Vanadium and nickel in dustfall as indicators of power plant pollution

Ganor, E.; Altshuller, S.; Foner, H. A.; Brenner, S.; Gabbay, J.

doi:10.1007/bf00279270

Cited by 29 publications

(15 citation statements)

References 4 publications

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“…We note that 54 % of Ca was loaded in this factor, as expected, since OC was found to be correlated with Ca. No significant crude oil tracers (Ni and V) appeared in the factor, indicating that this factor was not related to oil combustion (Ganor et al, 1988). The CWT analysis suggested that high OC and EC coming from the shoreline of the Persian Gulf may be associated with industrial emissions, including refineries, gas flares in oil fields, and cement production.…”

Section: Pmf Analysismentioning

confidence: 95%

“…The third factor contained almost all of the V and a large fraction of Ni (> 60 %), as well as some crustal elements and OC. V and Ni and their ratios have been suggested as markers of emissions from oil-fired power plants (Ganor et al, 1988). Barwise (1990) found that the highest V / Ni ratios (> 1) among oil samples that they characterized were associ- ated with Abu Dhabi and Suez oils, as contrasted with samples from the North Sea, China, Indonesia, and Australia, reflecting geological differences.…”

Section: Pmf Analysismentioning

confidence: 99%

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Sources of PM<sub>2.5</sub> carbonaceous aerosol in Riyadh, Saudi Arabia

et al. 2018

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Abstract. Knowledge of the sources of carbonaceous aerosol affecting air quality in Riyadh, Saudi Arabia, is limited but needed for the development of pollution control strategies. We conducted sampling of PM 2.5 from April to September 2012 at various sites in the city and used a thermo-optical semi-continuous method to quantify the organic carbon (OC) and elemental carbon (EC) concentrations. The average OC and EC concentrations were 4.7 ± 4.4 and 2.1 ± 2.5 µg m −3 , respectively, during this period. Both OC and EC concentrations had strong diurnal variations, with peaks at 06:00-08:00 LT and 20:00-22:00 LT, attributed to the combined effect of increased vehicle emissions during rush hour and the shallow boundary layer in the early morning and at night. This finding suggested a significant influence of local vehicular emissions on OC and EC. The OC / EC ratio in primary emissions was estimated to be 1.01, close to documented values for diesel emissions. Estimated primary organic carbon (POC) and secondary organic carbon (SOC) concentrations were comparable, with average concentrations of 2.0 ± 2.4 and 2.8 ± 3.4 µg m −3 , respectively.We also collected 24 h samples of PM 10 onto quartz microfiber filters and analyzed these for an array of metals by inductively coupled plasma atomic emission spectroscopy (ICP-AES). Total OC was correlated with Ca (R 2 of 0.63), suggesting that OC precursors and Ca may have similar sources, and the possibility that they underwent similar atmospheric processing. In addition to a ubiquitous dust source, Ca is emitted during desalting processes in the numerous refineries in the region and from cement kilns, suggesting these sources may also contribute to observed OC concentrations in Riyadh. Concentration weighted trajectory (CWT) analysis showed that high OC and EC concentrations were associated with air masses arriving from the Persian Gulf and the region around Baghdad, locations with high densities of oil fields and refineries as well as a large Saudi Arabian cement plant. We further applied positive matrix factorization to the aligned dataset of EC, OC, and metal concentrations (Al, Ca, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and V). Three factors were derived and were proposed to be associated with oil combustion, industrial emissions (Pb based), and a combined source from oil fields, cement production, and local vehicular emissions. The dominant OC and EC source was the combined source, contributing 3.9 µg m −3 (80 %) to observed OC and 1.9 µg m −3 (92 %) to observed EC.

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Section: Pmf Analysismentioning

confidence: 95%

Section: Pmf Analysismentioning

confidence: 99%

Sources of PM<sub>2.5</sub> carbonaceous aerosol in Riyadh, Saudi Arabia

et al. 2018

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“…The combustion of No.6 fuel oil is an anthropogenic source of metal emissions to the atmosphere (Anderson et al, 1978;Galloway et al, 1982;Ganor et al, 1988;Juichang et al, 1995). Although the emissions of Ni and Cr from electric utility and industrial boiler sources have been measured (Chu et al, 1994;Miller et al, 1996), the combustion transformations and chemical speciation of these metals have not been adequately investigated.…”

Section: Introductionmentioning

confidence: 98%

Nickel and Chromium Speciation of Residual Oil Combustion Ash

Galbreath

Zygarlicke

Toman

et al. 1998

Combustion Science and Technology

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Ash from a low-and high-S (0.33 wt% and 1.80wt% S, respectively) residual oil was produced using a laboratory-scale combustion system at excess O 2 concentrations of $ I and 2 or 3 mol%. High-S ashes are distinguished from low-S ashes by an abundance of (Na, K)x v~+ vtx 0" (0.90> x > 0.54) and lack of (Na, Kj,SO. crystals. Discrete phases of Ni or Cr were not detected using SEM and XRD, even though these metals are relatively abundant -\.5 to 5.5 wt% and 0.08 to 0.1 wt%, respectively. Ni and Cr K-edge XAFS s~ectroscopy analyses indicate that NiSO. and Cr2(SO.h and not the more toxic Ni,S2 and Cr· forms predominate in the ashes. Thermodynamic modeling results support the empirical results in that NiSO•. XH 2 0 and Cr2(SO.h are predicted to be stable low-temperature species in both lowand high-S residual oil ashes produced at S 3 mol% excess O 2,

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“…Further comparative data are provided by Gonzalez and Pignata (1994) who detected a decrease of the ratio chlorophyll a/phaeophytin a in transplanted thalli of Punctelia subrudecta upon exposure to contaminated urban air in sites in Cordoba, Argentina. The correlations of S, Ni, and V obtained in the thalli of R. duriaei in the present study suggest a common source of emission of these elements, S, Ni, and V were described as indicators of pollution emitted by power plants in Israel (Foner and Ganor, 1986;Ganor et al, 1988;. The correlation of S, Ni, and V obtained in the present study corresponds with the correlation coefficients in total suspended matter obtained in Tel Aviv, around a heavy fuel oil power plant, (Foner and Ganor (1986).…”

Section: Figmentioning

confidence: 88%