偶氮氯磷Ⅲ光度法快速测定铸铁中的稀土总量

Rapid determination of total rare earth elements in cast iron by spectrophotometric method

摘要:研究了在硝酸介质中,用草酸掩蔽铁等干扰离子~([1]),于670nm(偶氮氯磷Ⅲ与稀土的络合物最大吸收波长)处测定铸铁中稀土总量的方法。试验结果显示,该方法分析速度快、准确度高,能够满足日常生产的检测需求。

Abstract:The method of determining the total amount of rare earth elements in iron by interfering ions ~ ([1]) with oxalic acid masking iron and the maximum absorption wavelength of 670nm (P, P, P, P, P, and rare earth complexes) was studied. The test results show that the method is fast and accurate, and can meet the needs of daily production.

正文快照:?0引吕^.,n.^、壬铸铁中加人稀土,能提高铸铁的性能。适量的稀土一方面可以促进石墨球化,另一方面克服了硫及其他杂质元素的影响以保证球化效果。但是稀土含量过高会出现各种变态形的石墨,白口倾向也增大,所以稀土含量的检测就显得尤为重要。偶氮氯磷1光度法测定铸铁中的稀