Capillary electrophoresis of inorganic anions

Kaniansky, Dušan; Masár, Marián; Marák, Jozef; Bodor, Róbert

doi:10.1016/s0021-9673(98)00789-4

Cited by 142 publications

(87 citation statements)

References 241 publications

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“…Oneforth filter sample was extracted in 5 ml of distillated water by ultrasonic agitation for 30 min, and then the extract was filtered. CE methodic details are described elsewhere (Kaniansky et al, 1999 Individual particles were examined using the LEO 1430-vp (Karl Zeiss) field emission scanning electron microscope with a spatial resolution of 7 nm equipped with an Oxford energy dispersive detector INCA. Energy dispersive X-ray spectroscopy spectra for Z elements (Z ≥ 5) were recorded in SEM image mode and then quantified by means of a method that relates the measured X-ray intensity to the elemental concentration, using calculated equivalent X-ray intensities of corresponding elements.…”

Section: Methodsmentioning

confidence: 99%

Microstructure and Chemical Composition of Diesel and Biodiesel Particle Exhaust

Popovicheva

Kireeva

Steiner

et al. 2014

Aerosol Air Qual. Res.

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The complexity and large variability of transport-emitted aerosols leads to necessity of comprehensive characterization of their physico-chemical and toxicological properties, remaining great uncertainties in health effect assessments. Particles produced by combustion of fossil diesel (B0), 20% rapeseed methyl ester in fossil diesel (B20), and pure rapeseed methyl ester (B100) were sampled from exhaust of an Opel Astra diesel engine using sulfated ash, phosphorous and sulfur (SAPS) lube oil with low and high ash content. Microscopic and chemical characterization is performed to quantify the common and specific properties of diesel/biodiesel exhausts. Hydrophobic saturated aliphatic dominate diesel particle chemistry. Oxygen and nitrogen-containing functionalities are specific for more hydrophilic biodiesel particles. A full range of chemical species for individual particles is grouped by clustering technique combined with water-soluble ion measurements. Analysis of group abundance shows carbonaceous particles (soot externally mixed with inorganic salts) and inorganic fly ash (metal oxides) in a structure of exhaust, in correlation with inorganic contaminations in fuel and lube oil. Quantification of particle types in terms of physicochemical relevance supports the identification of groups which may act as biomicromarkers discriminating between diesel and biofuel exhaust and micromarkers of using high ash lube oil, thus providing a basis for correlative toxicological assessment of diesel/biofuel engine emissions.

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Section: Methodsmentioning

confidence: 99%

Microstructure and Chemical Composition of Diesel and Biodiesel Particle Exhaust

Popovicheva

Kireeva

Steiner

et al. 2014

Aerosol Air Qual. Res.

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“…The analytical uncertainty for potassium ions was better than 5%, while the detection limit was 2 ng m -3 . In case of the BB source emissions, the inorganic anions and cations were measured by capillary electrophoresis (CE) with UV detection (Kaniansky et al, 1999), using a Capel 103 system (Lumex, Russia). One-fourth filter samples were extracted in 5 mL distillated water by ultrasonic agitation for 45 min, followed by filtration of the extract solutions.…”

Section: Bulk Analysesmentioning

confidence: 99%

Impact of Smoke Intensity on Size-Resolved Aerosol Composition and Microstructure during the Biomass Burning Season in Northwest Vietnam

Popovicheva

Engling

Diapouli

et al. 2016

Aerosol Air Qual. Res.

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Aerosol particles significantly impact the regional environment, including climate change, specifically in periods of extensive biomass burning. The major agricultural and domestic combustion emission sources were assessed in nearsource and ambient monitoring campaigns in northwestern Vietnam during the dry season. The composition and microstructure of on-field burning and cooking emissions were analyzed with a variety of techniques. A wide range of observed PM 2.5 mass concentrations was categorized according to the smoke level, supported by the evolution of carbon fractions (OC and EC) as well as ionic species and molecular tracers (K + , levoglucosan, and mannosan). The OC/EC and individual organic compound ratios on days with high smoke levels indicate smoldering combustion of softwood and other local biomass species, impacting aerosol composition at the regional level. Acid and non-acid carbonyls, carboxylates, and aliphatic carbon functionalities in the PM 2.5 size fraction evolved with increasing smoke intensity, together with carbonates in coarse (PM 1-2.5 and PM 2.5-10 ) size fractions, indicating a large impact of smoke emissions and soil lifted up by the intense fires. Biomass burning influence increased the abundance of soot and organic particles in the submicron fraction from 12% at low to 59% and 68% at moderate and high smoke levels, respectively. Smoke micromarkers of local biomass burning source emissions determined the microstructure of ambient aerosols representative for northern Southeast Asia.

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“…[265]) and appropriate concentration are essential for separation performance (reviewed in refs. [266] and [250]). For example, inorganic anions including NO 2 − and NO 3 − can be efficiently separated in basal electrolytes with addition of chromate [267], pyromellitic acid [268] and salicylate [269].…”

Section: 22mentioning

confidence: 98%

“…This sensitivity was sufficient to quantify nitrate and nitrite in the mammalian brain extracts, but was insufficient to detect the nitrite ion in biological fluids with apparently low nitrite content. Other bioanalytical examples and improvements of this technique have been reported subsequently [250][251][252][253][254][255][256][257][258][259][260][261].…”

Section: Direct Uv Absorbance Detection-directmentioning

confidence: 99%

Bioanalytical profile of the l-arginine/nitric oxide pathway and its evaluation by capillary electrophoresis

Boudko

2007

Journal of Chromatography B

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This review briefly summarizes recent progress in fundamental understanding and analytical profiling of the L-arginine/nitric oxide (NO) pathway. It focuses on key analytical references of NO actions and on the experimental acquisition of these references in vivo, with capillary electrophoresis (CE) and high-performance capillary electrophoresis (HPCE) comprising one of the most flexible and technologically promising analytical platform for comprehensive high-resolution profiling of NO-related metabolites. Second aim of this review is to express demands and bridge efforts of experimental biologists, medical professionals and chemical analysis-oriented scientists who strive to understand evolution and physiological roles of NO and to develop analytical methods for use in biology and medicine.

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Capillary electrophoresis of inorganic anions

Cited by 142 publications

References 241 publications

Microstructure and Chemical Composition of Diesel and Biodiesel Particle Exhaust

Microstructure and Chemical Composition of Diesel and Biodiesel Particle Exhaust

Impact of Smoke Intensity on Size-Resolved Aerosol Composition and Microstructure during the Biomass Burning Season in Northwest Vietnam

Bioanalytical profile of the l-arginine/nitric oxide pathway and its evaluation by capillary electrophoresis

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