The potential capability of DGT for measuring polar organic compounds was recognised at its inception in the early nineties, but publications did not emerge until 2012. Since then, this capability has developed rapidly. A list with references for each organic analyte is available, but as new publications continually appear and the list of analytes increases, this cannot contain the latest information. Detailed methods are also provided, but we recommend that new users should read the relevant publications before first using DGT. We have only listed products where performance is proven with a robust DGT device. Some other products can be measured with some compromises. Please enquire whether we can meet your needs.
The main binding agents that have been used are XAD18, HLB and activated charcoal. Generally diffusion layers containing an agarose gel have proved to be most effective and these are supplied routinely in most DGT devices for organics. Alternative arrangements, such as a polyacrylamide gel can be supplied on request. The composition of the protective membrane part of the diffusion layer is optimised for each group of organic substances and details are provided with the product. Alternatives can be supplied on request.
Most organics measured by DGT can be classified into 11 groups. Further information is available for each of these by clicking on the appropriate link.
endocrine disrupting chemicals
household and personal care products
organophosphate flame retardants
Only products for waters and soils are listed on the web site, but loaded sediment probes can also be supplied on request.
Detailed instructions for the use of most DGT passive samplers are available.
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