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详细地研究了吸附在热解石墨电极表面的ＳｉＭｏ１２Ｏ４０４－以及Ｄｙ（ＳｉＭｏ１１Ｏ３９）２１３－和吸附在玻碳电极表面的Ｐ２Ｗ１８Ｏ６２６－的电化学行为，结果表明这些杂多化合物修饰电极在酸性条件下均对ＮＯ２－的还原有很好的催化作用，其催化电流与ＮＯ２－的浓度的平方根里线性关系。
The electrochemical behaviors of SiMo12O404- and Dy (SiMo11O39) 213- adsorbed on the surface of pyrolytic graphite electrode and P2W18O626- adsorbed on the surface of glassy carbon electrode were studied in detail. The results showed that these heteropoly compound-modified electrodes were all acidic under acidic conditions NO2- reduction has a good catalytic effect, the catalytic current and NO2- concentration of the square root of the linear relationship.