用原子吸收光谱法间接测定有机硅环体中微量氯

INDIRECT DETERMINATION OF TRACE CHLORINE IN ORGANOSILICON CYCLIC COMPOUNDS BY ATOMIC ABSORPTION SPECTROMETRY

研究了以甲醇钠甲醇溶液分解有机硅环体,硝酸银沉淀溶液中氯离子,用原子吸收光谱法间接测定有机硅环体中氯含量的分析方法。本方法快速、简便、灵敏度高、重现性好。氧含量在5ppm时,回收率大于90％。最大相对标准偏差不超过10％。此法对测定其他有机化合物中的微量氯也有一定的实用价值。

The indirect determination of trace chlorine in organosilicon cyclic compounds was carried out by decomposing the organosilicon cyclic compounds with CH3ONa-CH3OH solution, precipitating the chlorine ion in the solution with silver nitrate, and determining the trace chlorine by atomic absorption spectrometry. This determination method was rapid, convenient, high sensitivity and good reproducibility.When the chlorine content was 5 ppm, the recovery > 90%, the maximum relative standard deviation < 10%. The method is also available for the determination of trace chlorine in other organic compounds.