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Reference materials for the analysis of rain water

Objective


The water is currently monitored with regard to the acid rain problem. Important indicator components in monitoring rain water are: total acidity, ammonium, nitrate, potassium, calcium, magnesium, sodium, chloride and sulphate. Beside the analytical difficulties caused by the susceptibility to contamination with gases from the laboratory air, the major difficulties in certification are caused by stability problems of the samples. The project was mainly focused on stability studies and 2 certified reference materials (CRM) with low and high element contents, namely 408 and 409, were prepared.
Rain water is currently monitored in the Member States with regard to the acid rain problem. Important indicator components in monitoring rain water are: total acidity, NH4, NO3, K, Ca, Mg, Na, Cl and SO4. Beside the analytical difficulties caused by the susceptibility to contamination with gases from the laboratory air, the major difficulties in certification are caused by stability problems of the samples. Hence a first part of the project was mainly focused on stability studies.

Coordinator

KIWA NV - KEURINGSINSTITUUT VOOR WATERLEIDINGARTIKELEN
Address
7,Sir W. Churchill-laan 273
2280 AB Rijswijk Zh
Netherlands

Participants (8)

EPAL - Empresa Portuguesa das Aguas Livres, S.A.
Portugal
Address
24,Av. Da Liberdade
1122 Lisboa
Fac. de Ciências do Porto
Portugal
Address
Praça Gomes Teixeira
4000 Porto
GSF - FORSCHUNGSZENTRUM FUER UMWELT UND GESUNDHEIT GMBH
Germany
Address
Ingolstaedter Landstrasse 1
85764 Neuherberg
NERC Institute of Terrestrial Ecology
United Kingdom
Address
Merlewood Research Station
LA11 6JU Grange Over Sands
National Rivers Authority (NRA)
United Kingdom
Address
Welsh Regional Laboratory Penyfai House 19 Penyfai Lane Furnace
SA15 4EL Llanelli
RIVM
Netherlands
Address
9,A. Van Leeuwenhoeklaan
3720 BA Bilthoven
ROTHAMSTED RESEARCH LIMITED
United Kingdom
Address
West Common
AL5 2JQ Harpenden, Herts
Swedish Environmental Protection Agency
Sweden
Address

75001 Uppsala