ISO TS 16965:2013 pdf download.Soil quality – Determination of trace elements using inductively coupled plasma mass spectrometry (ICP-MS).
This Technical Specification specifies a method for the determination of the following elements in aqua regia or nitric acid digests or other extraction solutions of sludge, treated biowaste and soil:
Aluminium (Al), antimony (Sb), arsenic (As), barium (Ba), beryllium (Be), bismuth (Bi), boron (B), cadmium (Cd), calcium (Ca), cerium (Ce), cesium (Cs), chromium (Cr), cobalt (Co), copper (Cu), dysprosium (Dy), erbium (Er), europium (Eu), gadolinium (Gd), gallium (Ga), germanium (Ge), gold (Au), hafnium (Hf), holmium (Ho), indium (In), iridium (Ir, iron (Fe), lanthanum (La), lead (Pb), lithium (Li), lutetium (Lu), magnesium (Mg), manganese (Mn), mercury (Hg), molybdenum (Mo), neodymium (Nd), nickel (Ni), palladium (Pd), phosphorus (P), platinum (Pt), potassium (K), praseodymium (Pr), rhenium (Re), rhodium (Rh), rubidium (Rb), ruthenium (Ru), samarium (Sm), scandium (Sc), selenium (Se), silicon (Si), silver (Ag), sodium (Na), strontium (Sr), sulfur (S), tellurium (Te), terbium (Tb), thallium (TI), thorium (Tb), thulium (Tm), tin (Sn), titanium (Ti), tungsten (W), uranium (U), vanadium (V), ytterbiurn(Yb), yttrium (Y), zinc (Zn) and zirconium (Zr).
The working range depends on the matrix and the interferences encountered.
The limit of detection is between 0,1 mg/kg dry matter and 2,0 mg/kg dry matter for most elements.
The limit of detection will be higher in cases where the determination is likely to have interferences (see
Clause 4) or in the case of memory effects (see e.g. 8.2 of ISO 17294-1:2004).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 11466, Soil quality — Extraction of trace elements soluble in aqua regia
150 16729, Soil quality — Digestion of nitric acid soluble fractions of elements
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 17294-1:2004, Water quality — Application of inductively coupled plasma mass spectrometry (ICPMS) — Part 1: General guidelines
3 Principle
Digests with nitric acid or aqua regia of samples of sludge, treated biowaste or soil (see ISO 11466 and
ISO 16729) are analysed by ICP-MS to get a multi-elemental determination of analytes.
The method measures ions produced by a radio-frequency inductively coupled plasma. Analyte species originating in the digest solution are nebulised and the resulting aerosol is transported by argon gas into the plasma. The ions produced by the high temperatures of the plasma are entrained in the plasma gas and introduced, by means of an interface, into a mass spectrometer, sorted according to their mass- to-charge ratios and quantified with a detector (e.g. channel electron multiplier).
4 Interferences
4.1 General
Interferences shall be assessed and valid corrections applied. Interference correction shall include compensation for background ions contributed by the plasma gas, reagents, and constituents of the sample matrix.
Detailed information on spectral and non-spectral interferences is given in Clause 6 of ISO 17294-1:2004.ISO TS 16965 pdf download.