Metals Analysis: RoHS/WEEE Compliance Testing

Analytical testing dots RoHS WEEE Analysis

Analytical methods for the detection of metals are well developed once they are in solution. The challenge with electronic and electrical equipment is related to sample preparation, both homogenization and digestion (i.e. getting the target metals in solution ready for instrumental measurement). ALS Environmental has numerous homogenization and digestion procedures on line so the appropriate techniques can be applied to each sample on an individual basis. Once satisfactory dissolution of the sample is achieved, the appropriate instrumental technique can be applied.

Analytical testing dots

ALS Environmental and Metals Analysis

ALS Environmental has the capability to select from numerous instrumental techniques to match the correct procedure with a particular sample type. These include Flame Atomic Absorption Spectroscopy (FAAS), Graphite Furnace Atomic Absorption Spectroscopy (GFAAS), Hydride - Atomic Absorption Spectroscopy (Hydride-AAS), Purge & Trap - Cold Vapor Atomic Fluorescence Spectroscopy (P&T-CVAFS), Cold Vapor Atomic Absorption Spectroscopy (CVAAS), Inductively Coupled Plasma - Argon Emission Spectroscopy (ICP-AES), and Inductively Coupled Plasma Mass Spectrometry (ICP-MS). As with PBBs and PBDEs, this array of options allows for meeting compliance levels in very small electrical components (i.e. as small as 1 or 2 mg).

Note that EPA procedures can be cited for the various techniques employed for digestion and analysis of samples. For some sample types, modification is required to accommodate the material because the scope of the EPA procedures does not cover more advanced applications.