紫外分光光度法测定脱硫灰中硝酸盐氮

Determination of Nitrate-Nitrogen in Desulfurization Ash by Ultraviolet Spectrophometry

研究了用紫外分光光度法测定脱硫灰中的硝酸盐氮的方法。确定了用水溶解样品,并在酸性条件下用氨基磺酸掩蔽溶液中亚硝酸盐氮以消除干扰的方法,讨论了试样溶解时间、掩蔽剂用量及掩蔽时间等试验条件对实验结果的影响。实验表明,紫外分光光度法测定脱硫灰中的硝酸盐氮操作简便、准确度高、精密度高、分析速度快。

The determination of nitrate nitrogen in desulphurization ash by ultraviolet spectrophotometry was studied. The method of dissolving the sample with water and masking nitrite nitrogen with amino sulfonic acid under acidic conditions was determined. The influences of sample dissolution time, amount of masking agent and masking time on the experimental results were discussed. The experiment result shows that the determination of nitrate nitrogen in desulphurization ash by ultraviolet is simple, accurate, precise and fast.