456), a National Science Foundation Phase II Center for Chemical Innovation.During the centerís existence researchers from across North America were brought together to collaboratively address the economic, environmental and national security needs for more efficient, inexpensive and environmentally friendly methods of producing chemicals and fuels from a variety of feedstocks.Through catalysis, CENTC researchers aimed to lower the energy costs to transforming chemicals, to use inexpensive, abundant and nontoxic starting materials, and generate less waste.

 

Equipment

Bullet5†††††††† Microanalyses are determined on a PerkinElmer 2400 Series II Analyzer.

Bullet5†††††††† Sample weights are measured on a PerkinElmer Model AD6000 Autobalance.

Bullet5†††††††† Air-sensitive materials are prepared in a dedicated VAC Atmospheres glovebox loaded with Ar (argon) gas, and then crimp-sealed in special tin capsules with a designated die apparatus.

Bullet5†††††††† Liquids and volatile solids are also crimp-sealed in special tin capsules with a designated die apparatus.

 

Experiments

Bullet5†††††††† Samples are analyzed as is (drying services are not available) for carbon, hydrogen, and nitrogen only.

Bullet5†††††††† The analyzer is calibrated at the beginning of a session.A calibration standard of known composition is used to determine the correct signal/μg ratio per element.

Bullet5†††††††† The calibration is verified prior to and after all sample runs, and at regular intervals during a long series.

Bullet5†††††††† Helium carrier gas (99.998 %) is employed:accuracy is 0.3 % and precision is 0.2 % per element.

Bullet5†††††††† All experiments are performed by a single operator, who alone is authorized to use the equipment.

 

Samples

Bullet5†††††††† A minimum of 2.0 mg of loose solid or liquid is requested for each determination, but at least twice that amount is recommended.Extra sample is requested for fluffy and/or staticky solids and for highly viscous liquid materials.

Bullet5†††††††† Air-sensitive samples must be in vessels that will withstand the expansion forces exerted under external vacuum (~0.01 Torr).Screw cap vials and well-sealed ampules work well; ampules sealed under vacuum are not recommended because of the potential for glass contamination upon opening.

Bullet5†††††††† Samples sent from outside the university are not returned unless prior arrangements are made.

Bullet5†††††††† Each sample must have a unique sample name, which will appear on the report.

Bullet5†††††††† Please only ship samples via FedEx, UPS, or DHL to the address on the submission form.

 

Reports

Bullet5†††††††† The submitter receives via email a standard analysis report (PDF).

Bullet5†††††††† Reports are normally emailed late Friday afternoon or evening.

 

Prices per Determination

(Effective 03/16/2018)

Bullet5†††††††† University of Rochester research projects:$30.

Bullet5†††††††† External research groups from non-profit organizations [BY INVITATION ONLY]:$30 + $15 maintenance fee ($45 total).

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