The acidity of HPA is inversely related tothe kinetic energy of O KL_(23)L_(23) Auger transition.

• 从OKL_1L_1与OKL_(23)L_(23)俄歇峰强度之比,求出氧成键时增加电荷,进一步表明了杂多酸中氧原子成键情况。