Personal/Microenvironmental Aerosol Speciation Sampler (PMASS)

Personal/Microenvironmental Aerosol Speciation Sampler (PMASS) Overview

The Model 240 Personal/Microenvironmental Aerosol Speciation Sampler, or PMASS™, is a compact sampler with a miniaturized, sharp-cut cyclone inlet and two parallel collection channels. Each channel accommodates a denuder and two tandem filters for complete, artifact-free evaluation of the chemical composition of particles below 2.5 µm diameter.

Personal/Microenvironmental Aerosol Speciation Sampler (PMASS) Specifications

Total flow rate	4.0 L/min
Flow rate per channel	2.0 L/min
Dimensions (W x H x D), mm	106 x 65 x 45 (4.2" x 2.6" x 1.8")
Weight	250 g (9 oz)

Personal/Microenvironmental Aerosol Speciation Sampler (PMASS) Design

The Model 240 PMASS™ is light and small enough to be worn by a person. Field tests yield results equivalent to that of conventional samplers. The device can also be used with a desktop sampling station for stationary sampling in a microenvironment.

APPLICATIONS

• Simultaneous measurement of inorganic and organic aerosols
• Evaluation of personal exposures to PM_2.5 mass, nitrates, sulfates, organic and elemental carbon
• Evaluation of personal exposure to metal aerosols
• Studies of personal exposure in various environments
• Personal sampling and stationary Microenvironmental sampling

Personal/Microenvironmental Aerosol Speciation Sampler (PMASS) Features

• Metal cyclone inlet, no grease or oil
• Two parallel filter collection channels
• Each channel accommodates a denuder and one or two filters
• Flow rate is 2 L/min per channel
• Total flow rate of 4 L/min is easily supplied by battery-powered personal pump
• Surfaces upstream of filters are electrically conducting aluminum
• Total sampler weight is approximately 250 g