等离子体发射光谱法同时测定大洋富钴结壳中硅锰铁钙镁铝钛

Simultaneous Determination of Si, Mn, Fe, Ca, Mg, Al and Ti in Co-rich Crusts from Ocean by ICP-AES

大洋富钴结壳试样经HCl+HNO3+HF溶解 ,在 0 .2mol/LHF和 0 .1 3mol/LH3BO3介质中 ,用感耦等离子体发射光谱法同时测定Si、Mn、Fe、Ca、Mg、Al、Ti元素的含量。方法经国家标准物质GBW 0 72 4 9大洋多金属结核验证 ,其结果与标准值相符 ,精密度RSD <3.2 % (n =6) ;已应用于太平洋富钴结壳中多元素分析。

A method for simultaneous determination of Si, Mn, Fe, Ca, Mg, Al and Ti in Co rich crusts from the Pacific Ocean by ICP AES was developed. Samples were dissolved in mixed acid (HCl+HNO 3+HF) and in a medium of 0.2 mol/L HF and 0.3 mol/L H 3BO 3.7 elements mentioned above were simultaneously determined by ICP AES. The method has been evaluated by analysis of oceanic polymetallic nodule reference material (GBW 07249). The results are in agreement with certified values with precision of <3.2% RSD ( n =6). The method has been applied to multi element analysis in Co rich crusts from the Pacific Ocean.