1 Scope
This part of ISO 17072 specifies a method for the determination of extractable metals in leather using extraction with an acid artificial-perspiration solution and subsequent determination with inductively coupled plasma/optical emission spectrometry (ICP-OES), or inductively coupled plasma/atomic emission spectrometry (ICP/AES), or inductively coupled plasma/mass spectrometry (ICP/MS), or atomic absorption spectrometry (AAS) or spectrometry of atomic fluorescence (SFA).
This method is especially suitable for determining the extractable chromium in chromium-tanned leathers.
This method determines extractable metals in leather; it is not compound-specific or specific to the oxidation state of the metals.
The method is also applicable for the determination of many extractable metals, including:
| Aluminium (Al) |
Copper (Cu) |
Nickel (Ni) |
| Antimony (Sb) |
Iron (Fe) |
Potassium (K) |
| Arsenic (As) |
Lead (Pb) |
Selenium (Se) |
| Barium (Ba) |
Magnesium (Mg) |
Tin (Sn) |
| Cadmium (Cd) |
Manganese (Mn) |
Titanium (Ti) |
| Calcium (Ca) |
Mercury (Hg) |
Zinc (Zn) |
| Chromium (Cr) |
Molybdenum (Mo) |
Zirconium (Zr) |
| Cobalt (Co) |
|
|
The quantification limit of extractable lead is 3 mg/kg (see Annex A).