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Publication Phylogeography of the invasive cyanobacterium Cylindrospermopsis raciborskii(2003) Neilan, B. A.; Saker, Martin L.; Fastner, J.; Törökné, A.; Burns, P. B.Publication Umweltbelastungen von Kindern in Deutschland(2007) UmweltbundesamtPublication Use of sex ratio of bream (Abramis brama L.) as an indicator of endocrine effects: Results from the German Environmental Specimen Bank(2011)In field monitoring, sex ratio as an endpoint of possible endocrine effects at population level can only be recorded as the deviation from the natural sex ratio. Unfortunately, data on natural sex ratios of many species cannot be used to control for such effects. This also applies to bream (Abramis bramaL.), an important fish species in passive biomonitoring. Here we show that in natural bream populations the sex ratio decreases with increasing age. Age class specific correction coefficients were derived to eliminate age-dependency of the sex ratio.
Quelle: http://www.sciencedirect.com/science/article/pii/S1470160X11000604Publication Levels and predictors of urinary nickel concentrations of children in Germany: Results from the German Environmental Survey on children (GerES IV)(2013)Human biomonitoring of nickel has gained interest in environmental medicine due to its wide distribution in the environment and its allergenic potential. There are indications that the prevalence of nickel sensitization in children is increased by nickel exposure and that oral uptake of nickel can exacerbate nickel dermatitis in nickel-sensitive individuals. Urinary nickel measurement is a good indicator of exposure. However, data on nickel levels in urine of children are rare. For the first time, the German Environmental Survey on children (GerES IV) 2003-2006 provided representative data to describe the internal nickel exposure of children aged 3-14 years in Germany. Nickel was measured after enrichment in the organic phase of urine by graphite furnace atomic absorption spectrometry with Zeeman background correction. Nickel levels (n = 1576) ranged from <0.5 to 15 ĆÊg/l. Geometric mean was 1.26 ĆÊg/l. Multivariate regression analysis showed that gender, age, socio-economic status, being overweighted, consumption of hazelnut spread, nuts, cereals, chocolate and urinary creatinine were significant predictors for urinary nickel excretion of children who do not smoke. 20.2% of the variance could be explained by these variables. With a contribution of 13.8% the urinary creatinine concentration was the most important predictor. No influence of nickel intake via drinking water and second hand smoke exposure was observed.Copyright ©2012 Published by Elsevier GmbH.Publication Reference values for lead, cadmium and mercury in the blood of adults from the metropolitan area of Sao Paulo, Brazil(2013)Human biomonitoring is an important tool for the evaluation of environmental exposure to contaminants. The data that are obtained from these studies might be compared to appropriate referencevalues(RVs) in aspecific population. The RVs were derived from the rounded valuesof the upper limit of the 95th confidence interval of the 95th percentile for lead(Pb), cadmium(Cd) and mercury(Hg) in bloodfrom adultsin the metropolitanareaof SaoPaulo(MASP), Brazil to investigate the association between bloodmetals and sociodemographic and lifestyle factors. Bloodsamples from 653 nonsmoking blood donors without occupational exposure to the studied metals were collected in 2006. Our evaluations distinguished ayounger group (18-39 years) and an older group (40-65 years). RVs in the younger group were 60 Ţg Pb/L and 4 Ţg Hg/L for men and 47 Ţg Pb/L and 4 Ţg Hg/L for women. RVs in the older group were 80 Ţg Pb/L and 5 Ţg Hg/L for men and 63 Ţg Pb/L and 6 Ţg Hg/L for women. The RV for Cd was 0.6 Ţg/L for adultsaged 18-65 years. Pb and Cd levels demonstrated asignificant association with sex and age. Male blood contained 50% more Pb, and the older group exhibited 23% more Pb. Fish consumption and amalgam fillings were primarily related to Hg levels. RVs for lead were similar to the Czech Republic and Germany but higher than the US population. The RV for Cd in Brazil was well below the RVs of these countries. The RVs for Hg in Brazil were similar to the US but higher than Germany and the Czech Republic.Copyright ©2012 Elsevier GmbH.