【摘要】 产品碳酸铵中硫含量很低,无法采用常规分析方法直接检测。本文通过对碳酸铵进行预处理,选择合适的分析条件,通过手动重量输入法,采用LECO CS 344碳硫红外分析仪进行测定。方法准确度较高,灵敏度好,测定结果与碘量法一致。标准偏差RSD<0 005%(n=8),方法回收率99 2%～101 2%。更多还原

【Abstract】 It is difficult to determine trace sulphur in ammonium carbonate by normal analytical methods.In the analytical method used in this study, the IR-spectrometric C/S analyzer LECO-CS-344 is used to determine trace sulphur in pretreated ammonium carbonate with suitable analytical conditions and manual addition of flux,with high precision and sensitivity.The determining results are in conformity with those determined by combustion-potassium iodate titrimetric method.The RSD is found to be less than 0.005%(n=8),and recoveries are in the range of 99.2%～101.2%.更多还原