利用砷与钼酸铵生成砷钼杂多酸比色测定微量砷为常见方法。而利用钼的灵敏的极谱性能间接测定多晶硅中的磷、天然水中的砷和高纯铟中的硅已有报导,但这类方法操作条件均较为严格,且需经过较冗长的分离手续,因而使钼形成的杂多酸盐在极谱应用上受到局限。 Colorimetric determination of arsenic and molybdenum heteropolyacid by arsenic and ammonium molybdate is a common method. Indirect determination of phosphorus in polysilicon, arsenic in natural water, and silicon in high-purity indium by utilizing the polarographic polarographic sensitivity of molybdenum have been reported. However, the operating conditions of such methods are relatively strict and need to undergo relatively long separation procedures, Thus, heteropolyacid salts formed by molybdenum are limited in polarographic applications.