E-Locus - Institutional Repository of the University of Crete - Μελέτη της παρουσίας φθαλικών εστέρων σε εσωτερικούς χώρους με τη χρήση αέριας χρωματογραφίας-φασματομετρίας μάζας

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Identifier

000369987

Title

Μελέτη της παρουσίας φθαλικών εστέρων σε εσωτερικούς χώρους με τη χρήση αέριας χρωματογραφίας-φασματομετρίας μάζας

Alternative Title

Study of the presence of phthalates in indoor environments with use of gas chromatography-mass spectrometry

Author

Περράκη, Αντωνία Διομ.

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Στεφάνου, Ευριπίδης

Abstract

Phthalic acid esters (PAEs) are common plasticizers and they are used in a wide variety of products. They have been recognized as major indoor pollutants and they are responsible for endocrine disruption and other impacts on human health. The purpose of this study was to develop an appropriate methodology for the qualification and quantification of phthalic acid esters in indoor air samples (homes and cars) using gas chromatography-mass spectrometry (GC-MS). Since high levels of phthalates have been reported in blank samples, this study focused on eliminating contamination during sample treatment. The developed method was used to quantify PAEs (phthalic acid esters) in samples collected from indoor environments (residences and cars). Moreover, two samples of settled dust and outdoor air samples were analyzed according to the above developed analytical method. The greater abundance in homes presented DEP (Diethyl phthalate) (484 – 1.756 ng/m³ conc. range) and DiBP (Diisobutyl phthalate) (107 -5.499 ng/m³ conc. range). The average contribution of DEP and DiBP to ΣPAE (sum of seven PAE congeners) was 52% and 29%, respectively. Similar distribution of phthalate esters was determined in car’s interior, where DEP and DiBP contributed to ΣPAE at 64% and 20%, respectively. The concentration range of the same phthalates was 237 – 11.449 ng/m3 for DEP and 197 – 2.288 ng/m3 for DiBP. Different distribution of phthalate esters was observed in settled dust from homes interior, where DEHP was the most abundant member among PAE group, with an average contribution of 79% to ΣPAE. Furthermore, ambient concentration of phthalates were determined in surrounding outdoor air of homes and compared with the concentrations in their respective interiors. In all cases outdoor concentrations were about 14 - 20 times lower than the corresponding indoor levels. Based on concentration levels determined in indoor and outdoor samples, as well as in settled dust, total daily intake of phthalate esters due to inhalation was estimated. The average daily intake through inhalation was 65 μg/day and constituted the 5% of total daily intake.

Language

Greek

Subject

Gas phase sampling

Phthalic and esters

Αέρια χρωματογραφία-φασματομετρία μάζας

Δειγματολειψία αέριων δειγμάτων

Εσωτερικοί χώροι

Φθαλικοί εστέρες

Issue date

2011-10-25

Collection