| Title | <p>This part of ISO 15587 specifies a method for extracting trace elements from a water sample using <i>aqua regia</i> as a digestion agent. The method is applicable to all types of waters with a suspended solids mass concentration of less than 20 g/l and a mass concentration of total organic carbon (TOC) expressed as carbon of less than 5 g/l. </p>
<p>The <i>aqua regia</i> digestion method is empirical and it might not release elements completely. However, for most environmental applications, the result is fit for purpose.</p>
<p><i>Aqua regia</i> digestion is suitable for the release of: Ag, Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Se, Sn, Sr, Tl, V, Zn. It is not suitable for the digestion of refractory compounds such as SiO <sub>2</sub>, TiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub>. The presence of chloride in the digestion solution may limit the application of analytical techniques.</p>
<p>The method is generic and may be implemented using a wide variety of equipment provided the digestion composition is unchanged,<i> </i>the digestion temperature is known, and the digestion duration is in accordance with this temperature.</p> |
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| Scope | <p>This part of ISO 15587 specifies a method for extracting trace elements from a water sample using <i>aqua regia</i> as a digestion agent. The method is applicable to all types of waters with a suspended solids mass concentration of less than 20 g/l and a mass concentration of total organic carbon (TOC) expressed as carbon of less than 5 g/l. </p>
<p>The <i>aqua regia</i> digestion method is empirical and it might not release elements completely. However, for most environmental applications, the result is fit for purpose.</p>
<p><i>Aqua regia</i> digestion is suitable for the release of: Ag, Al, As, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Hg, K, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Se, Sn, Sr, Tl, V, Zn. It is not suitable for the digestion of refractory compounds such as SiO <sub>2</sub>, TiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub>. The presence of chloride in the digestion solution may limit the application of analytical techniques.</p>
<p>The method is generic and may be implemented using a wide variety of equipment provided the digestion composition is unchanged,<i> </i>the digestion temperature is known, and the digestion duration is in accordance with this temperature.</p> |
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