| 摘要 |
PCT No. PCT/FR94/00350 Sec. 371 Date Nov. 23, 1994 Sec. 102(e) Date Nov. 23, 1994 PCT Filed Mar. 29, 1994 PCT Pub. No. WO94/23291 PCT Pub. Date Oct. 13, 1994The invention relates to the amperometric detection of nitrite ions and nitrogen monoxide by electrocatalytic reduction by means of electrodes (15) modified by an electronically conductive polymer film such as poly-(N-methyl pyrrole) doped by mixed heteropolyanions of formulas:[MIIIX1W11O39(H2O)]n- or[MIIIX22W17O61(H2O)]7-in which M represents Fe, Rh, Al, Ga, In or Tl, X1 represents P or As and n is equal to 4, X1 represents Si or Ge and n is equal to 5, or X1 represents B and n is equal to 6, and X2 represents P or As. It also relates to the films and modified electrodes used.
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