Loadings of polycyclic musks and triclosan in separate sewage treatment plants and coastal marine sediments in Hiroshima bay area

Abstract

 The concentrations and mass flow rates of three polycyclic musk fragrances OTNE, HHCB, and AHTN, a bactericide triclosan were examined in a sewage treatment plant and coastal marine sediments in the Hiroshima bay area, Japan. Based on the results, the total emission and sedimentation loadings in the bay area was evaluated. The total sewage influent loadings in the area were estimated to be 200-1000 kg yr^-1, respectively, whereas the effluent loadings from sewage treatment plants were 0-600 kg yr^-1. The sedimentation loadings in the bay area were far lower than the effluent loadings and were 0-4 kg yr^-1, respectively. Further, the concentrations of related chemicals were measured and their behaviors were discussed.