Laser-induced fluorescence instrument for measuring atmospheric SO2

Matsumi, Yutaka; Shigemori, Hiroyuki; Takahashi, Kenshi

doi:10.1016/j.atmosenv.2005.02.023

Cited by 22 publications

(15 citation statements)

References 23 publications

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“…Atmosférická síra v oboch plynných a aerosólových formách, má vplyv na nadregionálne a globálne prostredie, klimatické zmeny ako aj zdravie rôznych živých organizmov (Eisinger, Burrows, 1998;Krotkov et al, 2006;Krotkov et al, 2008;Matsumi et al, 2005). Oxid siričitý je hlavným prekurzorom kyslých dažďov a kyseliny sírovej tzv.…”

Section: Oxidy Síryunclassified

“…Oxid siričitý je hlavným prekurzorom kyslých dažďov a kyseliny sírovej tzv. smog (Inomata et al, 2006;Matsumi et al, 2005). V rovnakom čase, môže byť oxidovaný v atmosfére na formu síranového aerosólu (Krotkov et al, 2006), ktorý je dôležitou súčasťou jemné rozptýlených častíc v mestskej atmosfére (Verheggen, Mozurkewich, 2002).…”

Section: Oxidy Síryunclassified

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Development Trends in Air Pollution with Sulphur Dioxides in Area of Šaľa

Feszterová¹

2013

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Monitoring of current state and evaluation of observed pollution concentrations (sulphur dioxides) ÚvodEmisie chemických zlúčenín unikajúce do životného prostredia prírodnými a antropogénnymi aktivitami vedú k procesom znečistenia zložiek životného prostredia (Hreško et al., 2008). Zvyšuje sa množstvo znečisťujúcich látok unikajúcich do ovzdušia, vody a pôdy (Csuros, 1997a(Csuros, , 1997b Vollmannová et al., 2011). Rôzne štúdie naznačujú, že skupiny chemických látok v prostredí, ako sú organochlórované pesticídy, polychlórované bifenyly a iné xenoestrogény môžu ovplyvniť riziko vzniku rakoviny prsníka, poruchu plodnosti u človeka, predčasnú pubertu alebo iné ochorenie (Charlier, 2005;Charlier & Plomteux, 2002;Vilinová, 2012). Chemický priemysel patrí do skupiny priemyselných odborov spojených s únikom rozličných látok a plynov, ktoré nie sú prirodzenou zložkou vzduchu. Znečisťovanie prostredia vplyvom chemického priemyslu je témou prác mnohých autorov (Bartkowski, 1981;Blažej et al., 1981;Bobro & Matanin, 1992;Hronec, 1996; Macho & Sivaková, 1996;Prousek, 2001;Quarg et al., 1985;Tölgyessy, Piatrik & Tölgyessy, 1989;Tölgyessy et al., 2000). Je potrebné venovať stále väčšiu pozornosť ochrane prírodných zdrojov -najmä pôde, vode a ovzdušiu a tým si zabezpečiť rozvoj zdravého životného prostredia (Kontrišová, et al. 1997; Rózová et al., 2010). Slovenská republika sa nachádza v oblasti s najväčším regionálnym znečistením ovzdušia a kyslosťou zrážkových vôd v Európe (Klinda et al., 1993).Rýchle rastúca populácia, potreba zabezpečenia dostatočného množstva potravín, snaha o dosiahnutie vysokej životnej úrovne, rast dopravy a výroba energie, to sú faktory, ktoré ovplyvňujú život ľudí na Zemi. Súčasný rozvoj vedy a techniky poskytuje prostriedky na uspokojovanie našich potrieb, čo sa však prejavuje v zásahoch do životného prostredia. Všetky zložky životného prostredia, poznačila priemyselná expanzia, či sa to týka kvality ovzdušia a vody, hromadenia

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Section: Oxidy Síryunclassified

