The work presented here aims at developing a microfluidic device for automated sample enrichment of water samples. The device is optimized for the analysis of small organic pollutants by biosensing and environmental monitoring applications. Miniaturization and automation of solid phase extraction with our device enabled us to reduce the volume of sample and of eluent significantly, resulting in...

During the last few years, the concern about the protection of the environment has largely increased due to the contaminants mainly with anthropogenic origin and have affected and continue to threaten human resources especially air quality, surface soil and groundwater. Solid wastes are produced every day in urban societies as a result of human activities and in an attempt to dispose of these m...

A reliable analytical method was developed here for the simultaneous separation, identification and quantification of ten polybrominated diphenyl ethers (PBDEs), nine methoxylated PBDEs (MeO-PBDEs) and ten hydroxylated PBDEs (OH-PBDEs) in various environmental matrices, including water, soil, sediment, plant, mollusk and fish. PBDEs and MeO-PBDEs were measured by gas chromatography coupled with...

The prevalence of different neighborhood environmental stressors and associations between the stressors and self-rated health are described in a representative sample of 2,077 individuals, aged 18-85 years, in southern Sri Lanka. Mosquito menace (69.4%), stray dog problems (26.8%), nuisance from neighbors (20.3%), and nuisance from drug users (18.7%) were found to be the most prevalent environm...

The Department of Pesticide Regulation Environmental Monitoring Branch has successfully used ELISA for analyses of pesticides in soil and water samples for over a decade using both in-house assays (Goh 1992a, 1992b, 1993, 1996) and commercially available kits (Goh 1990, 1991). We recently evaluated a commercial diazinon kit for its sensitivity, selectivity, accuracy and precision, etc. for surf...

in this study some thermodynamic parameters including freezing point, boiling point and the vapor pressure of urmia lake salt water were investigated as some important environmentally monitored physicochemical properties of urmia lake. in this regard salt concentration is chiefly responsible for the modification of the thermodynamic properties of urmia lake water which affects its overall envir...

background: acanthamoeba spp . are free-living amebas found in a wide variety of natural habitats. the high percentage of acanthamoeba in different environmental sources represents a sanitary risk for public health especially contact lens users and immunocompromised patients. the aim of this study was to determine the presence of acanthamoeba spp. in different environments such as water, soil, ...

This paper describes a simple, sensitive and environmentally benign method for the direct determination of aniline and its derivatives in environmental water samples by capillary zone electrophoresis (CZE) with field-enhanced sample injection. The parameters that influenced the enhancement and separation efficiencies were investigated. Surprisingly, under the optimized conditions, two linear ra...

The potential of wind power as a global source of electricity is assessed by using winds derived through assimilation of data from a variety of meteorological sources. The analysis indicates that a network of land-based 2.5-megawatt (MW) turbines restricted to nonforested, ice-free, nonurban areas operating at as little as 20% of their rated capacity could supply >40 times current worldwide con...