电感耦合等离子体原子发射光谱法测定轻质隔墙板中镁钙铝铁锰氯  

ICP-AES Determination of Magnesium,Calcium,Aluminum,Iron,Manganese and Chloride in Light-Weight Partition Board

作　　者：汤燕金[1] 杨建男[2] 

机构地区：[1]上海大学生命科学学院,上海200444 [2]湛江师范学院,化学与科学技术学院,湛江524048

出　　处：《理化检验（化学分册）》2011年第1期68-69,72,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：10 g轻质隔墙板试样溶于8 mol.L-1硝酸溶液100 mL中,于此溶液中定量加入相当于氯离子估计量(物质的量)1.2倍的硝酸银溶液使其中氯离子定量生成AgCl沉淀。经陈化后,将混合物滤入于200 mL容量瓶中,加水定容。分取此溶液一份,用水稀释200倍后,用电感耦合等离子体原子发射光谱法(ICP-AES)测定其中镁、钙及银的含量。所得银的量为定量生成AgCl沉淀后留存的过量硝酸银溶液。按此银的测定值间接换算成试样中氯的含量。从上述定容为200 mL溶液中,另分取一份溶液加水稀释5倍后,按ICP-AES法测定其中痕量铝、铁及锰的含量。按所提出的方法测定了实样中镁、钙、氯及铝、铁、锰的含量,测定值的相对标准偏差(n=6)均小于2%。Ten grams of the sample were dissolved in 100 mL of 8 mol·L^-1 HNO3.A definite amount of AgNO3 solution,1.2 times as much as the equivalent amount（amount of substance） of Cl^-—ion estimated in the sample solution was added to form AgCl precipitate quantitatively.After aging,the mixture was filtered,and the filtrate was diluted to 200 mL in a volumetric flask.An aliquot of the solution was diluted 200 times,and macroamounts of Mg^2＋,Ca^2＋ and Ag＋ ion（i.e.the excess of AgNO3 solution remained in the filtrate） were determined by ICP-AES.Amounts of chloride ion in the solution were calculated indirectly from the analytical results of Ag^＋-ion present in the solution.Another aliquot was taken from the filtrate in the volumetric flask and diluted 5 times,in which traces of Al（Ⅲ）,Fe（Ⅲ） and Mn^2＋ were determined by ICP-AES.The proposed method was used in the determination of Mg^2＋,Ca^2＋,Cl^-and Al（Ⅲ）,Fe（Ⅲ）,Mn^2＋ in a substantial sample,values of RSD′s（n=6） found were all less than 2%.

关 键 词：电感耦合等离子体原子发射光谱法 轻质隔墙板 镁 钙 铝 铁 锰 氯 

分 类 号：O657.31[理学—分析化学]