MerPAS - Indoor Air Sampler
From MerPAS
For indoor applications, the MerPAS® sampler is deployed without the protective jar housing regardless of Hg air concentration since the sample does not need protection from the elements. Mounting stands may be purchased from Tekran if needed. Sample time is determined by monitoring goals and expected air Hg levels. The yellow body diffusive barrier is used due to better performance at low wind speeds.
Products Details
For general guidelines on the appropriate MerPAS® sampling configuration, see the Estimated Sampling Intervals table in the attached document. For more information or for assistance with analysis of MerPAS® samples, contact us at our MerPAS@tekran.com email address.
Applications
- General indoor air passive sampling
- Indoor Hg Spill investigations
- Dental office surveys
- Industrial hygiene assessments
- Hg-related industries, eg: CFL recycling
Outdoor Ambient Air - White Body with Jar
The MerPAS sampler fitted with the white body diffusive barrier is best used for sampling outdoor ambient air of low to intermediate mercury concentrations (0- 50 ng/m3). The sampler may be deployed for intervals of 1 week to 1 year. This sampler may also be used at concentrations of 50 to 1000 ng/m3 for shorter time intervals. Mounting brackets available (Part # 04-2HPAS-02).
Example Applications (Part #: MerPAS-WJ, jar included)
- Background Ambient Air
- Heavy Industry Areas
- Urban Air
- Site Survey Mapping
Outdoor Contaminated Ambient Air
The MerPAS sampler fitted with the yellow body diffusive barrier is best used for sampling outdoor ambient air with highly elevated mercury concentrations (50 ng/m3 ~ 1 mg/m3). The sampling time is typically hours up to 7 days, depending on the expected Hg levels and project goals. Mounting brackets available (Part # 04-2HPAS-02).
Example Applications (Part #: MerPAS-YJ, jar included)
- Mercury Remediation Sites
- Artisanal Gold Mining Areas
- Hg Hot Spot Mapping
- Hg Recycling Perimeter
Indoor Air - Yellow Body (Mount sold separately)
For indoor applications, the MerPAS sampler is deployed without the protective jar housing at any Hg concentration. Sample time is determined by monitoring goals and expected air Hg levels. The yellow body diffusive barrier samples at a slower rate and reduces the Hg loading onto the MerPAS sampler. Indoor mounting brackets available (Part #: MerPAS-PEM).
Personal Exposure - Yellow Body (Mount sold separately)
The MerPAS sampler may also be configured as a personal sampler. For this configuration, the yellow body diffusive barrier is used without any protective housing. The sampler is attached to a plastic plate and then attached to the lapel or shirt pocket to keep the device near the worker breathing zone. Typical sample time is 8 hours. Personal exposure mounting brackets available (Part #: MerPASPEM).
Example Applications (Part #: MerPAS-Y)
- Private Residence Testing
- Real Estate Inspections
- Dental Offices
- Industrial Hygiene Monitor
- Schools and Science Labs
- Laboratory & Hospitals
- Hg Recycling Interior
Estimated Sampling Intervals
The below table provides some general guidelines on MerPAS configuration and recommended deployment times for a variety of sampling applications. Note that the minimum and maximum deployment times take into consideration the target range of the instrument used for analysis. The sampling rates of the white-body and yellow-body sampler are listed below. Confirm the suggested ranges listed below are compatible with the instrument used for analysis.
White-Bodied w/ Jar Sample Rate (outdoor air) = 0.111 m3/day
Yellow-Bodied w/ Jar Sample Rate (outdoor air) = 0.06 m3/day*
Yellow-Bodied - No Jar Sample Rate (indoor air) = 0.070 m3/day*
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