Absorption and scattering characterization of airborne microparticulates by a cavity ringdown technique

被引：16

作者：

Bulatov, V ^{[1
]}

Chen, YH ^{[1
]}

Khalmanov, A ^{[1
]}

Schechter, I ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Chem, IL-32000 Haifa, Israel

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2006年 / 384卷 / 01期

基金：

以色列科学基金会;

关键词：

cavity ringdown; aerosols; laser spectroscopy;

D O I：

10.1007/s00216-005-0173-8

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Nonresonant cavity ringdown laser absorption spectroscopy (CRLAS) was applied for detection and characterization of airborne particulates. Sensitive detection of a variety of aerosols under ambient conditions was achieved. The method provides, for the first time, time-resolved absolute aerosol concentration, with spatial resolution (along a line). The first report on absorption spectroscopy of monodispersed aerosols (in the size range 100-200 nm) is provided, and comparisons are made with the bulk data. The results indicate the possibility of applying CRLAS for selective analysis of aerosols. A new method for estimating the aerosol refraction index is also obtained from the ringdown data.

引用

页码：155 / 160

页数：6

共 32 条

[1]

ALTMANN J, 1994, AEROSOL SCI, V25, pS523

[2]

Bohren C.F., 1998, ABSORPTION SCATTERIN

[3]

Breitenstein M, 1999, PART PART SYST CHAR, V16, P249, DOI 10.1002/(SICI)1521-4117(199912)16:6<249::AID-PPSC249>3.0.CO

[4]

2-#

[5] Study of the morphology of a laser-produced aerosol plume by cavity ringdown laser absorption spectroscopy [J].

Bulatov, V ;

Khalmanov, A ;

Schechter, I .

ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2003, 375 (08) :1282-1286

[6] Aerosol analysis by cavity-ring-down laser spectroscopy [J].

Bulatov, V ;

Fisher, M ;

Schechter, I .

ANALYTICA CHIMICA ACTA, 2002, 466 (01) :1-9

[7]

BUSCH KW, 1999, ACS S SERIES, V720

[8] Cavity ring-down spectroscopy of OH radicals in low pressure flame [J].

Cheskis, S ;

Derzy, I ;

Lozovsky, VA ;

Kachanov, A ;

Romanini, D .

APPLIED PHYSICS B-LASERS AND OPTICS, 1998, 66 (03) :377-381

[9] Absorption spectroscopy measurements of NH and NH2 absolute concentrations in methane/air flames doped with N2O [J].

Derzy, I ;

Lozovsky, VA ;

Ditzian, N ;

Rahinov, I ;

Cheskis, S .

PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2000, 28 :1741-1748

[10] Absolute CH concentration in flames measured by cavity ring-down spectroscopy [J].

Derzy, I ;

Lozovsky, VA ;

Cheskis, S .

CHEMICAL PHYSICS LETTERS, 1999, 306 (5-6) :319-324

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