Development Trends in Air Pollution with Sulphur Dioxides in Area of Šaľa

Feszterová¹

2013

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“…In the early age, the use of a LIF instrument alone or combined with other optical measurement tools were applied to direct monitoring of gaseous pollutants, such as CO 2 , NO, NO 2 , N 2 O 5 , SO 2 , aerosol particle and aromatic hydrocarbons (Bessler et al, 2003;Miyazaki et al, 2008; Suzuki et al Matsumoto et al, 2005;Matsumi et al, 2005;Taketani et al, 2013;Sirignano et al, 2012). The successful application of LIF spectroscopy has expanded to the detection of chemicals in water, soil organic matter, solid organic waste, crude oil and soil contaminants (Uebel et al, 1996;Martins et al, 2011;Muller et al, 2011;Hegazi et al, 2005;Lemke et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Fluorescence Characteristic Spectra of Domestic Fuel Products through Laser Induced Fluorescence Detection

Wu¹,

Chang²,

Tsai³

et al. 2014

Journal of Soil and Groundwater Environment

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Traditional investigation procedures of soil and groundwater contamination are followed by soil gas sampling, soil sampling, groundwater sampling, establishment of monitoring wells, and groundwater monitoring. It often takes several weeks to obtain the analysis reports, and sometimes, it needs supplemental sampling and analysis to delineate the polluted area. Laser induced fluorescence (LIF) system is designed for the detection of free-phase petroleum pollutants, and it is suitable for onsite real-time site investigation when coupling with a direct push testing tool. Petroleum products always contain polycyclic aromatic hydrocarbon (PAH) compounds possessing fluorescence characteristics that make them detectable through LIF detection. In this study, LIF spectroscopy of 5 major fuel products was conducted to establish the databank of LIF fluorescence characteristic spectra, including gasoline, diesel, jet fuel, marine fuel and low-sulfur fuel. Multivariate statistical tools were also applied to distinguish LIF fluorescence characteristic spectra among the mixtures of selected fuel products. This study successfully demonstrated the feasibility of identifying fuel species based on LIF characteristic fluorescence spectra, also LIF seemed to be uncovered its powerful ability of tracing underground petroleum leakages.

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“…In prior works (Bradshaw et al, 1982;Matsumi et al, 2005) where 10 Hz lasers with much higher pulse energies were used, such that the typical rate of photons arriving at the detector is much higher than the laser repetition rate, single-photon counting was precluded and noisier analog signal conditioning electronic systems were required. In the present system, single-photon counting is possible, but the instrument response becomes noticeably nonlinear when the signal rate becomes a significant fraction of the laser repetition rate.…”

Section: Linearitymentioning

confidence: 99%

“…A detection limit of 4 ppt for 20 min of integration was stated; however, no measurements in the atmosphere were reported. Matsumi et al (2005) used the doubled output of an optical parametric oscillator pumped by a frequency-tripled 10 Hz Nd + YAG to achieve 10 mW of output at 220 nm. Fluores- Figure 1.…”

Section: Introductionmentioning

confidence: 99%

A laser-induced fluorescence instrument for aircraft measurements of sulfur dioxide in the upper troposphere and lower stratosphere

et al. 2016

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Abstract. This work describes the development and testing of a new instrument for in situ measurements of sulfur dioxide (SO 2 ) on airborne platforms in the upper troposphere and lower stratosphere (UT-LS). The instrument is based on the laser-induced fluorescence technique and uses the fifth harmonic of a tunable fiber-amplified semiconductor diode laser system at 1084.5 nm to excite SO 2 at 216.9 nm. Sensitivity and background checks are achieved in flight by additions of SO 2 calibration gas and zero air, respectively. Aircraft demonstration was performed during the NASA VolcanoPlume Investigation Readiness and Gas-Phase and Aerosol Sulfur (VIRGAS) experiment, which was a series of flights using the NASA WB-57F during October 2015 based at Ellington Field and Harlingen, Texas. During these flights, the instrument successfully measured SO 2 in the UT-LS at background (non-volcanic) conditions with a precision of 2 ppt at 10 s and an overall uncertainty determined primarily by instrument drifts of ±(16 % + 0.9 ppt).

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Laser-induced fluorescence instrument for measuring atmospheric SO2

Cited by 22 publications

References 23 publications

Development Trends in Air Pollution with Sulphur Dioxides in Area of Šaľa

Development Trends in Air Pollution with Sulphur Dioxides in Area of Šaľa

Fluorescence Characteristic Spectra of Domestic Fuel Products through Laser Induced Fluorescence Detection

A laser-induced fluorescence instrument for aircraft measurements of sulfur dioxide in the upper troposphere and lower stratosphere

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