摘要
研究了利用微波消解技术对钨矿石样品进行消解,并采用硫氰酸盐分光光度法测定钨矿石中钨的含量。微波消解溶剂为40 mL NaOH溶液(25 g/L),微波火力为中高火,微波消解时间30 min。对各试剂用量进行了探讨,方法检出限为0.5μg/mL。对钨矿石样品进行分析,测定结果与传统溶样方法的结果相吻合,相对标准偏差小于2.3%。
Microvave digestion method was applied in the determination of tungsten in tungsten ore by thioeyanate spectrophotometry. The digestion solvent was 40 mL of NaOH solution （25 g/L）. The microwave power was medium-high level. The digestion time was 30 rain. The dosages of all reagents were investigated. The detection limit of this method was 0.5 μg/mL. The tungsten ore was analyzed by the proposed method and the determination results were consistent with those obtained by the traditional sample preparation methods. The relative standard deviation （RSD） was less than 2.3 %.
出处
《冶金分析》
CAS
CSCD
北大核心
2009年第10期73-75,共3页
Metallurgical Analysis
关键词
微波高压消解
分光光度法
钨矿
钨
microwave high-pressure digestion
spectrophotometry
tungsten ore
tungsten
