Analiza występowania pierwiastków śladowych w formie mobilnej frakcji respirabilnej pyłu (PM2,5) pobranego w otoczeniu elektrowni węglowej

• Autorzy: Zajusz-Zubek E. , Mainka A.

Warianty tytułu

EN

Analysis of trace elements in the mobile form of respirable fraction PM2.5 collected in the surroundings of power plant

• Języki publikacji: PL

Abstrakty

PL

W pracy przedstawiono wstępne wyniki badań występowania wybranych pierwiastków śladowych (As, Cd, Co, Cr, Pb, Sb i Se), należących do grupy HAPs (ang. Hazardous Air Pollutants), w formie biodostępnej frakcji respirabilnej (PM2,5). Odpowiednią frakcję pyłu pobrano w otoczeniu pracującej elektrowni węglowej opalanej węglem kamiennym. Analiza specjacyjna frakcji pyłu PM2,5 została przeprowadzona według zmodyfikowanego schematu Tessiera z wykorzystaniem ekstrakcji formy rozpuszczalnej w wodzie (Frakcja 1). Średnie stężenia pierwiastków badanych we frakcji rozpuszczalnej w wodzie utworzyły następujący szereg: Pb>Cr>As>Sb>Cd>Se>Co. Jest on zbliżony do szeregu otrzymanego w źródłach literaturowych.

EN

Research regarding environment and dust exposition conducted so far has been based on theoretical factors. These factors primarily concern the total content of heavy metals in suspended dust. However, there is a shortage of data on the specific chemical forms of trace elements. These forms condition the heavy metal threat on the environment and human health. Based on the results of chemical speciation, we can define the mobility of elements (including heavy metals) in the environment, that is, their bio-chemical activity during assimilation by organisms. The paper presents preliminary results of the occurrence of selected trace elements (As, Cd, Co, Cr, Pb, Sb and Se) that belong to the HAPs group (Hazardous Air Pollutants) in the PM2.5 water soluble form. The appropriate fraction of particulate matter was collected by Dekati PM10 Impactor in the surroundings of a working power plant that is fired with hard coal. The speciation analysis of PM2.5 fraction was conducted using a modified Tessier scheme. This procedure employs the extraction of a water soluble fraction (Fraction 1). The concentrations of elements were determined using the ICPMS technique. Measurements delivered data on the average concentration of respirable fraction PM2.5, which equaled 22.93 μg/m3. While conducting the research in the surroundings of a working power plant, a relatively high ratio of PM2.5 to TSP (83%) and to PM10 (88%) was found. Among the determined trace elements, the highest average total concentration in PM2.5 was found for Pb (82.17 ng/m3), while the lowest (less than 1 ng/m3) was found for Co. The highest average concentration in water soluble fraction F1 in PM2.5 was also found for Pb (12,97 ng/m3), while the lowest concentration (below 1 ng/m3) was found for Sb, Cd, Se and Co. The average concentrations of trace elements determined in the bioavailable fraction were found in a following order: Pb>Cr>As>Sb>Cd>Se>Co. This sequence is similar to the order received in the existing literature. In future, received data will assist in determining the forms of hazardous trace elements in total suspended particles (TSP), suspended dust (PM10) and in respirable fraction (PM2.5) in the surroundings of selected working power plants.

Słowa kluczowe

PL

analiza specjacyjna; PM2,5; metale ciężkie; elektrownia węglowa; zanieczyszczenia powietrza

EN

speciation analysis; PM2,5; heavy metals; power plant; air pollutants

• Wydawca: Wydawnictwo Politechniki Częstochowskiej
• Czasopismo: Inżynieria i Ochrona Środowiska
• Rocznik: 2015
• Tom: T. 18, nr 2
• Strony: 245--258
• Opis fizyczny: Bibliogr. 24 poz.

Twórcy

autor

Zajusz-Zubek E.

• Politechnika Śląska, Wydział Inżynierii Środowiska i Energetyki, Katedra Ochrony Powietrza, ul. Konarskiego 22B, 44-100 Gliwice

autor

Mainka A.

• Politechnika Śląska, Wydział Inżynierii Środowiska i Energetyki, Katedra Ochrony Powietrza, ul. Konarskiego 22B, 44-100 Gliwice

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