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We interpret hadronic particle abundances produced in S--Au/W/Pb 200 A GeVreactions in terms of the final state hadronic phase space model and determineby a data fit of the chemical hadron freeze-out parameters. Allowing for theflavor abundance non-equilibrium a highly significant fit to experimentalparticle abundance data emerges, which supports possibility of strangenessdistillation. We find under different strategies stable values for freeze-outtemperature T_f=143\pm3 MeV, baryochemical potential \mu_B= 173\pm6 MeV, ratioof strangeness (\gamma_s) and light quark (\gamma_q) phase space occupancies\gamma_s/\gamma_q=0.60\pm0.02, and \gamma_q=1.22\pm0.05 without accounting forcollective expansion (radial flow). When introducing flow effects which allow aconsistent description of the transverse mass particle spectra, yielding|v_c|=0.49\pm0.01c, we find \gamma_s/\gamma_q=0.69\pm0.03,\gamma_q=1.41\pm0.08. The strange quark fugacity is fitted at\lambda_s=1.00\pm0.02 suggesting chemical freeze-out directly from thedeconfined phase.Comment: 10 pages including 3 figures and 3 tables, submitted to Phys. Rev. C  Sections introduced (v2), Last paragraph in section 2 edited (v3) Effect of  radial flow described (v4

Chemical nonequilibrium and deconfinement in 200AGeV sulphur induced reactions