High volume sampler

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A high-volume sampler (HVS) is a measuring device for recording airborne dust and other pollutants. It is used when measuring particles in the outside air. The particularly high air throughput, which can be over 100 m 3 / h, is characteristic of the measuring principle .

Structure and procedure

A high-volume sampler essentially consists of a volume flow meter and a blower for volume flows between 1.5 m 3 / min and 1.9 m 3 / min. When sampling particles, they are deposited on a filter and the filter is then weighed. The flow control is such that a diffuser acts as an aerodynamic rectifier before the particle separation . The filter can be heated to counteract an increase in pressure loss caused by the separation of drops. The sampling time per filter is generally around 24 hours. Semi-volatile pollutants can be captured using polyurethane foam .

The aerodynamic diameter of the particles recorded by the high-volume sampler ranges between 0.3 µm and 30 µm. The advantage of the high-volume sampler is that there is enough dust available for chemical analysis after the sampling time. With a twenty-four hour sampling time and an assumed mass concentration of 30 µg / m 3 , the separated particle mass is approximately 65 mg. In relation to a volume of 2000 m 3 sucked in during a 24-hour sampling period , the relative detection limit is 4 µg / m 3 .

The disadvantage of operating a high-volume sampler is its high level of noise.

literature

  • VDI 2463 Part 2 (draft): 1977-07 Measurement of particles; Measuring the mass concentration of particles in the outside air; High Volume Sampler - HV 100. VDI-Verlag, Düsseldorf ( summary and table of contents online ).

Individual evidence

  1. ↑ Jaroslav Šimeček, Eero Siltanen: Contribution to the determination of the total and fine dust concentration . In: Dust - cleanliness. Air . 29, No. 11, 1969, ISSN  0949-8036 , pp. 460-464.
  2. ↑ a b OLEM US EPA: Compendium Method TO-4A: Determination of Pesticides and Polychlorinated Biphenyls in Ambient Air Using High Volume Polyurethane Foam (PUF) Sampling Followed by Gas Chromatographic / Multi-Detector Detection (GC / MD). (PDF) January 1999, accessed on June 17, 2019 .
  3. ^ A b Günter Baumbach: Air pollution control . Springer-Verlag Berlin, Heidelberg, New York, 2nd edition 1992, ISBN 3-540-55078-X , pp. 216-217.
  4. ↑ VDI 2463 sheet 2 (draft): 1977-07 measuring of particles; Measuring the mass concentration of particles in the outside air; High Volume Sampler - HV 100. VDI-Verlag, Düsseldorf. P. 2.
  5. ^ A b Franz Joseph Dreyhaupt (Ed.): VDI-Lexikon Umwelttechnik. VDI-Verlag Düsseldorf 1994, ISBN 3-18-400891-6 , p. 614.
  6. ↑ a b VDI 2463 sheet 2 (draft): 1977-07 measuring of particles; Measuring the mass concentration of particles in the outside air; High Volume Sampler - HV 100. VDI-Verlag, Düsseldorf. P. 4.