Development of HCl-Cl₂ fractional quantification using improved fayance method

Abstract

When waste is burned, organic chlorine such as HCl is generated. However, there have been no reports to date that Cl₂ has been detected in these gases. Therefore, the purpose of this study was to separately quantify HCl and Cl₂. As for the details of the experiment, HCl or Cl₂ was generated by mixing chemicals, and then the gas was collected in a collection liquid of H₂O, HNO₃, or H₂O₂ placed in a three-stage collection device. The collected liquid was analyzed by the fayance method, and the amount of HCl and Cl₂ collected was measured. As a result, there was a tendency that the amount of HCl collected was the largest in the first stage, and the amount of Cl₂ collected increased only when H₂O₂ was used as the collection liquid. Based on these results, it was found that HCl and Cl₂ could be efficiently separated and collected by using HNO₃ as the collection liquid in the first stage and H₂O₂ in the second and third stages.