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Environmental Chemistry

Environmental Chemistry

Environmental Chemistry publishes papers reporting chemistry that enhances our understanding of the environment including air, water, soil, sediments, and biota. Read more about the journalMore

Editor-in-Chief: Kevin Francesconi

Current Issue

Environmental Chemistry

Volume 14 Number 1 2017

EN16070Heteroagglomeration of nanosilver with colloidal SiO2 and clay

Sébastien Maillette, Caroline Peyrot, Tapas Purkait, Muhammad Iqbal, Jonathan G. C. Veinot and Kevin J. Wilkinson
pp. 1-8

Environmental context. The fate of nanomaterials in the environment is related to their colloidal stability. Although numerous studies have examined their homoagglomeration, their low concentration and the presence of high concentrations of natural particles implies that heteroagglomeration rather than homoagglomeration is likely to occur under natural conditions. In this paper, two state-of-the art analytical techniques were used to identify the conditions under which nanosilver was most likely to form heteroagglomerates in natural waters.

EN16049Carbon and nitrogen dynamics in decaying wood: paleoenvironmental implications

Romain Tramoy, Mathieu Sebilo, Thanh Thuy Nguyen Tu and Johann Schnyder
pp. 9-18

Environmental context. Carbon and nitrogen isotopes in terrestrial organic matter are widely used for reconstructing past environments, but organic matter is exposed to degradation as soon as it is deposited during what is called early diagenesis. This study explores the effects of this process on organic carbon and nitrogen isotopes, and concludes that it homogenises an environmental signal by integrating all their components. Thus, early diagenesis may not preclude paleoenvironmental reconstructions.

Environmental context. Nitrous acid (HONO) has long been recognized as an important atmospheric pollutant, with the reaction of HOSO + NO2 being a source of HONO. We explore the effects of an additional water or ammonia molecule on this reaction. Calculations show that the ammonia molecule has a more effective role than the water molecule in assisting the reaction.

EN16039PEST-ORCHESTRA, a tool for optimising advanced ion-binding model parameters: derivation of NICA-Donnan model parameters for humic substances reactivity

Noémie Janot, José Paulo Pinheiro, Wander Gustavo Botero, Johannes C. L. Meeussen and Jan E. Groenenberg
pp. 31-38

Environmental context. The environmental behaviour of trace metals in soils and waters largely depends on the chemical form (speciation) of the metals. Speciation software programs combining models for the binding of metals to soil and sediment constituents are powerful tools in environmental risk assessment. This paper describes a new combination of speciation software with a fitting program to optimise geochemical model parameters that describes proton and metal binding to humic substances.

EN16112Vermiculite as efficient sorbent of CeIII and CeIV

Zdeněk Klika, Jana Seidlerová, Ivan Kolomazník and Marianna Hundáková
pp. 39-47

Environmental context. Cerium, a Technology Critical Element with many technical, agricultural, and medicinal applications, is increasingly being discharged to the environment. One of the best ways to remove cerium from wastes is its fixation into inexpensive bulk material such as vermiculite. This paper investigates the mechanism of CeIII and CeIV uptake and capture by vermiculite in neutral and acidic aqueous solutions.

Environmental context. Eutrophication caused by excessive inputs of phosphorus is a prevalent global environmental problem. Reactive phosphorus released from sediments was measured by two new in situ passive sampling techniques capable of high-resolution measurements of phosphorus concentration. The methods provide the scientific evidence for solving the problems associated with deteriorating surface water quality.

Environmental context. Terrestrial environments receiving trace metal contaminants are often impacted by more than one metal. This study demonstrates the adaptation of an ion-exchange technique to simultaneously obtain Cu2+, Ni2+ and Zn2+ activities in soil extracts. These measurements can be used to better understand and predict the behaviour and bioavailability of soil metals in metal–mixture contamination scenarios.

EN16038Insights into natural organic matter and pesticide characterisation and distribution in the Rhone River

Danielle L. Slomberg, Patrick Ollivier, Olivier Radakovitch, Nicole Baran, Nicole Sani-Kast, Auguste Bruchet, Martin Scheringer and Jérôme Labille
pp. 64-73

Environmental context. Natural organic matter in surface waters is a transport vector for environmental pollutants with both its concentration and composition influencing pollutant fate. Characterisation of organic matter in surface waters, crucial to understanding pollutant transport, should also account for spatial variation along the water source. The present work characterises the natural organic matter in the Rhone River and describes the distributions of various pesticides and metabolites along the river.

