Random sequential adsorption of polyatomic species with the presence of impurities

► RSA of linear and SAW k-mers on lattices with the presence of impurities is studied. ► Calculation of exponent σ of RSA via the effective activity of the system. ► Jamming coverage decreases as the concentration of impurities increases (fixed k). ► Jamming coverage is a monotonic decreasing function of k for a fixed value of c. ► Determination of σ(k,c) for linear and SAW k-mers on heterogeneous lattices.