摘要 |
<p>An aqueous cleaning solution for treating hydrocarbon-contaminated soil and for cleaning hydrocarbon-contaminated surfaces is provided. Suitably it is prepared by progressively diluting a concentrate comprising: i) 10 - 60 % by volume of a first emulsifier; (ii) 10 - 60 % by volume of a second emulsifier and (iii) 20 - 70% by volume of vegetable oil In a preferred embodiment the concentrate comprises a polyethylene glycol sorbitan trioleate, a polyoxyethylene sorbitan monopalmitate and corn oil with the two sorbitan molecules having different HLB-values.</p> |