Passive Badges for Compliance Monitoring Internationally

Pristas, R.

doi:10.1202/0002-8894(1994)055<0841:pbfcmi>2.0.co;2

Cited by 6 publications

(9 citation statements)

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“…On the other hand, the present results con®rm previous conclusions from studies by other authors, that passive sampling represents a good and reliable alternative to conventional assessment methods of occupational exposure [8,12].…”

Section: Resultssupporting

confidence: 93%

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Performance assessment of a passive sampler in industrial atmospheres

Delcourt¹,

Sandino²

2000

International Archives of Occupational and Environmental Health

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In this work we investigate the performances of a passive sampler (GABIE badge) in industrial atmospheres, in accordance with the general specifications of the EN 838 standard. The field experiment was carried out in a paint-manufacturing factory producing a large number of pollutants at the workplaces. A comparison was performed between the results obtained by passive sampling and the conventional tube/pump method (reference method) on nine solvents usually encountered in the different workshops: n-butanol, isobutanol, toluene, ethylbenzene, m-xylene, methylisobutylketone, methylethylketone (MEK), ethyl acetate, butyl acetate. Results were compared by use of the distribution of the relative difference between badge "passive sampling" and tube "active sampling" results (with the latter considered as the reference method). In general, results revealed good agreement between passive and active sampling (except in the case of MEK) and confirmed the accuracy of sampling rates determined for the GABIE sampler. Bias was generally low and variability could be considered to be satisfactory (generally < 20% with a maximum of 30% for ethylbenzene). For MEK, strong bias was noted together with probable underestimation of the tube results. Additional results lead us to suggest that this phenomenon could be due to poor desorption of the SKC tubes by carbon disulphide (CS2); (quantitative recovery for MEK is in fact possible using other desorption solvents).

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Section: Resultssupporting

confidence: 93%

“…It is therefore not surprising that a growing number of countries recognise this technique as being a method of monitoring workplace atmospheres [8].…”

Section: Introductionmentioning

confidence: 99%

Performance assessment of a passive sampler in industrial atmospheres

Delcourt¹,

Sandino²

2000

International Archives of Occupational and Environmental Health

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“…(6) The measurement technique is based on molecular diffusion. The gas molecules diffuse into an adsorbent material where they are quantitatively trapped, giving a mass value integrated over exposure time.…”

Section: Introductionmentioning

confidence: 99%

Behavior of the GABIE, 3M 3500, PerkinElmer Tenax TA, and RADIELLO 145 Diffusive Samplers Exposed Over a Long Time to a Low Concentration of VOCs

Oury

Lhuillier

Protois

et al. 2006

Journal of Occupational and Environmental Hygiene

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Diffusive sampling is particularly suited to determine time-weighted average volatile organic compound (VOC) concentration in occupational hygiene and environmental air monitoring. The purpose of this study was to measure the sampling rate variation of four different samplers in a special use--the exposure to a low concentration of volatile organic compound (10 to 200 ppb) for a long period (1 to 14 days). PerkinElmer tube-type adsorbent was packed with Tenax TA and RADIELLO cartridge packed with Carbograph 4. Badge-type activated carbon diffusive samplers 3M 3500 and GABIE were exposed to the same controlled atmospheres of benzene as meta-xylene (BTX) during the same exposure times. Performance samplers were observed for variability of uptake rates according to concentration levels, exposure duration, back diffusion, and competition phenomena at the adsorption sites. Particular benzene behavior has been noted for the thermally desorbable tube-type diffusive sampler: the measured sampling rates decrease with time following an exponential profile. With badge-type active charcoal diffusive samplers, the uptake rates were found to be highly stable and unaffected by time exposure. Overall, in the region of a few tens of ppb, for long-time exposure and for the lightest compounds, 3M 3500 and GABIE diffusive samplers seem the most appropriate diffusive sampling technique in terms of performance and facility in use.

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“…The differential equation that describes passive sampling can be written as following Equation 1, based on Fick´s first law: (1) where m is the mass of adsorbed compound (g), t is the sampling time (min), A is the area of the sampler's cross-section (cm 2 ), D is the coefficient of diffusion of the compound in the air (cm 2 min -1 ), L is the length of the stagnant gaseous layer (cm), C o is the ambient concentration of the compound in the air (g cm -3 ), and C a is the compound's concentration in the air layer adjacent to the adsorbent's surface (g cm -3 ).…”

Section: Theoretical Approachmentioning

confidence: 99%

“…Diffusive samplers, also known as passive samplers, were first developed for monitoring air in the workplace and still are very used for this purpose, 1,2 but display a great potential for monitoring ambient air quality. [3][4][5][6] Continuous monitoring of VOC (volatile organic compounds) today is still only feasible for a few compounds, particularly BTEX.…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of benzene uptake rate in Tenax TA diffusive samplers

Andrietta¹,

Tomaz²,

Tresmondi³

et al. 2010

Quím. Nova

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This paper proposes a methodology to predict benzene uptake rate in ambient air, using passive samplers with Tenax TA. Variations in the uptake rate were found to occur as a function of the sampling time; and were greater at the beginning of sampling. An empirical model was obtained and values for uptake rate agree with literature. Concentration prediction errors can be minimized by using sampling times of 4 to 14 days, thus avoiding the influence of excessive uptake rates in the initial days and the influence of back diffusion at the end of the sampling period

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Passive Badges for Compliance Monitoring Internationally

Cited by 6 publications

References 0 publications

Performance assessment of a passive sampler in industrial atmospheres

Performance assessment of a passive sampler in industrial atmospheres

Behavior of the GABIE, 3M 3500, PerkinElmer Tenax TA, and RADIELLO 145 Diffusive Samplers Exposed Over a Long Time to a Low Concentration of VOCs

Experimental determination of benzene uptake rate in Tenax TA diffusive samplers

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