【摘要】 用直接燃烧 红外吸收光谱法测定粉煤灰中硫酸盐。在1300℃,加WO3作助熔剂,直接燃烧试样释出SO2,然后用红外吸收光谱法测定。结果准确,操作快速。分析一份试样的时间由原来重量法的8～9h缩短至现方法的4min。更多还原

【Abstract】 Sulfates in powdered coal ash were determined by combusting the sample at 1 300℃ with WO₃ as fluxing agent, and the sulfate liberated as SO₂ was determined by the IR-absorption spectrometry. The time of a determination was shortened from 8～9hrs to 4min for one sample.更多还原