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A simple and environmentally friendly methodology for headspace solid-phase microextraction (HS-SPME) using a new fiber coated with polydimethylsiloxane-poly(vinyl alcohol) (PDMS/PVA) is reported for the trace determination of organochlorine (OCP) and organophosphorus (OPP) pesticides in herbal infusions of Passiflora L. by GC-ECD. The capacity of the PDMS/PVA coating for the pesticides was compared to that of commercial PDMS fibers, with advantageous results. The effects of parameters such as the sample ionic strength, dilution of the infusion, extraction temperature and time were investigated. The optimized conditions for the determination of OCP and OPP in Passiflora L. infusions were extraction time and temperature, respectively, of 38 min and 67.5 degrees C, with 5 min of sample/headspace equilibration time. The analytical curves for the range between 0.04 ng mL(-1) to 6 ng mL(-1) of each compound presented a good quality (correlation coefficients of 0.921 or better). The detection limits for the OCP and OPP in these matrices varied from 0.01 ng mL(-1) (beta-endosulfan) to 1.5 ng mL(-1) (malathion). The sensitivity of studied methodology was adequate, as well as its accuracy (78.7-91.5%) and precision (R.S.D. = 1.2-14.2%).

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The aim of this study was to investigate associations of sociodemographic, lifestyle, medical conditions, and caries experience with oral health-related quality of life (OHRQoL) in a large sample of adults with mental disorders. A sample of 753 adults diagnosed with schizophrenia or depression, who were users of 10 public mental health outpatient clinics located in the city of São Paulo, Brazil, participated in the study. Participants provided data on sociodemographic characteristics, psychiatric diagnosis, medication use, and health behaviors. Oral examinations to evaluate dental caries (using the decayed, missing, and filled teeth ([DMFT] index) and dental plaque (using the Silness-Löe plaque index) were conducted. Oral health-related quality of life was evaluated using the 14-item Oral Health Impact Profile (OHIP-14) questionnaire. Log-Poisson regression was used to evaluate associations between the outcome and independent variables. The prevalence of one or more OHIP-14 impacts occurring fairly often/often was 72.3%. Physical pain was the OHIP domain with the highest prevalence, followed by psychological discomfort. Multivariable analysis showed that higher prevalence of the reponses 'fairly often/often' in the OHIP-14 was associated with being female, aged 35 to 54 years, having a low family income, a diagnosis of depression, a smoking habit, and fewer than 20 teeth. Adults with mental disorders had a high prevalence of impacts on their OHRQoL, which were associated with caries experience, sociodemographic characteristics, type of psychiatric diagnosis, and behavioral risk indicators.