论文部分内容阅读
本文讨论了在碱性溶液中采用高碘酸钾法测定ADA脱硫液中的酒石酸钾纳。方法分样品处理和测定过程两部分。前者用硝酸处理,除去和氧化ADA液中还原性物质,过滤后调节溶液PH值到9.0—9.5,后者加高碘酸钾在100℃水浴中氧化裂解40分钟。然后加钼酸盐隐蔽过量高碘酸钾,加冰醋酸调节溶液PH值到2.8—3.5,加碘化钾后用0.1N Na_2S_2O_3标准溶液滴定。含量在1克/升左右的酒石酸钾钠ADA液。回收率可达98.7％。
This article discusses the potassium periodate method for the determination of potassium tartrate in ADA desulfurization solutions in alkaline solution. Methods divided into sample processing and determination of two parts. The former is treated with nitric acid to remove and oxidize the reducing substances in the ADA liquid. After filtering, the solution is adjusted to pH 9.0-9.5, and the latter is subjected to oxidative cleavage in a water bath at 100 ° C for 40 minutes. Then add molybdate hidden excess potassium periodate, add glacial acetic acid to adjust the PH value to 2.8-3.5, add potassium iodide with 0.1N Na2S2O3 standard solution titration. Content of 1 g / l of sodium potassium tartrate ADA solution. The recovery rate can reach 98.7%.