<p>This document specifies an extraction method to determine the bioavailable (potential and environmental available) fraction and the non-bioavailable fraction of a contaminant in soil using a "receiver phase" for an organic contaminant with strong sorbing or complexing properties, for example, Tenax<sup>®</sup>[1] or cyclodextrin, respectively.</p>
<p>NOTE 1 The bioavailable fraction is defined in ISO 17402 as environmental bioavailability.</p>
<p>The method is applicable for non-polar organic contaminants with an aqueous solubility of <100 mg/l. The method is applicable for soil and soil-like material including (dredged) sediments.</p>
<p>NOTE 2 The method is theoretically applicable to non-polar organic contaminants with an aqueous solubility of 1 000 mg/l. The method has been often applied for compounds with a much lower solubility (<i>K</i><sub>ow</sub> > 3) and less for compounds with a higher solubility. The applicability is therefore defined for compounds with an aqueous solubility of <100 mg/l.</p>
<p>[1] Tenax<sup>® </sup>is an example of a suitable product available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by ISO of this product.</p>
Registration number (WIID)
78022
Scope
<p>This document specifies an extraction method to determine the bioavailable (potential and environmental available) fraction and the non-bioavailable fraction of a contaminant in soil using a "receiver phase" for an organic contaminant with strong sorbing or complexing properties, for example, Tenax<sup>®</sup>[1] or cyclodextrin, respectively.</p>
<p>NOTE 1 The bioavailable fraction is defined in ISO 17402 as environmental bioavailability.</p>
<p>The method is applicable for non-polar organic contaminants with an aqueous solubility of <100 mg/l. The method is applicable for soil and soil-like material including (dredged) sediments.</p>
<p>NOTE 2 The method is theoretically applicable to non-polar organic contaminants with an aqueous solubility of 1 000 mg/l. The method has been often applied for compounds with a much lower solubility (<i>K</i><sub>ow</sub> > 3) and less for compounds with a higher solubility. The applicability is therefore defined for compounds with an aqueous solubility of <100 mg/l.</p>
<p>[1] Tenax<sup>® </sup>is an example of a suitable product available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by ISO of this product.</p>
