新催化光度法测定铝土矿中锰含量

Determination of manganese content in bauxite by catalytic spectrophotometry

建立了新催化动力学光度法测定铝土矿中锰含量的方法。该方法的线性范围为0μg/L^3.2μg/L,检测限为3.5×10-6g/L,相对标准偏差RSD=0.93%(n=11),回收率98.00%~100.33%,测定结果与国家标准方法一致。用此法进行铝土矿中锰含量的测定,具有操作容易、结果准确、重现性好的特点。

Determination of manganese in bauxite with a new catalytic spectrophotometry is established. The linear scope of the method is 0μg/L～3.2μg/L, measurement limit is 3.5×10^-6g/L, relative standard deflection is RSD = 0.93% （n = 11 ）, recovery rate is 98.00% - 100.33% and the measurement result is in conformity with the national standard method. It has the characteristics of easy operation, accurate result and good repetition rate determining manganese in bauxite with such method.