钨、三氧化钨、钨酸钠以及纯钨及其化合物中微量硅的测定,文献采用国产717强碱性[SO_4]~(-2)型阴离子交换树脂吸附钨,1.5N氢氧化钠淋洗硅,然后用硅钼蓝法测定。因氢氧化钠试剂难以纯化,空白值大。本文以[Cl~-]型吸附钨,以水淋洗硅,又参照文献的测定方法,从而降低了空白值,提高了灵敏度,可测定0.00X％的硅。 Tungsten, tungsten trioxide, sodium tungstate and pure tungsten and trace silicon compounds, the literature using domestic 717 strong alkaline [SO_4] -2 anion exchange resin adsorption tungsten, 1.5N sodium hydroxide leaching Silicon, then silicon molybdenum blue method. Due to the difficulty of sodium hydroxide reagent purification, a large blank value. In this paper, [Cl ~ -] type adsorption of tungsten, water rinse silicon, and reference to the literature determination method, thereby reducing the blank value and improve the sensitivity of 0.00X% of the silicon can be determined.