scope:

1.1 This standard specifies a method for the determination of total metal content in leather using digestion of the leather and subsequent determination with Inductively Coupled Plasma - Optical Emission Spectrometry (ICP-OES), or Inductively Coupled Plasma - Mass (ICP-MS) or Atomic Absorption Spectrometer (AAS). This is an analysis for the total metal content in leather, it is not compound specific or specific to the oxidation state of the metals. The method is applicable for determining the following metals: Aluminium (Al) Magnesium (Mg) Tallium (Tl) Antimony (Sb) Manganese (Mn) Tellurium (Te) Arsenic (As) Mercury (Hg) Tin (Sn) Barium (Ba) Molybdenum (Mo) Titanium (Ti) Cadmium (Cd) Mercury (Hg) Tungsten (W) Calcium (Ca) Nickel (Ni) Vanadium (V) Chromium (Cr) (see 1.2 below) Nickel (Ni) Zinc (Zn) Cobalt (Co) Potassium (K) Zirconium (Zr) Copper (Cu) Selenium (Se) Iron (Fe) Silicon (Si) Lead (Pb) Sodium (Na) 1.2 In case of chromium tanned leathers, ISO 5398-1, or ISO 5398-2, or ISO 5398-3, or ISO 5398-4 shall be used.