abstract：:Three bench-scale rock filters containing 0.6 m of gravel were used in this investigation. Two of the filters were planted withSagittaria Iancifolia andScirpus validus, while the third filter was an unvegetated control filter. The wastewater directed through these systems was a synthetic mixture containing nutrient br...

journal_title：Environmental monitoring and assessment

authors： Skipper D,Tittlebaum M

更新日期：1993-08-01 00:00:00

abstract：:Urban forestry is a new science, with monitoring techniques that are still evolving. Tree inventory is most commonly practiced, but we are learning to better monitor the benefits and liabilities provided by urban trees. These results are often for political, social, and biological purposes. Although most monitoring is...

journal_title：Environmental monitoring and assessment

authors： Baker FA

更新日期：1993-07-01 00:00:00

abstract：:Environmental monitoring has been an ongoing activity on the U.S. Department of Energy's Hanford Site in southeastern Washington for almost 50 years. Objectives are to detect and assess potential impacts of Site operations on air, surface and ground waters, foodstuffs, fish, wildlife, soil and vegetation. Data from mo...

journal_title：Environmental monitoring and assessment

authors： Gray RH

更新日期：1993-07-01 00:00:00

abstract：:Mathematical models are developed for the flushing of droplets of dense nonaqueous phase liquids (DNAPLs) distributed in aquifers. The kinetics of the diffusion of dissolved volatile organic compound (VOC) from the droplets into the moving liquid is included in the models. Models are developed for the flushing of DNAP...

journal_title：Environmental monitoring and assessment

authors： Wilson DJ

更新日期：1993-05-01 00:00:00

abstract：:Prices for ferro-alloys have hardened due to the closure of plants in developed countries on account of increasingly stringent pollution control legislation, resulting in a higher cost of production. A ferro-alloy industry with a capacity of 80000 MT per annum was selected to study the nature of pollution. Because of ...

journal_title：Environmental monitoring and assessment

authors： Reddy MK,Venkat Rao D,Rama Rao KG,Rama Mohan Rao I,Vittal Rao M

更新日期：1993-04-01 00:00:00

abstract：:Dissolved oxygen was continuously monitored in eight sites of northern Gulf of Mexico estuaries in August, 1990. Monte Carlo analyses on subsamples of the data were used to evaluate several commonly used monitoring strategies. Monitoring strategies which involve single point sampling of dissolved oxygen may often misc...

journal_title：Environmental monitoring and assessment

authors： Summers JK,Engle VD

更新日期：1993-02-01 00:00:00

abstract：:Soils derived from dredged material were collected, together with earthworms from nine confined disposal facilities located in the Great Lakes Region. These samples were analyzed for 18 elements, 11 organochlorine pesticides, PCBs, and 24 polycyclic aromatic hydrocarbons. The concentrations detected in earthworms were...

journal_title：Environmental monitoring and assessment

authors： Beyer WN,Stafford C

更新日期：1993-01-01 00:00:00

abstract：:We have implemented a diagnostic system designed to advise on the likely causes of sanitary problems with public water sources. The approach to the problem makes extensive use of rule based expert systems and multi media information (maps, data, text, expert knowledge). The rules were based on actual water survey data...

journal_title：Environmental monitoring and assessment

authors： Swayne DA,Wang CW,Storey J,Lam DC,Kerby J

更新日期：1992-12-01 00:00:00

abstract：:Physical and chemical (nutrients and major ions) indicators of water quality monitored by Environment Canada between 1977 and 1987 in the Niagara River at Niagara-on-the-Lake and in the St. Lawrence River at Wolfe Island are analyzed for seasonal and annual variations. Parametric methods such as moving averages and li...

journal_title：Environmental monitoring and assessment

authors： Tsanis IK,El-Shaarawi AH

更新日期：1992-12-01 00:00:00

abstract：:The surface microlayer often contains pesticides at levels which may be more than one hundred thousand times those sampled in the remainder of the water column. Standard bioassay systems cannot asses these pesticides since no system yet devised has made use of organisms inhabiting the surface microlayer. Using floatin...

