The big picture: using wildflower strips for pest control
Specialising in the preparation and elemental analysis of soil, crop and environmental samples, our state-of-the-art facilities provide a specialist agricultural analysis service for researchers at Rothamsted Research, collaborators, tenants and external clients.
Following a £730,000 refurbishment in 2021, funded by the Biotechnology and Biological Sciences Research Council (BBSRC), the Analytical Chemistry Facility offers flagship laboratories, providing chemical services in support of strategic agricultural science.
Between 2018 and 2024, the Analytical Chemistry Facility at Harpenden was awarded a further £1.5 million of investment from BBSRC for the acquisition of world leading, hi-tech instrumentation.
Our facilities include preparation labs designed for sample weighing, acid digestion and a wide range of extraction procedures. With a range of specialist laboratories equipped with the most advanced instrumentation available, we provide high level performance in terms of speed, accuracy, precision, and reliability. Analysis services include major and trace element determination by : Inductively Coupled Plasma - Optical Emission Spectroscopy (ICP-OES) and Multi Quad Inductively Coupled Plasma - Mass Spectrometry (ICP-MS), total nitrogen and carbon, inorganic carbon, total organic carbon (TOC) and anion analysis by colourimetric continuous flow.
All procedures are primarily aimed at researchers or clients looking for a high-quality service, where precision and accuracy is essential. All samples are weighed not scooped and are performed by a team of highly skilled, experienced analysts.
All procedures adhere to strict Quality Assurance (QA) protocols; the facility follows the Joint Code of Practice (JCoPR) and participates in the WEPAL International Soil Exchange (ISE) and International Plant Exchange (IPE) programmes.
Procedure |
Determination |
Sample |
Nitric/perchloric digestion |
Total cations: major + trace elements |
Crop (milled) |
Aqua regia digestion |
Total cations: major + trace elements |
Soil (milled) |
Microwave digestion |
Boron, ICP-MS analysis |
Crop (milled) |
Ammonium nitrate extraction |
Exchangeable cations: available K Ca Mg Na |
Soil (2mm) |
Sodium bicarbonate extraction |
Available P (Olsen P) |
Soil (2mm) |
Mehlich III extraction |
Plant available: major + trace elements |
Soil (2mm) |
Potassium chloride extraction |
Available nitrate and ammonium |
Soil (fresh) |
Cold water extraction |
Nitrate and chloride |
Crop (milled) |
Instrumental Procedure |
Determination |
Sample |
ICP-OES |
Major + trace elements: (>50ppb in solution) Al B Ca Cd Co Cr Cu Fe K Mg Mn Mo Na Ni P Pb S Ti Zn |
Water + crop/soil extracts + digests |
ICP-MS |
Trace elements: (<50ppb in solution) As Cd Co Cr Cu Mn Mo Ni Pb Se Ti Zn |
Water + crop/soil extracts + digests |
Skalar San PLUS anion colourimetric continuous flow analysis |
Available NO3-N NH4-N NO2-N PO4-P Cl + Total soluble nitrogen (UV oxidation) |
Water + soil/crop/FYM extracts + digests |
Leco Dumas combustion analysis |
Total nitrogen and carbon |
Crop/soil (milled) |
Skalar Primacs acid addition inorganic carbon analysis |
Inorganic carbon |
Soil (milled) |
Total organic carbon |
TOC (as NPOC) |
Water + soil extracts |
pH and EC |
pH in water, pH + EC |
Soil (2mm) |
Dry matter (oven) |
Dry matter weights |
Soil |
Loss on ignition (muffle furnace) |
Loss on ignition |
Soil |
Analytical Chemistry Facility (Harpenden)
Rothamsted Research
Harpenden
Herts
AL5 2JQ
Tel: +44 (0) 1582 938648
Email: analytical.chemistry.h@rothamsted.ac.uk