Aerosol analysis by cavity-ring-down laser spectroscopy

Bulatov, Valery; Fisher, Michal; Schechter, Israël

doi:10.1016/s0003-2670(02)00516-0

Cited by 53 publications

(46 citation statements)

References 37 publications

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“…The experimental system used in this work consists of the same components as the majority of those to be found in the literature (Bulatov et al 2002(Bulatov et al , 2006Riziq et al 2007;Beaver et al 2008Beaver et al , 2010Dinar et al 2008;Freedman et al 2009;Lang-Yona et al 2009Radney et al 2009;Adler et al 2010;Nakayama et al 2010) and has been described in detail in previous publications (Miles et al 2010a(Miles et al , 2010b. Briefly, particles were generated from an aqueous suspension/solution of the aerosol medium (polystyrene beads or sodium chloride) using a constant output atomizer (TSI Model 3076), before being passed through a Nafion dryer (Perma Pure PD-100T-12SS, http://www.permapure.com/) to remove residual water.…”

Section: Methodsmentioning

confidence: 99%

“…A-CRDS is now routinely used in laboratory (Sappey et al 1998;Vander Wal and Ticich 1999;Smith and Atkinson 2001;Bulatov et al 2002Bulatov et al , 2003Bulatov et al , 2006Strawa et al 2003;Pettersson et al 2004;Baynard et al 2006;Garland et al 2007;Riziq et al 2007;Rudić et al 2007;Dinar et al 2008;Riziq et al 2008;Butler et al 2009;Freedman et al 2009;Khalizov et al 2009;Lang-Yona et al 2009Radney et al 2009;Xue et al 2009;Adler et al 2010;Hasenkopf et al 2010;Miles et al 2010aMiles et al , 2010b and field studies (Thompson et al 2002(Thompson et al , 2003Strawa et al 2006;Garland et al 2008;Nakayama et al 2010) to measure extinction by both aerosol ensembles (Vander Wal and Ticich 1999;Thompson et al 2002Thompson et al , 2003Thompson et al , 2008Strawa et al 2003;Pettersson et al 2004;Baynard et al 2006Baynard et al , 2007Garland et al 2007;Riziq et al 2007;Beaver et al 2008;…”

Section: Introductionmentioning

confidence: 99%

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Sources of Error and Uncertainty in the Use of Cavity Ring Down Spectroscopy to Measure Aerosol Optical Properties

Miles

Rudić

Orr-Ewing

et al. 2011

Aerosol Science and Technology

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The use of cavity ring down spectroscopy to retrieve aerosol complex refractive index from optical property measurements has seen increasing popularity over the past few years. However, few studies have looked at the limit which sources of error and uncertainty inherent in the cavity ring down method place on the accuracy with which the refractive index can be retrieved. In this paper, we consider both experimental sources of error and those which compromise the theoretical models against which measurements are compared, both reviewing previously published work and presenting new data. Our results show that for absolute measurements made using single-cavity instruments, factors such as uncertainty in the length of the ring down cavity occupied by aerosol and the counting efficiency of the CPC can introduce an error of ∼2.5% into the real part of the refractive index retrieved from experiment. This is significantly higher than the typical 1% error quoted in previously published work. We note that due to the dependence of particle extinction efficiency on diameter, the effect of a given error on measurements for different particle sizes is not constant.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sources of Error and Uncertainty in the Use of Cavity Ring Down Spectroscopy to Measure Aerosol Optical Properties

Miles

Rudić

Orr-Ewing

et al. 2011

Aerosol Science and Technology

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“…The pulsed CRD technique for aerosol extinction measurements has recently been validated by comparison of measured optical cross-section to calculated optical cross-section for size selected particles of known refractive index (Bulatov et al 2002;Pettersson et al 2004). The fundamental differences between pulsed and continuous-wave (CW) cavity ring-down techniques are captured in a review by Brown (2003).…”

