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CONTEST Contaminated land
Land contamination can pose both environmental and human health risks. The main causes of contamination are the direct discharge of industrial wastes, domestic pollution, over-use of pesticides, oil and fuel dumping, leaching of wastes from landfills, and leaking underground storage tanks that corrode over time, releasing toxic substances into previously clean soils. Participation in a proficiency testing scheme for soil, such as the AXIO Proficiency Testing CONTEST Scheme, is a requirement of the UK Environment Agency’s Monitoring Certification Scheme (MCERTS) ‘Performance Standard for Laboratories Undertaking Chemical Testing of Soil’. CONTEST covers a comprehensive range of analytes in soils, soil extracts, and standards solutions for the analysis of metals, inorganic contaminants, organics, soil leachates, and solid waste.
Test Material* Analyte* Soil, acid extract of soil, standard solution
Chromium (VI), Metals, Toxic metals.
Ammonia, Cyanide (complex, free, total), Dry matter, Easily liberated sulfide, Fluoride (total), Loss on ignition, pH, Sulfate (total), Sulfur (total), Thiocyanate, Water soluble (boron, chloride, fluoride, sulfate), Distillable phenolic substances, Elemental sulfur, Phenols, PAHs, PCBs, TOC, TPHs, VOCs, Soil texture.
Soil &/or standard solution
Soil, standard solution
TPH, VOCs, OC pesticides, OP Pesticides.
COD, Conductivity, Cyanide (complex, free), Major ions, Metals, pH, PI,Thiocyanide, TOC/DOC, Toxic metals.
Soil leachate
Soil waste & leachate (waste acceptance criteria)
DOC, Dry matter content ratio, Major ions, Metals, PI, TDS, Toxic metals.
Standard solution
Qualitative test of SVOCs.
Loss on ignition (FINES).
Trommel fines
Incinerator bottom
Ash, Toxic metals, pH, Alkali reserve.
* The full range and availability of test materials and analytes is determined on an annual basis and may be added or removed. For accredited and non-accredited status please see current application form/scheme description.
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