Measurement method for determining concentrations in dust deposition
The parts of this guideline describe complete methods to determine the metals and metalloids in the suspended particulate matter of the ambient air and in the dust deposition, which enter ambient air from combustion plants and during their manufacture and processing. The selection of components to be determined was based on the elements listed in Seventeenth Ordinance on the implementation of the Federal Immission Control Act (17th BimSchV) or the Technical Instruction on Air quality control (TA Luft).
In Part 14 of VDI 2267 a complete and validated measurement method for determining the total contents of Al, As, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, V and Zn in the dust deposition is presented. Dust deposition within the meaning of this guideline denotes the dry residue of the atmospheric particulate matter input collected in a collecting vessel (so-called collecting pot) during the exposure period (period generally one month). The dry residue is digested in an oxidizing acid mixture. For this three fieldproven digestion variants (two open digestions, one closed microwave digestion) are described. The subsequent analysis of the digestion solution for the listed metals and metalloids is performed by Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES).
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Topic world Digestion
Sample digestion is a critical step in chemical analysis that often determines the success or failure of an investigation. It involves the targeted transformation and preparation of a sample to make the components of interest accessible for analysis. Various methods such as thermal, chemical or enzymatic digestion are used to dissolve matrix components, remove unwanted components and release target substances.
Topic world Digestion
Sample digestion is a critical step in chemical analysis that often determines the success or failure of an investigation. It involves the targeted transformation and preparation of a sample to make the components of interest accessible for analysis. Various methods such as thermal, chemical or enzymatic digestion are used to dissolve matrix components, remove unwanted components and release target substances.