Air quality monitoring with the original radial symmetry diffusive sampler

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The radial symmetry diffusive sampler

What is radiello system for air quality monitoring?

radiello is a sampling “system” for air quality monitoring that requires the use of several components to operate. The main components are: a supporting plate, a diffusive body, an adsorbing cartridge, a barcode label to make the sample traceable.
With these few, but essential, elements your sampling will be successful.

Virtues of air quality monitoring with radiello®

It weighs only 9 g

it can also be used on short periods of time

it requires no power supply or batteries

it does not use noisy pumps

There are no electrical triggers

Sampling indoor, outdoor, in the company, at home. It is easy to use.

Air quality monitoring with the Radiello diffusive sampling does not involve the use of heavy and encumbering pumping systems, it does not have energy power supply problems, it does not require supervision, it is noiseless, not flammable and it does not present an explosion hazard. The diffusive sampling can be performed by anybody, anywhere, with very affordable costs.

By virtue of radial symmetry, the uptake rate is:

  • high, despite having the same dimensions, radiello’s uptake rate is at least three times higher than that of any axial diffusive sampler;
  • constant, thanks to the great adsorbing capacity of the adsorbing substrates;
  • reproducible, due to the continuous control of all the used materials’ homogeneity and the check of all the production lots of radiello;
  • precisely measured, because the flow rate is not estimated but calculated experimentally, measured in a dynamic atmosphere controlled chamber in a wide range of conditions of concentration, temperature, humidity, air velocity, presence of interfering…

radiello®'s products

Discover the complete range of radiello’s products:

• Adsorbing and chemiadsorbing cartridges
• Diffusive bodies
• Supporting plates and adapters
• Starter kits
• Radiello-ready-to-use
• Accessories

radiello® Documentation

Visit our download area to receive all of our available technical documentation (Methods, Technical Sheets, Certificates) and to submit a request for specific technical information.

Download Area

Scientific literature radiello®

High uptake rate radial diffusive sampler suitable for both solvent and thermal desorption

1996 - Cocheo, V., Boaretto, C., Sacco P.

A new diffusive sampler with radically changed diffusive path geometry was developed. The small cylinder has a height greater than its radius; the diffusive surface is the external cylindrical one, and the adsorber is a coaxial inner cylindrical cartridge. Due to the high value of diffusive area-path length ratio and to the high loading capacity… View Article

Ambient volatile organic compounds monitoring by diffusive sampling. Compatibility of high uptake rate samplers with thermal desorption

1997 - Bates, M., Gonzalez-Flesca, N., Cocheo, V., Sokhi, R.

Field and laboratory validation studies were carried out on a novel, high uptake rate, radial diffusive sampler loaded with Carbotrap, a thermally desorbable adsorbent. For field experiments parallel techniques were employed for comparison. The goal was to assess the compatibility of the device for subsequent thermal desorption and preconcentration of the sample for analysis. Some… View Article

Benzene exposure assessment at indoor, outdoor and personal levels. The French contribution to the Life MACBETH Programe

2000 - Gonzalez-Flesca N., Bates M.S., Delmas V., Cocheo V.

Many VOC represent hazards to human health through chronic exposure. Recent European and world-wide legislation proposes limit values for ambient concentrations of these compounds. However, very little experimental data exists for true population exposure. In 1996, the European MACBETH initiative set out to measure population exposure to benzene in six European cities. This study details… View Article

Atmospheric volatile organic compound monitoring. Ozone induced artefact formation

2000 - Bates M.S., Gonzalez-Flesca N., Sokhi R., Cocheo V.

Assessment of population exposure to VOC in ambient atmospheres is receiving heightened interest as the adverse health effects of chronic exposure to certain of these compounds are identified. Active (pumped) and passive samplers are the most commonly used devices for this type of monitoring. It has been shown, however, that these devices, along with all… View Article

Exposure to benzene in urban workers: environmental and biological monitoring of traffic police in Rome

2001 - Crebelli, R., Tomei, F., Zijno, A., Ghittori, S., Imbriani, M., Gamberale, M., Martini, A., Carere A.