Section: Measurement Techniquementioning

confidence: 99%

“…However, the propagated uncertainties are large. Recent developments of aerosol cavity ring-down systems (Smith and Atkinson 2001;Bulatov et al 2002;Atkinson 2003;Strawa et al 2003;Pettersson et al 2004;Moosmuller et al 2005) and optical extinction cells (Weiss and Hobbs 1992;Virkkula et al 2005b) to measure aerosol extinction coupled with photoacoustic systems (Arnott et al 1999;Arnott et al 2000;Lack et al 2006) and the multi-angle absorption photometer (Petzold et al 2005) to measure aerosol absorption promise to reduce the uncertainties in the aerosol optical properties.…”

Section: Introductionmentioning

confidence: 99%

Design and Application of a Pulsed Cavity Ring-Down Aerosol Extinction Spectrometer for Field Measurements

Baynard

Lovejoy

Pettersson

et al. 2007

Aerosol Science and Technology

104

109

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This paper describes the design and application of a pulsed cavity ring-down aerosol extinction spectrometer (CRD-AES) for insitu atmospheric measurement of the aerosol extinction coefficient and its relative humidity dependence. This CRD-AES measures the aerosol extinction coefficient (σ ep ) at 355 nm, 532 nm, 683 nm, and 1064 nm with a minimal size dependent bias for particles with diameter less than 10 μm. The σ ep at 532 nm is measured with an accuracy of 1% when extinction is ≥10 Mm −1 . The precision is limited by statistical fluctuations within the small optical volume and the time resolution of extinction at 2% uncertainty for various air mass types is evaluated. The CRD-AES is configured with two separate cavity ring-down cells for measurement of the extinction coefficient at 532 nm. This allows the determination of the RH dependence of extinction at 532 nm through independent RH control of the sample for each measurement. Gas phase absorption and minimization of potential interferences is also considered.

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“…In particular, in situ measurements of the extinction and other optical parameters of atmospheric aerosols are crucial, and these require real-time, accurate, and sensitive techniques that can detect the ambient aerosols and their rapid temporal and spatial changes. Recent years have seen a rapid rise in the use of cavity ringdown spectroscopy (CRDS), a sensitive and direct optical extinction technique, to determine the optical properties of both laboratory generated and atmospheric ambient aerosols [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

mentioning

confidence: 99%

Measurement of aerosol optical extinction using diode laser cavity ringdown spectroscopy

Liu

Zhang

2013

Chin. Sci. Bull.

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Accurate measurement of optical extinction of atmospheric aerosols is important for quantifying the direct climate effects of aerosols. A portable cavity ringdown spectrometer utilizing a modulated multimode blue diode laser (linewidth ~0.2 nm) is developed to measure the aerosol optical extinction. Laboratory generated ammonia sulfate particles (<1 μm in diameter) are characterized, with good agreements between the experimental measurements and Mie theory calculations. An optical extinction detection sensitivity of 0.24 Mm −1 (1σ) is achieved. Measurements of ambient aerosols are also carried out. This study demonstrates the feasibility of a compact, multimode diode laser cavity ringdown spectrometer for sensitive measurements of the optical extinction of atmospheric aerosols. aerosol, optical extinction, spectroscopy Citation:Liu Y D, Zhang J S. Measurement of aerosol optical extinction using diode laser cavity ringdown spectroscopy.

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Aerosol analysis by cavity-ring-down laser spectroscopy

Cited by 53 publications

References 37 publications

Sources of Error and Uncertainty in the Use of Cavity Ring Down Spectroscopy to Measure Aerosol Optical Properties

Sources of Error and Uncertainty in the Use of Cavity Ring Down Spectroscopy to Measure Aerosol Optical Properties

Design and Application of a Pulsed Cavity Ring-Down Aerosol Extinction Spectrometer for Field Measurements

Measurement of aerosol optical extinction using diode laser cavity ringdown spectroscopy

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