The current study examined the chronic toxicity of lead (Pb) to three invertebrate species: the cladoceran Ceriodaphnia dubia, the snail Lymnaea stagnalis and the rotifer Philodina rapida. The test media consisted of natural waters from across North America, varying in pertinent water chemistry parameters including dissolved organic carbon (DOC), calcium, pH and total CO(2). Chronic toxicity wa...

1 Geophysical Institute and Department of Chemistry, University of Alaska Fairbanks, Fairbanks, AK, 99775-6160, USA 2 School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, UK 3 National Institute of Water and Atmospheric Research, Private Bag 14–901, Wellington, New Zealand 4 British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK 5 McGill University...

Coupled carbon-water exchange of the Amazon rain forest, II. Comparison of predicted and observed seasonal exchange of energy, CO2, isoprene and ozone at a remote site in Rondônia E. Simon, F. X. Meixner, U. Rummel, L. Ganzeveld, C. Ammann, and J. Kesselmeier Biogeochemistry Dept., Max Planck Institute for Chemistry, Mainz, Germany Meteorologisches Observatorium Lindenberg, Deutscher Wetterdien...

and their multifunctional applications Kai Li,*ac Yuanyuan Liu,a Yuanyuan Li,b Qi Feng,a Hongwei Hou*a and Ben Zhong Tang*c a College of Chemistry and Molecular Engineering, Zhengzhou University, Henan 450001, P. R. China. b College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Henan 450001, P. R. China. c Department of Chemistry and Hong Kong Branch of C...

Ionic transport across bipolar membrane and adjacent Nernst layers V.I. Kovalchuk a, E.K. Zholkovskij a, E.V. Aksenenko b, F. Gonzalez-Caballero c,∗, S.S. Dukhin d a Institute of Biocolloid Chemistry, Ukrainian National Academy of Sciences, 42 Vernadsky Avenue, Kiev 03142, Ukraine b Institute of Colloid Chemistry & Chemistry of Water, Ukrainian National Academy of Sciences, 42 Vernadsky Avenue,...

A high-resolution emission inventory of primary pollutants for the Huabei region, China B. Zhao, P. Wang, J. Z. Ma, S. Zhu, A. Pozzer, and W. Li Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing, China Energy, Environment and Water Research Centre, The Cyprus Institute, Nicosia, Cyprus Department of Atmospheric Chemistry, Max Planck Institute for Chem...

Nitrate analysis in water is one of the most frequently applied methods in environmental chemistry. Current methods for nitrate are generally based on toxic substances. Here, we show that a viable alternative method is to use the enzyme nitrate reductase. The key to applying this Green Chemistry solution for nitrate analysis is plentiful, inexpensive, analytical grade enzyme. We demonstrate tha...

Water quality managers analyze data collected in the field to assess environmental conditions and enact policy based on water quality impairments identified in this analysis. Water quality is often based on measures of water chemistry and the health of biological communities. There are many factors spread across the landscape that contribute to water quality. This adds a spatial dimension to th...

We tested the hypothesis that the physical and chemical processes acting in sea grass habitats of the lower Chesapeake Bay are spatially structured and that dissolved elemental chemistry of sea grass–habitat surface waters have their own unique identity. We sampled surface waters from July to September 2001 in five sea grass habitats of the lower bay: Potomac, Rappahannock, York, Island (Tangie...