By Henry J. McDermott
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This publication bargains ready-to-use info for measuring a wide selection of airborne dangerous fabrics together with chemical substances, radon, and bioaerosols. It offers the latest procedures for air sampling, gathering organic and bulk samples, comparing dermal exposures, and picking the benefits and barriers of a given air tracking technique.
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Additional info for Air Monitoring for Toxic Exposures
4. Grunder, F. I. PAT Program Report Background and Current Status. AIHA J. 63:797–798, 2002. qxd 7/19/04 6:24 PM Page 33 CHAPTER 2 HAZARDS This chapter provides background on the types of hazards that exposure monitoring is intended to evaluate. The broadest categories are health hazards (which cause disease) and physical hazards (which cause harm from pressure, temperature, impact, or other physical effect). Chemicals are the largest group of hazardous agents evaluated by air sampling and, depending on the speciﬁc compound, can pose one or both types of hazards.
The discussion below ﬁrst covers electronic instruments and then colorimetric devices. 11. Diagram showing components of typical electronic direct reading instrument. 11 shows a generic diagram of a typical direct-reading electronic instrument for gas, vapor, or particulate matter consisting of a detector, pump, signal processing unit, data display, power supply, and perhaps a data storage section. Of course all of these can be included in one small package—sometimes small enough to ﬁt into a shirt pocket—but it is easier to understand the explanation of the different instrument types and capabilities in this section using this simple model.
If the IP for a compound is greater than the eV rating of the most intense lamp available, it cannot be analyzed using a PID device. Photoionization devices are good for spot checks in areas where the composition of the airborne contaminant has been determined by more speciﬁc procedures. qxd 7/19/04 6:23 PM Page 28 28 AIR MONITORING OVERVIEW • • tube air samples for laboratory analysis. Flame ionization detector (FID) devices use an oxygen/hydrogen ﬂame to ionize molecules of ﬂammable compounds.
Air Monitoring for Toxic Exposures by Henry J. McDermott