Determines contaminant concentrations
April 1st 2008

VHE, the specialist land remediation arm of Renew, has invested in the latest on-site validation technology to provide data on contaminated soil and water, enabling instant decisions to be made on the treatment required and optimising the remediation process.

Two methods used by VHE to determine contaminant concentrations are Ultraviolet Fluorescence and X-ray Fluorescence.

These can, on many sites, measure all contaminants of concern.

X-ray Fluorescence using Niton XL3 XRF analyser enables VHE to determine heavy metals concentrations using a portable detector which produces real-time measurements in the field.

UV Fluorescence is carried out using Sitelab UVF – 3100. A sample of soil or water is first prepared by chemical extraction and then subjected to UV light.This excites hydrocarbon molecules which then emit light (fluorescence) at wavelengths specific to each molecule type.Measurement of the fluorescence response provides quantitative measurements of hydrocarbons. UVF detection from the prepared sample takes seconds