Liquid Chromatograph (Agilent HPLC 1200 series) coupled to a Tandem Mass Spectrometer (Aigilent 6410B LC MS/MS) and Liquid Chromatograph IonTrap (Agilent/Bruker 1300 LC MSn). Both instruments were awarded through a NSF MRI grant of the Chemistry Division. The LC MS/MS is use to quantify an array of organic and inorganic compounds including: pharmaceuticals, nicotine and cotinine, herbicides, triazoles, phthalates and perchlorates in different matrixes. The instrument consists of two quadrupole and one collision cell and is suitable for ultralow level quantification where initial mass and two characteristic mass fragments are recorded. The Ion Trap with its n-time fragmentation capillary is used to identify compounds such as phospholipids and proteins.
Varian GC-MS/MS systems that allow qualitative a
nd quantitative analysis of volatile or extractable organic compounds up to a molecular weight of about 400 amu. Compounds extracted or purged from samples such as water, soil, and tissues will be analyzed by these fully automated instruments. Presently these instruments are being used for analysis of disinfection byproducts (e.g. total trihalomethanes and haloacetic acids) in treated water, persistent organic pollutants, and fatty acids present in tissue and human plasma.
Agilent ICP-MS 7500c with reaction cell system for analyzing metals in water, soils, and tissues. This instrument can quantify a large array of metals in the parts per billion to the parts per million range in a matter of minutes. The reaction cell allows measurements of light elements. Presently this instrument is being used for trace metal analysis in soils, groundwater, surface water, plant and animal tissue and for arsenic contaminated drinking water. This instrument can also be linked with a high-pressure liquid chromatograph to carry out metal speciation studies.
Dionex Ion Chromatograph for quantitative analysis of anions and cations in water, soil, and tissue. It has been used to measure acetate ion concentrations in bog waters and perchlorate ion from air deposition samples collected during the latest Kodiak rocket launch and how perchlorate affects Threespine Sticklebacks. The IC can be connected to the triple quadrupole system to analyze low concentration of perchlorate and nitrate at very low concentrations such as in glacial water.
Total Carbon and Nitrogen Analyzer (Shimadzu TOC-VCHN) to analyze organic and inorganic carbon (OC, IC) and total nitrogen (TN) in water using combustion at 680º C (OC) and phosphoric acid digest (IC) respectively. High sensitivity mode allows analyzing down to 50 ppb TOC.
Agilent Gaschromatographs (5890, 6850 seriesII, 6890, 7890A) These instruments are equipped with an array of detectors such as FID, ECD, and 5873 MS and can be connected to purge and trap and headspace autosampler. They are used for a variety of analysis including fatty acid methyl ester (FAME), PCBs, Pesticides, BTEX, and P.I.A.N.O.
Dionex Accelerated Solvent Extraction Systems (ASE) (ASE200 and ASE350) that enhance sample preparation. This automated system provides faster extractions of both major constituents and trace contaminates found in tissue and soil samples. Typical methods run on the ASE require 10 times less solvent than classical methods and can be completed much more quickly.
Microwave Digestion System (Milestone ETHOZ EZ) This digestion system is equipped with Teflon vessels and uses automated temperature and pressure programes for digestion. It is used for total digestion and extractions of rock, tissue and plant material.