Chemical analyses


AQUENS provides a service of collection and analysis of water from spot measurements of critical parameters to a full analysis of all major ions, nutrients and organotoxins.

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Biological surveys


Ecological status assessment (WFD requirements) is essential for water quality evaluation. AQUENS can provide a wide range of specialist expertise to undertake detailed surveys on a variety of organisms used to monitor water quality in lakes, rivers and streams.

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Fish studies


Fish studies undertaken by AQUENS on morphometric, meristic character and electrophoretic features of freshwater and estuarine species can establish age, growth, fecundity and population dynamics. Analyses of heavy metals, particularly lead, zinc, copper and cadmium, can be carried out on fish tissues from waters subjected to contamination. Production studies of salmonids in rivers and streams may also be undertaken.

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Sediment analysis


Sediment analysis in lakes or reservoirs permits a comparison to be made of present-day and historical water quality. This is of particular importance where water quality is considered to have deteriorated with time. AQUENS undertakes analysis of sediment cores to investigate pollution in lakes from nutrients, pesticides, trace metals, acid precipitation and hydrocarbons. Lake core sediments are dated by analysis of 135Cs and 210Pb isotopes to establish time horizons.

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Rehabilitation


AQUENS offers a complete service to survey impacted rivers and to advise and supervise procedures to restore environmental conditions in order to optimise fish life and amenity value following activities such as mining and arterial drainage.

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Aquatic & non-aquatic environmental impact assessment


Industrial or residential developments inevitably have an impact on the aquatic and terrestrial environments. AQUENS will assist in baseline surveys and predicting the effects of proposed emissions and discharges to the aquatic environment and with EIS statements thus ensuring compliance with EU and other legal requirements.

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