Novel concepts for preparation of reference materials as whole water samples for priority substances at nanogram-per- liter level using model suspended particulate matter and humic acids

One of the unresolved issues of the European Water Framework Directive is the unavailability of realistic water reference materials for the organic priority pollutants at low ng L-1 concentrations. In the present study three different types of ready-to-use water test materials were developed for polycyclic aromatic hydrocarbons (PAHs), poly brominated diphenyl ethers (PBDEs) and tributyltin (TBT) at ng L-1 levels. The first type simulated the dissolved phase in the water and comprised of a solution of humic acids (HA) at 5 mg/L dissolved organic carbon (DOC) and a spike of the target compounds. The second type of water sample incorporated the particulate phase in water. To this end model suspended particulate matter (SPM) with a realistic particle size was produced by jet milling soil and sediments containing known amounts of PAHs, PBDEs and TBT and added as slurry to mineral water. The most complex test materials mimicked “whole water” consequently containing both phases, the model SPM and the HA solution with the target analytes strongly bound to the SPM. In this paper the development of concepts, processing of the starting materials, characterization of the HA and model SPMs as well as results for homogeneity and stability testing of the ready-to-use test materials are described in detail.

ELORDUI-ZAPATARIETXE DEL AGUILA Saioa;  FETTIG Ina;  PHILIPP Rosemarie;  GANTOIS Fanny;  LALÈRE Beatrice;  SWART Claudia;  PETROV Panayot;  GOENAGA INFANTE Heidi;  VANERMEN Guido;  BOOM Gerard;  EMTEBORG Hakan; 

2015-05-11

SPRINGER HEIDELBERG

JRC92633

1618-2642,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC92633,   

10.1007/s00216-014-8349-8,