On or after July first nineteen hundred eighty-one the comptroller may establish from time to time additional sinking funds to amortize and redeem any or all of the sinking fund bonds issued and sold from time to time by the city of New York on or after that date for any purpose for which sinking fund bonds may be authorized excepting sinking fund bonds which are redeemable from the sinking fund of the city of New York, the water sinking fund of the city of New York, the rapid transit sinking fund of the city of New York or the general sinking fund. Notwithstanding any inconsistent provision of section two hundred ninety-three, such additional sinking funds shall be established with such terms and conditions as the comptroller shall prescribe.