Raman spectra of inorganic ions

Degen, I. A.; Newman, G.A.

doi:10.1016/0584-8539(93)80110-v

Cited by 126 publications

(87 citation statements)

References 4 publications

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“…Spectral analyses were performed by comparison with spectra from an in-house library as well as commercially available spectral libraries (Degen and Newman 1993;Nyguist et al 1997). Spectra with fluorescence background signals of 30000 counts or more were affected by partial or complete saturation of the CCD detector and categorized as "high fluorescence" spectra.…”

Section: Acquisition and Analysis Of Raman Spectramentioning

confidence: 99%

Raman Microspectroscopic Analysis of Size-Resolved Atmospheric Aerosol Particle Samples Collected with an ELPI: Soot, Humic-Like Substances, and Inorganic Compounds

Ivleva

McKeon

Nießner

et al. 2007

Aerosol Science and Technology

133

151

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Raman microspectroscopy and mapping have been applied for the analysis of soot, humic-like substances (HULIS) and inorganic compounds in size resolved samples of air particulate matter collected with an electrical low pressure impactor (ELPI). Using several reference materials, we found that spectral parameters determined by curve fitting with five bands (G, D1-D4) enable a discrimination of soot and HULIS and provide information about the relative abundance and structural order of graphite-like carbon. In particular, the D1 band width exhibited a near-linear negative correlation with the ratio of apparent elemental carbon to total carbon in different types of soot.The ELPI samples of sub-micrometer atmospheric particles exhibited essentially the same Raman spectra and parameters as standard diesel soot. In winter samples this was also the case for larger particles with aerodynamic diameters up to 4 μm. Spring and autumn samples, however, exhibited increased D1 band widths and D3 band intensities, indicating a high prevalence of HULIS in the size range of 2-4 μm. In addition, various nitrates and sulfates (mostly NaNO 3 and (NH 4 ) 2 SO 4 ; some NH 4 NO 3 , Ca(NO 3 ) 2 , Na 2 SO 4 , and CaSO 4 ) and small amounts of CaCO 3 were detected. Different single-and multi-component spectra indicated the presence of externally and internally mixed particles. The relative abundance of different chemical components in different particle size ranges was quantified in mapping experiments (0-55% NaNO 3 , 1-15% (NH 4 ) 2 SO 4 , 10-45% soot/HULIS, 30-60% highly fluorescent organics). Overall, the results of this study demonstrate that Raman microspectroscopy and mapping can provide qualitative and quantitative information about the composition of ELPI aerosol samples.

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Section: Acquisition and Analysis Of Raman Spectramentioning

confidence: 99%

Raman Microspectroscopic Analysis of Size-Resolved Atmospheric Aerosol Particle Samples Collected with an ELPI: Soot, Humic-Like Substances, and Inorganic Compounds

Ivleva

McKeon

Nießner

et al. 2007

Aerosol Science and Technology

133

151

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“…SO , the vibrational stretching frequencies should not 4 change by more than a couple of percent depending on the counterion [10]. …”

mentioning

confidence: 99%

Raman spectroscopy studies on M2RuH6 where M=Ca, Sr and Eu

Hagemann

Moyer

2002

Journal of Alloys and Compounds

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Characterization of ternary and quaternary metal hydrides by Raman spectroscopy appears to be rather scarce due primarily to the decomposition of the metal hydrides by the energy of the laser excitation source. We report the results of some recent room temperature Raman measurements collected with a 2-10 mW 488 nm laser source for M RuH where M5Ca, Sr and Eu. The assignments from this 2 6 study are combined with existing vibrational data for other metal hydrides.

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“…Details are given in Table 1. According to reference spectra (Degen and Newman, 1993;Degen, 1997 The chemical compound KSCN is used in the printing industry and for photo development processes. While no printing press was located at the sampling site, some photo studios were located nearby.…”

Section: Resultsmentioning

confidence: 99%

Chemical Identification of Urban Air Particulates in the Environment of Pune City (India) By Raman Spectroscopy

Harpale

Ralegankar

Jadhav

et al. 2006

Aerosol Air Qual. Res.

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The Raman spectra of urban aerosols were obtained for the characterization of aerosols and a qualitative interpretation of the spectra is presented. An experiment was carried out using a double monochromator with a diffraction grating frequency of 1,800 grooves/mm, a diode laser with a 532-nm wavelength, and with a power source of 25 mW for excitation. The spectra exhibited the presence of various inorganic compounds, including carbonates, sulphates, persulphate of ammonium and potassium, nitrates of ammonium (NH 4 ), potassium and strontium, etc. as well as organic species dominated by the carbon group. In the environmental research, this kind of analytical capability is very useful for the chemical identification of atmospheric aerosol.

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Raman spectra of inorganic ions

Cited by 126 publications

References 4 publications

Raman Microspectroscopic Analysis of Size-Resolved Atmospheric Aerosol Particle Samples Collected with an ELPI: Soot, Humic-Like Substances, and Inorganic Compounds

Raman Microspectroscopic Analysis of Size-Resolved Atmospheric Aerosol Particle Samples Collected with an ELPI: Soot, Humic-Like Substances, and Inorganic Compounds

Raman spectroscopy studies on M2RuH6 where M=Ca, Sr and Eu

Chemical Identification of Urban Air Particulates in the Environment of Pune City (India) By Raman Spectroscopy

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