journal_title：Environmental monitoring and assessment

authors： Premdas PD,Kendrick B

更新日期：1992-09-01 00:00:00

abstract：:Industrial complexes may release dust emissions through several to up to tens of stacks, as well as via fugitive area sources. Several diffusion models for small-scale fugitive dust sources have been developed and combined with a point source model to form a series of models for industrial complexes. The applicable ar...

journal_title：Environmental monitoring and assessment

authors： Gengxin H,Liguo X,Yanfeng H

更新日期：1992-08-01 00:00:00

abstract：:The cost of a monitoring program can be easily ascertained in terms of the expenditures incurred for such items as personnel, supplies, field visits, instrumentation and laboratory analyses. The benefits of a monitoring program, however, cannot be easily evaluated due to the diversity of objectives for which monitorin...

journal_title：Environmental monitoring and assessment

authors： Rajagopal R,Tobin G

更新日期：1992-07-01 00:00:00

abstract：:Temperature from 12 to 22°C and salinity from 30.5 to 7.6‰ increased accumulation of copper in Hediste diversicolor. Copper accumulated ranged from 85.83 to 217.14 μg g(-1). Sediments reduced accumulation of copper under temperature-salinity combinations. Accumulated copper ranged from 90.19 to 153.26 μg g(-1).However...

journal_title：Environmental monitoring and assessment

authors： Ozoh PT

更新日期：1992-04-01 00:00:00

abstract：:Radon-222 is a naturally occurring radioactive gas in the uranium-238 decay series that has traditionally been called, simply, radon. The lung cancer risks associated with the inhalation of radon decay products have been well documented by epidemiological studies on populations of uranium miners.The realization that r...

journal_title：Environmental monitoring and assessment

authors： Cecil LD,Gesell TF

更新日期：1992-01-01 00:00:00

abstract：:Pollution studies of air and water samples have been greatly enhanced by the use of chromatographic techniques. The selection of the proper detectors coupled with the various column types and substrates have broadened the capabilities of environmental analyses. Proper care in sampling protocols and sample treatment ha...

journal_title：Environmental monitoring and assessment

authors： Grob RL

更新日期：1991-10-01 00:00:00

abstract：:Glaxo has practiced incineration of liquid and gaseous wastes for over twenty years and currently operate eleven liquid and gas incinerators in the United Kingdom and Singapore. The liquid incinerators burn, as their main streams, those solvents that cannot be recovered and recycled within the processes. The early ins...

journal_title：Environmental monitoring and assessment

authors： Gannon T,Ansbro AR,Burns RP

更新日期：1991-10-01 00:00:00

abstract：:This paper summarizes the results of a series of studies on the various factors that affect the leaching of lead from unplasticized poly(vinyl chloride) (UPVC) pipes. Factors that were studied include temperature, pH and extractants. Results showed that, for a given UPVC pipe, the rate of leaching of lead depended pri...

journal_title：Environmental monitoring and assessment

authors： Koh LL,Wong MK,Gan LM,Yap CT

更新日期：1991-10-01 00:00:00

abstract：:Sensitive analytical methods indicate the presence of hundreds of chemical contaminants in our environment. However, concentration of these pollutants is usually at the low parts per million or parts per billion level. At such low levels, toxicants induce long-term (chronic) rather than short-term (acute) toxicities. ...

journal_title：Environmental monitoring and assessment

authors： Giam CS,Holliday TL,Zheng Y,Williams JL,Ahmed MS

更新日期：1991-10-01 00:00:00

abstract：:A field monitoring network was set up within the Stamford canal watershed in 1989 to study both the quantitative and qualitative aspects of storm runoff from this urbanised catchment. The data acquisition equipment comprised a continuous recording rain gauge, a water level recorder and an automatic water sampler capab...

journal_title：Environmental monitoring and assessment

authors： Cheong CP

更新日期：1991-10-01 00:00:00

abstract：:Since the inception of the U.S. DOE Hanford Site in 1943, numerous studies have been conducted on terrestrial wildlife. Onsite contractors have focused their attention on the role of wildlife in the uptake and transport of radionuclides. Graduate students from across the nation have also completed more than 15 theses ...

