The ASU employs an array of different analytical methods. We also develop analytical methodology for new tests or specific research needs. We often do this in conjunction with assisting in the development research projects in areas other than analytical chemistry. Some of the methods we use are detailed below:
- BTEX (benzene, toluene, ethyl benzene and xylenes): purge and trap separation with subsequent GC/FID or GC/MS analysis
- Conductivity: concentration of total ions using a conductivity meter.
- Loss on ignition: procedure using a muffle furnace. Used to calculate % organic matter.
- Leachates: Regulation 558 for determining whether a sample is acceptable at a landfill site or is classified as a hazardous substance. Metals by ICP; semivolatiles and volatiles by GC/MS and pesticides by GC/ECD.
- Nitrate and nitrite: by ion chromatography (IC).
- Metals by ICP-OES or ICP-MS. Nitric/hydrochloric acid digestion, metal volatilization by plasma followed by optical or mass spectrometer analysis.
- Metals by XRF or NAA: generally minimal sample preparation required.
- Oil and Grease: soxhlet extraction followed by gravimetric analysis.
- PCBs or pesticides in oil, water, plants, tissue or soil: separation into an organic solvent using a soxhlet extractor or shaking in an extraction vessel followed by cleanup and GC/ECD analysis.
- Total petroleum hydrocarbon (TPH): sonication with hexane as extractant followed by GC/FID analysis.
- CCME TPH separation into 4 fractions for the Canada wide standard.
The methods listed above are a small selection of what the ASU has to offer. The extensive instrumentation owned by the ASU and other equipment available to us at the University enables us to tailor many of our methods to meet specific client demands and develop new ones. Please see the contact section to inquire about other analytical requirements.