Environmental Analysis Facility

Products and Instruments

EAF Laboratory capabilities include: 1) sample preparation; 2) carbon analysis and organic speciation; 3) sample archiving and storage; 4) gravimetric and light transmission; 5) elemental and microscopic measurements; 6) wet chemistry; 7) particle resuspension; and 8) PM field sampling.

Relevant instrumentation for each laboratory within EAF is listed as follows:

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Sample Preparation Laboratory

Five Pure Air Corporation eight-foot laminar flow hoods (Canoga Park, CA)
Lindberg 51894 Moldatherm box furnace (Watertown, WI)
Two Millipore distilled-deionized water systems capable of producing 100 gallons per day (Billerica, MA)
Two Branson Model 5200 sonicators (Danbury, CT)
VWR Model 1410 vacuum oven (Brisbane, CA)
Cole-Parmer Model 51401-00 sample shaker (Vernon Hills, IL)
Cole-Parmer Model 05053-10 vacuum oven (Vernon Hills, IL)
CEM Mars 5 Laboratory microwave (Matthews, NC)
Environmental Express hot block digestor (Ventura, CA)
Two Hamilton Model 500 Digital Dilutors (Reno, NV)
Dynac 0101 centrifuge (Parsippany, NJ)
Brinkmann Buchi Safety VAP R-200 rotavapor system (Westbury, NY)
Eight sets of Kimble Glass, Inc., Soxhlet extractors, condensers, and flasks (Vineland, NJ)
Two Glas-Col combo round bottom extraction heating mantles (Terre Haute, IN)
Barnstead Electrothermal EMD heating mantle (Boston, MA)
Pierce Reacti-Therm 18780 heating module (Rockford, IL)

Carbon Analysis Laboratory
Twelve DRI Model 2001 thermal/optical carbon analyzers (Atmoslytic Inc., Calabasas, CA) using reflectance and transmittance analysis and pyrolysis correction
Two Agilent Model 6890N Gas Chromatography (GC)/5973 Mass Spectrometer (MS) Detectors/NIST O2 MS library (Foster City, CA) for organic speciation and O2 tests of the DRI Model 2001 analyzers
Japan Analytical Curie Point Pyrolyzer, Model JHP-3/3S (Tokyo, Japan) for characterizing polymers and macro-molecular compounds
Organic Speciation Laboratory

Agilent Model 5975C Triple Axis Mass Spectrometric Detector (Foster City, CA) for integraton with DRI Model 2001 analyzers and detrmination of organic markers for each IMPROVE carbon fraction
SRI Instruments Helium Ionization Detector (HID) (Torrance, CA) for the detection of gases (CO2, H2, N2)
Shimadzu TOC-VCS Total Organic Carbon Analyzer with ASI-V Autosampler (Kyoto, Japan) for water-soluble OC (WSOC)
Thermo (Carlo Erba) Model Flash EA1112 Combustion CHNS/O Analyzer (Waltham, MA) for elemental concentrations of C, H, N, S, and O
Dionex ICS-3000 Ion Chromatograph with AS40 Autosampler, Pulsed Amperometric Detector (pAD), and EP-50 Electrochemical Detector (ECD) (Sunnyvale, CA) for carbohydrates and organic acid analysis
Agilent 1200 Series High Performance Liquid Chromatograph (HPLC) with UV detector (Foster City, CA) for organic acid and WSOC classification
HPLC with Alltech 3300 Evaporative Light Scattering Detector (ELSD) (Deerfield, IL) for carbohydrates, organic acids, and HULIS
Ocean Optics Maya2000 Pro Spectrometer with DH-2000 Deuterium Tungsten Halogen Light Source (Dunedin, FL) for multi-wavelength measurement of filters

Sample Archiving and Storage
116 m3 walk-in refrigerator
Two 28 m3 walk-in refrigerators
Nine 0.6 m3 upright refrigerators
Seven 1.3 m3 chest freezers
Gravimetric and Light Transmission (babs) Laboratory
Herrtronic Model MSM temperature and humidty controller (Lancaster, PA) that maintains weighing environment with USEPA FRM specifications (30-40% RH and 20-23 °C)
Two Mettler XP-6 microbalances (Hightstown, NJ)
Two Mettler MT-5 microbalances (Hightstown, NJ)
Two Mettler AE200 analytical balances (Hightstown, NJ)
Mettler PJ6000 electronic pan balance (Hightstown, NJ)
Sartorius SE2 microbalance (Edgewood, NY)
Sartorius R160D analytical balance (Edgewood, NY)
Sartorius AC121S analytical balance (Edgewood,NY)
Sartorius LA120S analytical balance (Edgewood,NY)
Cahn 33 electrobalance (Cerritos, CA)
Two Tobias and Associates transmission densitometers (Ivyland, PA) adapted for the measurement of particle light transmission on filter media
Magee Scientific dual wavelength (370 nm and 880nm) transmissometer (Berkeley, CA)
Elemental and Microscopic Analysis Laboratory
Panalytical Epsilon 5 energy dispersive XRF spectrometer (Almelo, Netherlands)
Thermo Electron X Series ICP-MS with a New Wave Laser Ablation connection (Madison, WI)
Leitz Ortholux binocular microscope (Munich, Germany)
Wet Chemistry Laboratory
Integrated Air System, Inc., 6-foot sterile bench (Minneapolis, MN)
Orion 720A pH meter (Cole-Parmer, Vernon Hills, VA)
Brinkmann 702 SM Titrino Automated Titrator for pH and Karl Fischer analysis (Burlingame, CA)
Various specific ion electrodes
YSI Model 32 Conductivity Meter (Yellow Springs, OH)
Two Dionex Model ICS-3000 Ion Chromatographs (IC) (Sunnyvale, CA) and one Dionex ICS-2100 IC (Sunnyvale, CA) for anions and cations
Astoria 302A Colorimetry System with a 301A autosampler (Astoria, OR) for ammonium
Varian SpectrAA 880 atomic absorption spectrophotometer with an SP5 autosampler (Walnut Creek, CA) for soluble metal analysis
Particle Resuspension Unit
Gilson Sieves 4 mm-25 μm (Worthington, OH)
WS Tyler Model RX-86 sieve shaker (Mentor, OH)
Retsch Model PM100 Ball Mill (Newton, PA)
Carver Model M 25 ton Laboratory Press (Menomonee Falls, WI)
PM1.0, PM2.5, PM10, and TSP size-selective inlets
DRI particle resuspension chamber (0.4 m3; Reno, NV), which accommodates >8 parallel channels for samples in 1, 2.5, 10, and 30 µm size ranges
PM Field Sampling Unit
Twenty DRI Sequential Filter Samplers (SFS; Reno, NV) for simultaneous collection on multiple filter packs with or without denuders
One hundred twenty Airmetrics MiniVol samplers (Eugene, OR) with both PM10 and PM2.5 impaction jets
BGI model PQ 200 PM2.5 FRM sampler (Waltham, MA)
Two BGI model OMNI portable FRM samplers (Waltham, MA)
Six MSP Micro Orifice Uniform Deposition Impactor (MOUDI) samplers (Shoreview, MN) with rotators and impaction plates from 10 µm to 0.05 µm


Judith Chow, Sc.D.
Lab Director


Desert Research Institute
2215 Raggio Parkway
Reno, NV 89512


Atmospheric Sciences