摘要
本文采用卡尔曼滤波算法,以酸性铬蓝K与钙、镁的显色体系同时测定钙和镁,利用单纯形优化法确定显色反应的最佳条件,基于测量数据精密度的要求选择了合适的测量波长范围,同时以甲基异丁基酮草取及氢氧化物沉淀法分离共存的干扰离子,用于实际铁矿石样品分析,所得结果较满意。
alman-filtering spectrophotometry isdescribed in this paper for simultaneous de-termination of calcium and magnesium in Ca(Mg)-acid chrome blue K system.The modi-fied simplex method is used to determine the optimum conditions of complexing reac-tions, The suitable range of measuring wave-lengths is selected on the basis of the de-mand for the precision of measuring data.The interference from some common ionscan effectively be eliminated by methylisobutyl ketone(MIBK)extraction and hy-droxide precipitation, The method has beenapplied to determine calcium and magnesiumin iron ores and tap water with satisfactoryresults.
出处
《分析试验室》
CAS
CSCD
北大核心
1996年第2期29-33,共5页
Chinese Journal of Analysis Laboratory
关键词
卡尔曼滤波
铁矿石
钙
镁
分光光度法
Kalman-filitering
multi-component photometry
iron ore
Ca and Mgdetermination