journal_title：Environmental monitoring and assessment

authors： Fitzner RE,Gray RH

更新日期：1991-09-01 00:00:00

abstract：:Studies were conducted to describe a method for the characterisation of natural and waste waters using plant seed germination as a technique for toxicity testing. Maize seeds were found to be more sensitive to differences in water quality than cowpea seeds and also showed more consistency in results. Trials conducted ...

journal_title：Environmental monitoring and assessment

authors： Biney CA

更新日期：1991-08-01 00:00:00

abstract：:Residues of organochlorine pesticides, polychlorinated biphenyls (PCBs), and 16 elements were measured in American alligator (Alligator mississippiensis) eggs collected in 1984 from Lakes Apopka, Griffin, and Okeechobee in central and south Florida. Organochlorine pesticides were highest in eggs from Lake Apopka. None...

journal_title：Environmental monitoring and assessment

authors： Heinz GH,Percival HF,Jennings ML

更新日期：1991-03-01 00:00:00

abstract：:The basic premise underlying the approach presented in the paper is the assumption that humans are unique beings that can evaluate. The environment is described as a system of resources satisfying human needs. The assessment of the effects of environmental pollution derives from the fact that there is, or will be, non...

journal_title：Environmental monitoring and assessment

authors： Janikowski R,Starzewska A

更新日期：1991-02-01 00:00:00

abstract：:The purpose of the present statistical analysis was the assessment of the relation between time series of environmental factors and of frequencies of diseases of the respiratory system in pre-school children. During about one year, daily measurements of air pollutants and climatic variables were taken. During the same...

journal_title：Environmental monitoring and assessment

authors： Helfenstein U,Ackermann-Liebrich U,Braun-Fahrländer C,Wanner HU

更新日期：1991-01-01 00:00:00

abstract：:Analysis of soil gases is a relatively rapid and inexpensive method to delineate and measure hydrocarbon contamination in the subsurface caused by diesel or gasoline. Techniques originally developed for petroleum exploration have been adapted to tracking hydrocarbons which have leaked or spilled at or below the earth'...

journal_title：Environmental monitoring and assessment

authors： Saenz G,Pingitore NE

更新日期：1991-01-01 00:00:00

abstract：:The use of the artificially-produced radioactive isotope Cesium-137 for the measurement of soil erosion is examined in this article as an example of the development of a chemical indicator of a specific environmental stress. The theoretical and methodological bases of the technique ar examined in the context of seven ...

journal_title：Environmental monitoring and assessment

authors： Pennock DJ

更新日期：1990-11-01 00:00:00

abstract：:The removal of soluble contaminants from fractured porous bedrock by means of a recovery well is modeled by means of a lumped parameter approach. The diffusion of contaminant from immobile liquid within the pores of the fractured rock into the mobile liquid in the interstices is handled by means of a time constant the...

journal_title：Environmental monitoring and assessment

authors： Wilson DJ,Mutch RD Jr

更新日期：1990-09-01 00:00:00

abstract：:Within-clutch variability of DDE and PCB residues in eggs from 62 clutches of black-crowned night-herons (Nycticorax nycticorax) was small (12% and 17%) compared to among-clutch variability (88% and 83%). Significant correlations between concentrations of DDE (median r=0.8885) and of PCBs (median r=0.8244) occurred wh...

journal_title：Environmental monitoring and assessment

authors： Custer TW,Pendleton G,Ohlendorf HM

更新日期：1990-07-01 00:00:00

abstract：:I have been exposed to the technical literature, attitudes, and behaviour associated with large scale potential accidents. The time seems appropriate to try to couple these matters with what we now know of bioindicator systems. There are some good case histories, for example, with respect to oil pollution events, and ...

journal_title：Environmental monitoring and assessment

authors： Jeffrey DW

更新日期：1990-05-01 00:00:00

abstract：:The condition of the macroinvertebrate fauna of the Yarra River deteriorates progressively downstream from the virtually pristine headwater areas, through cleared rural areas in the mid-Yarra, to urban areas in the lower sections of the Yarra. It was found during a four year study, that the physico-chemical parameters...

