-kullanilarak-elementlerin-belirlenmesi.jpg "EN 16171 Sludge, Treated Biological Waste and Soil - Determination of Elements Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS)")
The working range depends on the matrix and the interferences encountered. The detection limit of the method is between 0,1 mg/kg dry matter and 2,0 mg/kg dry matter for most elements. In cases where detection is likely to be obstructed or in the presence of memory effects, the detection limit will be higher.
The method described in this standard has been validated for the elements given in Table A1 (sludge), Table A2 (compost) and Table A3 (soil) of the standard. The method is also valid for the other elements listed above if the user verifies its applicability.
Sludge, treated biological waste or soil digestions with nitric acid or aqua regia are analyzed by ICP-MS to obtain a multi-element determination of analytes. This method measures ions produced by radio frequency inductively coupled plasma. Analyte species appearing in the digestion solution are nebulized and the resulting aerosol is carried into the plasma by argon gas. Ions produced by the high temperatures of the plasma are incorporated into the plasma gas and introduced into a mass spectrometer via an interface, sorted according to their mass-to-charge ratio and measured by a detector (e.g. channel electron multiplier).
Interferences are evaluated and applicable corrections are applied. Interference correction includes compensation for background ions contributed by plasma gas, reagents and components of the sample matrix. Detailed information on spectral and non-spectral interferences is given in EN ISO 17294-1.
In terms of spectral interferences, isobaric element interferences are caused by isotopes of different elements that are close to the nominal mass-to-charge ratio and cannot be separated due to insufficient resolution of the mass spectrometer used. Isobaric molecular and doubly charged ion interferences in ICP-MS are caused by ions consisting of more than one atom or charge, respectively. Nonspectral interferences are related to physical interferences, sample nebulization and transport processes, and ion transport efficiencies. Nebulization and transport processes may be affected if a matrix component causes a change in surface tension or viscosity. Changes in matrix composition can cause significant signal suppression or enhancement.
For the determination of trace and ultra-trace levels of elements, the reagents must be of sufficient purity. The concentration of analyte or interfering substances in the reagents and water must be negligible compared to the lowest concentration to be determined.
Major reagents used in the tests include:
Among the numerous testing, measurement, analysis and evaluation studies that our organization has provided for businesses in various sectors, our organization also provides testing services defined in the standard “EN 16171 Sludge, treated biological waste and soil - Determination of elements using inductively coupled plasma mass spectrometry (ICP-MS)” with its trained and expert staff and advanced technological equipment.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
EUROLAB reporting and certification activities, United Accreditation Foundation (UAF), Turkish Accreditation Agency (TÜRKAK), Enterprise Accreditation Foundation (EAF) based on the accreditation provided by its institution. The Enterprise Accreditation Foundation (EAF) is also a signatory to the United Nations (UN GLOBAL COMPACT).