OBJECTIVES To evaluate the contribution of traffic fumes to exposure to benzene in urban workers, an investigation on personal exposure to benzene in traffic police from the city of Rome was carried out. METHODS The study was performed from December 1998 to June 1999. Diffusive radiello® personal samplers were used to measure external exposures to… View Article

An overview of commonly used methods for measuring benzene in ambient air

2001 - Skov, H., Lindskog, A., Palmgren, F., Christensen, C.S.

Emitted primarily from traffic, benzene has been identified as a carcinogen, inflicting deleterious effects on human health. This has mandated a high degree of scientific attention, both to measure ambient levels in urban regions and to explore mitigation strategies, which can form the basis of policy. In this paper, we present an overview of the… View Article

Benzene exposure and the effect of traffic pollution in Copenhagen, Denmark

2001 - Skov, H., Hansen, A.B., Lorenzen, G., Andersen, H.V., Løfstrøm, P., Christensen, C.S.

Benzene is a carcinogenic compound, which is emitted from petrol-fuelled cars and thus is found ubiquitous in all cities. As part of the project Monitoring of Atmospheric Concentrations of Benzene in European Towns and Homes (MACBETH) six campaigns were carried out in the Municipality of Copenhagen, Denmark. The campaigns were distributed over 1 year. In… View Article

Human exposure to traffic pollution. Experience from Danish studies

2001 - Hertel, O., Jensen, S.S., Andersen, H.V., Palmgren, F., Wåhlin, P., Skov, H., Nielsen, I.V., Sørensen, M., Loft, S. and Raaschou-Nielsen, O.

Air pollution may have severe long-term as well as short-term health effects. The determination of possible links between pollution levels and impact on human health is, however, not a straightforward task. A key problem is the assessment of human exposure to ambient pollution levels. In later years, the possible role of particulate pollution as a… View Article

Air quality in major Portuguese urban agglomerations

2002 - Ferreira, F., Tente, H., Torres, P.

This paper presents some recent research work that has been developed for the major Portuguese agglomerations. Three main topics are developed: the methodology used in Portugal to limit agglomerations (as they are defined by the European Air Quality Framework Directive 96/62/EC), the preliminary assessment of the air quality levels in the most densely populated agglomerations… View Article


Complete sampling with radiello

14 November 2019

Would you like to find out how to perform a complete sampling with radiello? Have a look to our video tutorial in the section “how to use radiello” or look for radiello on YouTube.

Certificates of analysis

14 November 2019

Certificates of analysis of the production batches of radiello, catalogued according to the year of production of the certificate, are available in the section “Certificates of quality“.

The list of scientific publications on radiello has been extended.

10 November 2019

The list of scientific publications on radiello has been extended. Almost 100 publications in international scientific journals. All abstracts are available in the section “Bibliography“.

Anaesthetic gases and vapours

10 November 2019

Anaesthetic gases and vapours: the sampling rate, experimentally measured, for desflurane is now available. Radiello codice RAD 132

Radiello is now available for the sampling of 1,3-butadiene and isoprene.

14 October 2019

1,3-butadiene and isoprene are trapped by adsorption, recovered by thermal desorption and analysed by capillary gas chromatography with MS detector. The LOQ for 8-hour workplace exposure is 0.3 μg·m-3. For a 7-day exposure to ambient air, the LOQ is 0.01 μg·m-3. radiello code RAD 141

New packages of 5 cartridges are now available!

14 October 2019

New packages of 5 cartridges are now available! We expanded radiello’s product selection proposing new packages of  5 adsorbing or chemiadsorbing cartridges, suitable for performing a limited number of sampling!


14 October 2019

Radiello site has been  completely renewed, becoming more interactive with new contents and new graphics. Please do not hesitate to contact us for further information: info@radiello.com

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