Chemical parameters have been standardised

The naming of chemical parameters within DINOloket, has been standardised. This has made the information from DINOloket more unambiguous. Also, the naming now matches the Dutch Key Register of the Subsurface (Basisregistratie Ondergrond).

In the past, the Geological Survey of the Netherlands of TNO collected data of chemical parameters within the objects borehole research, groundwater analysis reports and seabed research. These data are included in the database of the Geological Survey of the Netherlands and are made available via DINOloket. The data came from different data sources and date from different periods. As a result, there was a lot of variation in the naming of the relevant parameters. For the parameter iron, for example, various names and spellings were used: FE, Fe, Iron, iron, iron (Fe).

Standardisation of naming parameters

Recently, the Geological Survey of the Netherlands ensured that the various names and spellings of chemical parameters were harmonised into one name per parameter. The names used are the same as those used by the Dutch Key Register of the Subsurface, SIKB and AQUO. If the parameter is not present in one of these domains, a similar notation has been chosen. This adjustment has no impact on the delivery format.

The advantage of unambiguous information

Thanks to the standardisation of chemical parameters, it is much easier for users to search data from DINOloket. There is no longer any need to search with all kinds of variations in spelling and naming. Another advantage is that historical data can be more easily migrated to the Dutch Key Register of the Subsurface (Basisregistratie Ondergrond or ‘BRO’) if applicable. After all, groundwater quality data are already included in the BRO under the registration object Groundwater composition investigation (GAR).

A list of the modified names of the chemical parameters, with the old and new notation, is available here.