Semi-volatile organic compounds were monitored over a whole year, by collection of gas and particle phases every sixth day at a suburban site in Izmir, Turkey. Annual mean concentrations of 32 polychlorinated biphenyls (∑32PCBs) and 14 polycyclic aromatic hydrocarbons (∑14PAHs) were 348 pg/m(3) and 36 ng/m(3), respectively, while it was 273 pg/m(3) for endosulfan, the dominant compound among 23 organochlorine pesticides (OCPs). Monte Carlo simulation was applied to the USEPA exposure-risk models for the estimation of the population exposure and carcinogenic risk probability distributions for heating and non-heating periods. The estimated population risks associated with dermal contact and inhalation routes to ∑32PCBs, ∑14PAHs, and some of the targeted OCPs (α-hexachlorocyclohexane (α-HCH), β-hexachlorocyclohexane (β-HCH), heptachlor, heptachlor epoxide, α-chlordane (α-CHL), γ-chlordane (γ-CHL), and p,p'-dichlorodiphenyltrichloroethane (p,p'-DDT)) were in the ranges of 1.86 × 10(-16)-7.29 × 10(-9) and 1.38 × 10(-10)-4.07 × 10(-6), respectively. The inhalation 95th percentile risks for ∑32PCBs, ∑14PAHs, and OCPs were about 6, 3, and 4-7 orders of magnitude higher than those of dermal route, respectively. The 95th percentile inhalation risk for ∑32PCBs and OCPs in the non-heating period were 1.8- and 1.2-4.6 folds higher than in the heating period, respectively. In contrast, the 95th percentile risk levels for ∑14PAHs in the heating period were 4.3 times greater than that of non-heating period for inhalation, respectively. While risk levels associated with exposure to PCBs and OCPs did not exceed the acceptable level of 1 × 10(-6), it was exceeded for 47 % of the population associated with inhalation of PAHs with a maximum value of about 4 × 10(-6).

• MeSH
• chlordan analýza   MeSH
• chlorované uhlovodíky analýza   MeSH
• DDT analýza   MeSH
• endosulfan analýza   MeSH
• heptachlor analýza   MeSH
• hexachlorcyklohexan analýza   MeSH
• karcinogeny životního prostředí analýza   MeSH
• látky znečišťující vzduch analýza   MeSH
• lidé MeSH
• monitorování životního prostředí * MeSH
• pesticidy analýza   MeSH
• polychlorované bifenyly analýza   MeSH
• polycyklické aromatické uhlovodíky analýza   MeSH
• roční období * MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• Geografické názvy
• Turecko MeSH

A rapid method using programmed temperature vaporiser injection-low-pressure gas chromatography-high-resolution time-of-flight mass spectrometry (PTV-LP-GC-HR-TOF-MS) for the analysis of multiple pesticide residues in fruit-based baby food was developed. The fast and inexpensive buffered QuEChERS (quick, easy, cheap, effective, rugged, and safe) extraction method and "conventional" approach that employs ethyl acetate extraction followed by gel permeation chromatography (GPC) cleanup were employed for sample preparation. A PTV injector in solvent venting mode was used to reduce volume of acetonitrile and acetic acid (from the buffered QuEChERS extracts) that caused higher column bleed without their elimination. Otherwise, the time-to-digital converter would become saturated in HR-TOF-MS. For fast GC separation allowing analysis of 100 analytes within a 7 min runtime, both a high temperature programming rate and vacuum conditions in a megabore GC column were employed. The use of HR-TOF-MS allowed the unbiased identification and reliable quantification of target analytes through the application of a narrow mass window (0.02 Da) for extracting analyte ions and the availability of full spectral information even at very low levels. With only a few exceptions, the lowest calibration levels for the pesticides tested were

• MeSH
• aminoimidazolkarboxamid analogy a deriváty   analýza   MeSH
• analýza potravin metody   MeSH
• časové faktory MeSH
• endosulfan analýza   MeSH
• financování organizované MeSH
• hydantoiny analýza   MeSH
• isomerie MeSH
• kyselina octová chemie   MeSH
• ovoce chemie   MeSH
• plynová chromatografie s hmotnostně spektrometrickou detekcí metody   MeSH
• pufry MeSH
• reprodukovatelnost výsledků MeSH
• rezidua pesticidů analýza   izolace a purifikace   MeSH
• teplota MeSH
• tlak MeSH
• volatilizace MeSH