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Published byElaine Ross Modified over 9 years ago
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Sampling Methods
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Sampling Purpose –Detect and quantify –Identify sources/amplification –Assess potential virulence –Assess effectiveness of controls
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Cladosporium
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Steps in Sampling Selection of a laboratory Selection of analyts Selection of methods Sensitivity of method Field sampling QC Reporting and lab support
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Approaches to Sampling Qualitative - Type Quantitative - Concentration
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Overview of Microbial Sample Collection Methods (Liquid Impinger)
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Overview of Microbial Sample Collection Methods (Fungal Spore Sampling & Spore Traps)
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Overview of Microbial Sample Collection Methods (Impactor Samplers)
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Overview of Microbial Sample Collection Methods (Sedimentation Settling Plates)
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Overview of Microbial Sample Collection Methods (Airborne Particulates & Bulk Samples)
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Overview of Microbial Sample Collection Methods (Dust & Tape Lifts)
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Tape Lift Sampling
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Overview of Microbial Sample Collection Methods (Swab/Wipe & Surface Contact Plate)
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Overview of Microbial Sample Collection Methods (Water Sample & Endotoxins in air)
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Overview of Microbial Sample Collection Methods (Mycotoxins in Air)
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Overview of Microbial Sample Collection Methods (MVOC’s in Air & β-1,3-D-Glucans in Air)
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Microbial By Products (Ergosterol in Air) Notes: *Can also analyze for in bulk, surface and water samples. CFU-colony forming units M3-cubic metres of air Mg-milligrams Ng-nanograms Ppm-parts per million Ml-milliliter G-gram **References used to general Table 1 above are listed below 1-8
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environmentaleducati on.com
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Air Pump Rotameter Biosis Flow Valve Plate Sampling
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Stacked Plate Samplers
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Impinger Sampling Impingement –Liquid media
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Impinger Sampling Types of Impingers –AGI-30 –AGI-4
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Impinger Sampling
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Air Sampling Types of Filtration –Membrane filter cassette
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Passive Sampling Deposition –Gravity on agar
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Passive Sampling Types of gravitational –Settling plates
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Air Sampling (Spore Trap) Collects “everything” –Viable,non-viable,pollen, Unable to differentiate
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Carpet Sampling Collect spores in the carpet pile using air pump Identifies type of mold Looking for uncommon types Provides historical information
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Carpet Sampling
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Data Interpretation Concentration inside versus outside. Mold types inside versus outside. Presence or absence of a specific mold. Location of unknown source. Change in concentration following remediation. Is a “snap shot” in time.
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Stachybotris
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Aspergillus
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environmentaleducati on.com
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References
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