Marine sediments

RPS routinely support environmental pre and post operations surveys, dredging operations and planning surveys such as with the redevelopment of Belfast Harbour and the expansion of Dublin Harbour. We've also been involved in marine monitoring programmes such as the marine environmental impact assessment of the wreck of RFA Darkdale, an oil tanker that was torpedoed in WWII in St James Bay, St Helena, in the South Atlantic - this contract was carried out on behalf of the UK MoD.

Reliable quality of results

Our deep expertise in laboratory analysis is an important factor in ensuring the quality of results can be relied upon to meet regulatory requirements. Our teams have extensive experience working in the marine industry, in both government and commercial laboratories. This ensures they use the most up-to-date and appropriate methods and techniques to achieve high quality results in realistic time frames.

RPS holds UKAS accreditation for marine sediment analysis in line with the MMO requirements. All data supplied by our laboratories for marine licence applications is backed by CRM and IRM quality data. We take part in a number of performance testing schemes such as Quasimeme, FAPAS, Aquacheck and RTC.

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Our analytical services include

  • Total metal digest with hydrofluoric acid
  • Available metal digest 50% nitric acid
  • Partial metal digest with aqua regia
  • ICP-MS and CVAFS analysis to meet the requirements for the  characterisation of dredge material  for disposal at sea (MMO, Marine  Scotland, NIEA and Marine  Institute)
  • Organotin compounds in sediments (TBT, DBT, MBT etc.)
  • Loss on ignition, dry matter, solids,  carbonate content and total organic carbon
  • Sediment density
  • Total Hydrocarbon content (TPH  and speciated aliphatics)
  • Oil and Grease
  • Oil in Water (GC-FID or FTIR)
  • BTEX,VOCs, petrol range organics
  • PAHs EPA16 and alkylated 2-6 ring PAHs
  • PCBs including EN25, WHO12, IC7 and CEFAS 25 congeners
  • SVOCs by GC-MS
  • Alkylphenols, Alkylphenol ethoxylates
  • Organochlorine Pesticides
  • Particle size analysis via wet and dry sieving (BS1377 & NMBAQC methods) and laser diffraction

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