NF EN ISO 17294-2, T90-164 (10/2023)

This document specifies a method for the determination of the following elements: aluminum, antimony, silver, arsenic, barium, beryllium, bismuth, boron, cadmium, cesium, calcium, cerium, chromium, cobalt, copper, dysprosium, erbium, tin, iron, gadolinium, gallium, germanium, hafnium, holmium, indium, iridium, lanthanum, lithium, lutetium, magnesium, manganese, mercury, molybdenum, neodymium, nickel, gold, palladium, phosphorus, platinum, lead, potassium, praseodymium, rubidium, rhenium, rhodium, ruthenium, samarium, scandium, selenium, sodium, strontium, terbium, tellurium, thorium, thallium, thulium, titanium, tungsten, uranium and its isotopes, vanadium, yttrium, ytterbium, zinc and zirconium, as well as for the determination of these elements in water (e.g. drinking water, surface water, groundwater, wastewater and eluates). Taking into account specific and non-specific interferences, these elements can be measured in water and water and sludge minerals (e.g. water minerals as described in ISO 15587-1 or ISO 15587 -2). The working range depends on the matrix and the interferences encountered. In drinking water and relatively unpolluted waters, the limit of quantification (LOQ) is between 0.002 µg/l and 1.0 µg/l for most elements (see Table 1). Depending on the element concerned and the specified requirements, the working range generally covers concentrations between several ng/l and several mg/l. The limits of quantification for most elements are influenced by contamination of the blank and depend, to a large extent, on the air handling facilities available to the laboratory, as well as the purity of the reagents and the cleanliness of the laboratory. glassware. The lower limit of quantification is higher in cases where the assay is likely to be subject to interference (see Clause 5) or in cases of memory effects (see ISO 17294-1). Elements other than those mentioned in the scope may also be assayed in accordance with this document provided that the user of the document is able to validate the method adequately (e.g. interferences, sensitivity, repeatability, yield).
(Automatic translation from French)