Long-term survival of Escherichia coli O157:H7 in soil and in the rhizosphere of many crops after fumigation is relatively unknown. One of the critical concerns with food safety is the transfer of pathogens from contaminated soil to the edible portion of the plants. Multiplex fluorogenic polymerase chain reaction was used in conjunction with plate counts to quantify the survival of E. coli O157...

Quantum particle is assumed located in an analytically perturbed harmonic-oscillator potential. Its motion along certain complex, PT −symmetric “toboggan” paths which N−times encircle the branch point in the origin is studied in both the boundstate and scattering regime.

recently, with increasing public awareness of food safety, developments of some valid and rapidly analytical methods are required for the determination of residual pesticides in crops.this study was conducted on validation of a reliable, accurate and precise method for multi analysis of pesticides residue in melon as a main fruit in iranian food basket. a reliable, and valid method based on spi...

A two-dimensional numerical model has been developed to simulate the electrokinetic remediation of soils contaminated with heavy metals and has been validated using laboratory experiments performed with a copper spiked kaolin. The model divides the soil into compartments in a Cartesian grid and a non-conductivity barrier encloses the considered area. Basically, it consists in two main parts cle...

The implementation of the new Water Reuse regulation in European Union brings to forefront need evaluate risks using wastewater for crop irrigation. Here, a two-tier ecotoxicological risk assessment was performed fate wastewater-borne micropollutants soil and their impact on plants microorganisms. To this end, two successive cultivation campaigns lettuces were irrigated with (at agronomical dos...

To determine the toxicity and bioaccumulation of copper, adult oribatid soil mites Oppia nitens were exposed for 28 days to LUFA 2.2 spiked at concentrations 0–6400 mg Cu kg−1 dry soil. Effects on survival reproduction related total available (0.01 M CaCl2 extractable pore water) in animals. The showed a concentration-dependent uptake which, however, decreased toxic concentrations. Overall fact...

due to its wide industrial use, chromium is considered as a serious environmental pollutant. phytoremediation is an effective, economical and biocompatible method for remediation of contaminated soils. the present study is an attempt to assess the capability of populus alba l., for the phytoextraction of cr from a polluted loamy soil added with either cocopeat, litter and peatmoss as organic ma...

We have quantified ribose, rhamnose, arabinose, xylose, fucose, mannose, glucose, and galactose in soil by gas chromatography (GC) simultaneously after converting to aldononitrile acetate derivatives. A recommended single-hydrolytic step by 4M trifluoroacetic acid (TFA) at 105 1C for 4 h was more effective for releasing soil neutral sugars from non-cellulosic carbohydrates and better suited to ...