Online Early

The peer-reviewed and edited version of record published online before inclusion in an issue

Published online 11 January 2017

EN16174Vanadate complexation to ferrihydrite: X-ray absorption spectroscopy and CD-MUSIC modelling

Maja A. Larsson, Ingmar Persson, Carin Sjöstedt and Jon Petter Gustafsson

Environmental context. Vanadium, a metal pollutant from fossil fuels and slags, may be toxic, thereby necessitating an understanding of its environmental chemistry. One important factor that controls the mobility and bioavailability of vanadium is its binding to iron oxides. This study focuses on the characterization and modelling of vanadium adsorption onto ferrihydrite. The new model can be used to simulate the transport and bioavailability of vanadium in the environment.

Published online 11 January 2017

EN16136Ion exchange technique (IET) to characterise Ag+ exposure in soil extracts contaminated with engineered silver nanoparticles

Dina Schwertfeger, Jessica Velicogna, Alexander Jesmer, Heather McShane, Richard Scroggins and Juliska Princz

Environmental context. Biosolid-amended soils are likely sinks for manufactured silver nanoparticles, the environmental toxicity of which is believed to be related to the release and accumulation of Ag+ ions. This study demonstrates how an ion exchange technique can be applied to soil extracts to provide Ag+ measurements at low, environmentally relevant levels. The technique is a valuable addition to existing analytical methods for tracking the behaviour of Ag nanoparticles and Ag+ ions in the terrestrial environment.

Published online 20 December 2016

EN16152Atmospheric short-chain-chlorinated paraffins in Melbourne, Australia – first extensive Southern Hemisphere observations

Robert W. Gillett, Ian E. Galbally, Melita D. Keywood, Jennifer C. Powell, Gavin Stevenson, Alan Yates and Anders R. Borgen

Environmental context. This study presents the first comprehensive set of ambient atmospheric concentrations of short-chain-chlorinated paraffins in the southern hemisphere. The data show a seasonal cycle with a summer maximum and a winter minimum. The seasonal cycle is consistent with temperature dependence of the vapour pressure of the short-chain-chlorinated paraffins resulting in partitioning between the atmosphere and other reservoirs with a secondary modulation by soil moisture.

Published online 15 December 2016

EN16144The decreasing aggregation of nanoscale zero-valent iron induced by trivalent chromium

Danlie Jiang, Xialin Hu, Rui Wang, Yujing Wang and Daqiang Yin

Environmental context. Nanoscale zero-valent iron is a promising material for environmental engineering and groundwater remediation. However, the environmental behaviour and fate of nanoscale iron that is essential for applications and risk assessment is still uncertain. We report a study on the aggregation behaviour and mobility of nanoscale iron in the aquatic environment using colloidal chemical methods.

Published online 14 December 2016

EN16137On-site determination of bisphenol A in river water by a novel solid-state electrochemiluminescence quenching sensor

Xiaoying Wang, Yijie Wang, Meng Jiang, Yanqun Shan and Xiaobing Wang

Environmental context. Bisphenol A is an endocrine disruptor, which may migrate and transfer to the environment where it presents a potential risk to the health of humans and animals. Herein, we demonstrate that electrospun nanofibers could be used to develop a highly efficient solid-state quenching sensor for on-site determination of bisphenol A in river water samples. The strategy has great potential for routine environmental analyses.

Environmental context. Secondary organic aerosol, formed by oxidation of volatile precursors such as monoterpenes, is a major contributor to the total atmospheric organic aerosol. We focus on the online mass spectrometric analysis of the aerosol generated by oxidation products of four major monoterpenes in an environmental chamber. Numerous important monoterpene oxidation products were clearly observed and provided a direct comparison of the formation of biogenic secondary organic aerosols.

Environmental context. Dissolved organic matter (DOM) plays an important role in influencing the migration and ultimate fate of metals. Different sources of pollution resulted in changes in the structure of sediment DOM in Lake Wuliangsuhai. We investigate the binding properties of DOM with CuII and HgII using fluorescence quenching combined with two-dimensional correlation spectroscopy (2D-COS) in order to demonstrate the influence of different sources of DOM on metals.

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EC expanding to 8 issues in 2017