离子色谱法同时测定硝酸锶中硫酸盐及亚硫酸盐的含量  

Determination of sulfate and sulfite contents in strontium nitrate by ion chromatography method at same time

作　　者：王妍[1] 

机构地区：[1]中海油天津化工研究设计院,天津300131

出　　处：《无机盐工业》2014年第11期59-61,共3页Inorganic Chemicals Industry

摘　　要：当硫酸盐和亚硫酸盐共存时，对硝酸锶中这2种杂质的测定存在一定的难度。建立了同时测定工业硝酸锶样品中的硫酸盐及亚硫酸盐含量的离子色谱方法。采用ICS-1500型离子色谱仪，选取IonPacASl8作为色谱分离柱，以氢氧化钾进行梯度洗脱，电导检测器检测，线性相关系数达到0．9994-0．9996，加标回收率为8714％～100．8％，相对标准偏差2．9％～3．2％。该方法准确、快速，在生产检测中具有重要意义。When sulfate and sulfite coexisted, the determination of these two impurities in strontium nitrate was difficult.Si- multaneous determination method of sulfate and sulfite contents in strontium nitrate by ion chromatography method was es- tablished. The ICS-1500 ion chromatography and IonPac AS18 as chromatographic separation column were selected.The KOH gradient elution and conductivity detector were used by determination.The linear correlation coefficient was reported at 0.999 4--0.999 6 and the recovery ratio was at 87.4%~100.8%.The relative standard deviation was at 2.9%-3.2%.h was proved that this method was accurate, fast, and meaningful in the production tests.

关 键 词：离子色谱 硝酸锶 硫酸盐 亚硫酸盐 

分 类 号：TQ125.14[化学工程—无机化工]