BACKGROUND Chemical contaminants in the Canadian subarctic present a health risk with exposures primarily occurring via the food consumption. OBJECTIVE Characterization of soil contaminants is needed in northern Canada due to increased gardening and agricultural food security initiatives and the presence of known point sources of pollution. DESIGN A field study was conducted in the western ...

While a dot plot depicts data on quantitative variable without distortion, boxplot shows only the five-number summary. For large data, to aid in counting, we propose an IVY as companion plot. Also, for if is approximately normally distributed, boxplot, Gaussian interval that summary, mean, SD, sample size, and counts of outliers. We hope these enhanced visualizations will add value commonly use...

We developed a framework to evaluate the performance of a detection system for contaminated surfaces. We employ the radiative transfer model for contaminated surfaces (Ben-David and Davidson, ECBC-TR-1084, 2013) and transform the physical model into a stochastic probability model with which detection probability and false alarms can be estimated for scenarios of interest. Our algorithm employs ...

Many foodborne outbreaks of enterohemorrhagic Escherichia coli O157:H7 infection have been associated with the consumption of contaminated vegetables. On-farm contaminations through contaminated manure or irrigation water application were considered likely sources of the pathogen for several outbreaks. Field studies were done to determine the survival of E. coli O157:H7 on two subterranean crop...

Phytoremediation uses plants and their associated microorganisms in conjunction with agronomic techniques to remove or degrade environmental contaminants. The objective of the field study was to evaluate the effect of vegetation establishment plus fertilizer addition on the biodegradation of alkylated polycyclic aromatic hydrocarbons in a crude oil-contaminated soil. Four replications of the fo...

A field remediation treatment was carried out to examine the long-term effect of biochar on the immobilisation of metals and the revegetation of a contaminated site in Castleford, UK. The extracted concentrations of nickel (Ni) (II) and zinc (Zn) (II) in the carbonic acid leaching tests were reduced by 83-98% over three years. The extracted Ni (II) and Zn (II) concentrations three years after t...

Background: The study investigated the extent of soil arsenic (As) contamination in agricultural plots in Bengal Delta through contaminated groundwater irrigation. Edaphic levels of As and oxidizable organic carbon (OOC) were tested along a depth gradient (0 to 160 ft) in agricultural plots. Methods: Soil samples were collected from surface up to 160 feet depth at every 5 feet. By boreholes dri...

The plants, grown in the soils around a Fuel Holding Depot of the Nigerian National Petroleum Corporation, Ibadan, Oyo state, Nigeria have been investigated in this research in terms of their density and species composition so that the impact of contamination by petroleum products on soil seed banks could be determined. The study has used designated plots (25m by 25m) in a site, contaminated by...