journal_title：Environmental monitoring and assessment

authors： Pettigrove V

更新日期：1990-05-01 00:00:00

abstract：:The quality assessment of coastal waters of a tourist resort, on the basis of water quality criteria was attempted by using different quantitative approaches. Five variables related to eutrophication, that is nitrate, nitrite, ammonia, phosphate and chlα were analyzed. Graphical methods were applied to all variables a...

journal_title：Environmental monitoring and assessment

authors： Karydis M,Coccossis H

更新日期：1990-01-01 00:00:00

abstract：:The control of continuous polluting discharges in the U.K. was placed in a framework of statistically based legislation nearly 10 years ago. Both discharge standards and desired river quality class objectives are assessed within a probabilistic system of pollution control whereby a minimum level of 95 percent complian...

journal_title：Environmental monitoring and assessment

authors： Crabtree RW,Crockett CP,Ellis JC

更新日期：1989-11-01 00:00:00

abstract：:A predictive or model based approach to making inferences about the loading of a contaminant from a point source is presented and illustrated by estimating the total phosphorus, TP, loading from the Niagara River to Lake Ontario for the years 1967 to 1982. Information about explanatory variables and/or autodependence ...

journal_title：Environmental monitoring and assessment

authors： Thompson ME,El-Shaarawi AH

更新日期：1989-11-01 00:00:00

abstract：:Hourly measurements of radon level at four houses in Butte, Montana were analyzed. Previous studies suggestes that there are diurnal cycles, spectral analysis confirms this assertion. Moreover, there are also long term trends and weekly cycles at certain locations. The periodical cycles highly suggest that indoor rado...

journal_title：Environmental monitoring and assessment

authors： Chen CL,Oksza-Chocimowski GV

更新日期：1989-08-01 00:00:00

abstract：:Studies of toxicological and ecological effects of acidification on aquatic birds in Europe and North America are reviewed. Heavy metals are deposited by acid emissions, which also increase solubility and mobility of heavy metals in soil and water. Aluminium is leached from soil and mobilized from lake sediments under...

journal_title：Environmental monitoring and assessment

authors： Diamond AW

更新日期：1989-07-01 00:00:00

abstract：:Samples of Jerusalem limestones were exposed to high levels of common air pollutants (SO2, NO) in the presence and absence of hydrocarbon, water vapor and ultra-violet light. After exposure, the outer layers were shaved off and analyzed for sulfate and nitrate. The results revealed that even after one day of exposure ...

journal_title：Environmental monitoring and assessment

authors： Peleg M,Burla E,Cohen I,Luria M

更新日期：1989-05-01 00:00:00

abstract：:The Grand Canyon, located in Northern Arizona, is one of the seven natural wonders of the world, and has been set aside as a National Park to preserve its unique character. Several million visitors from all over the world travel to the Grand Canyon each year to witness its awesome beauty, As a natural preserve, the ar...

journal_title：Environmental monitoring and assessment

authors： Archer SF,Molenar JV,Dietrich DL

更新日期：1989-04-01 00:00:00

abstract：:The purpose of this study was to investigate how various combinations of atmospheric pollutants may affect α-GPDH activity in the satin moth. Enzyme activity was measured in crude larva and pupa as well as in hoogenates from the fat body and thoracic muscles of adults. The insects were divided into five groups and tre...

journal_title：Environmental monitoring and assessment

authors： Migula P,Karpińska B

更新日期：1988-07-01 00:00:00

abstract：:This paper discusses the buffering, oxygen-donating, and sorption capacities of soils and sediments as an inter-connected system for regulating the retention and release of chemical pollutants. In this context, the author discusses the chemical conditions under which sediments may serve as a source or a sink for toxic...

journal_title：Environmental monitoring and assessment

authors： Stigliani WM

更新日期：1988-05-01 00:00:00

abstract：:This area has a rate of patients with obstructive chronic lung disease that is the highest in Portugal and the second in Europe. Levels of pollution observed in 1985/86 and 1986/87 allowed evaluating the effects of concentrations lower than those that usually cause acute episodes. It was observed that even low levels ...

journal_title：Environmental monitoring and assessment

authors： Alvim Ferraz MC,Faria Ferraz MC,Ferraz JM,Fonseca PI

更新日期：1988-01-01 00:00:00