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141.
Martin Spray Caroline Saunders David Pearce Ian Thompson Patsy Healey 《Journal of Environmental Planning and Management》1994,37(1):117-122
Ecological Economics: The Science and Management of Sustainability
R. Costanza (Ed.)
New York, Columbia, 1991, 515 pp.
Environmental Auditing: The Challenge of the 1990s
Banff Centre for Management
Calgary, University of Calgary Press, 1992, 236 pp, pb.
Interpreting Nature: Cultural Constructions of the Environment
I. G. Simmons
London, Routledge, 1993, 200 pp., £40 hb, £12.99 pb 相似文献
142.
Christopher S. Jones Caroline A. Davis Chad W. Drake Keith E. Schilling Samuel H.P. Debionne Daniel W. Gilles Ibrahim Demir Larry J. Weber 《Journal of the American Water Resources Association》2018,54(2):471-486
Various techniques exist to estimate stream nitrate loads when measured concentration data are sparse. The inherent uncertainty associated with load estimation, however, makes tracking progress toward water quality goals more difficult. We used high‐frequency, in situ nitrate sensors strategically deployed across the agricultural state of Iowa to evaluate 2016 stream concentrations at 60 sites and loads at 35 sites. The generated data, collected at an average of 225 days per site, show daily average nitrate‐N yields ranging from 12 to 198 g/ha, with annual yields as high as 53 kg/ha from the intensely drained Des Moines Lobe. Thirteen of the sites that capture water from 82.5% of Iowa's area show statewide nitrate‐N loading in 2016 totaled 477 million kg, or 41% of the load delivered to the Mississippi–Atchafalaya River Basin (MARB). Considering the substantial private and public investment being made to reduce nitrate loading in many states within the MARB, networks of continuous, in situ measurement devices as described here can inform efforts to track year‐to‐year changes in nitrate load related to weather and conservation implementation. Nitrate and other data from the sensor network described in this study are made publicly available in real time through the Iowa Water Quality Information System. 相似文献
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Alessandra P. Vargas Diego Alves Caroline Wagner Thais Posser Robson Luiz Puntel 《Chemistry and Ecology》2013,29(4):355-364
Heavy metal contamination of the environment is a public health problem and research to develop new tools for monitoring the environmental impact of these elements is necessary. This study describes the preparation of a rhodamine-based probe 1 and its potential applications for detecting mercuric ion [Hg(II)] in samples from a nutrition media containing Salvinia auriculata. It was observed that an excess of probe 1 led to quenching in the fluorescence/absorption response, which was evidenced by a decrease in the signal when the stoichiometry differed from 1:1. Consequently, this probe is not suitable for quantitative analysis of Hg(II). Also, probe 1 reacts with methylmercury (MeHg) with different stoichiometry than that observed for Hg(II). These results indicate the potential application of probe 1 for qualitative detection of Hg(II) and MeHg in environmental samples. 相似文献
148.
Carine Julcour Lebigue Caroline Andriantsiferana Catherine Ayral Elham Mohamed Anne-Marie Wilhelm Henri Delmas Laurence Le Coq Claire Gerente Karl M. Smith Suangusa Pullket Geoffrey D. Fowler Nigel J.D. Graham 《Journal of environmental management》2010,91(12):2432-2439
This paper describes a preliminary evaluation of the performance of carbonaceous materials prepared from sewage sludges (SBCMs) in a hybrid water treatment process based on adsorption and catalytic wet air oxidation; phenol was used as the model pollutant. Three different sewage sludges were treated by either carbonisation or steam activation, and the physico-chemical properties of the resultant carbonaceous materials (e.g. hardness, BET surface area, ash and elemental content, surface chemistry) were evaluated and compared with a commercial reference activated carbon (PICA F22). The adsorption capacity for phenol of the SBCMs was greater than suggested by their BET surface area, but less than F22; a steam activated, dewatered raw sludge (SA_DRAW) had the greatest adsorption capacity of the SBCMs in the investigated range of concentrations (<0.05 mol L?1). In batch oxidation tests, the SBCMs demonstrated catalytic behaviour arising from their substrate adsorptivity and metal content. Recycling of SA_DRAW in successive oxidations led to significant structural attrition and a hardened SA_DRAW was evaluated, but found to be unsatisfactory during the oxidation step. In a combined adsorption–oxidation sequence, both the PICA carbon and a selected SBCM showed deterioration in phenol adsorption after oxidative regeneration, but a steady state performance was reached after 2 or 3 cycles. 相似文献
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Pesticide Risk Indicators: Unidentified Inert Ingredients Compromise Their Integrity and Utility 总被引:1,自引:0,他引:1
Pesticide Risk Indicators (PRIs) are widely used to evaluate and compare the potential health and environmental risks of pesticide
use and to guide pest control policies and practices. They are applied to agricultural, landscape and structural pest management
by governmental agencies, private institutions and individuals. PRIs typically assess only the potential risks associated
with the active ingredients because, with few exceptions, pesticide manufacturers disclose only the identity of the active
ingredients which generally comprise only a minor portion of pesticide products. We show that when inert ingredients are identified
and assessed by the same process as the active ingredient, the product specific risk can be much greater than that calculated
for the active ingredient alone. To maintain transparency in risk assessment, all those who develop and apply PRIs or make
decisions based on their output, should clearly disclose and discuss the limitations of the method. 相似文献