硝酸浓度及积分时间对火焰原子吸收法测定铁、锰、镍、铜和锌的影响研究  

Effect of The Concentration of Nitric Acid and The Integrated Time on Determination of Fe,Mn,Ni,Cu and Zn by FAAS

作　　者：冯丽[1] 李海霞[2] 秦青[2] 李纳[2] 但德忠[1] 

机构地区：[1]四川大学建筑与环境学院,成都610065 [2]四川省环境监测中心站,成都610041

出　　处：《四川环境》2007年第5期8-11,共4页Sichuan Environment

摘　　要：针对火焰原子吸收法测定铁、锰、镍、铜和锌时遇到的问题,考察了溶液中硝酸浓度及积分时间对测定结果的影响,发现保持标准系列与被测样品中的硝酸浓度一致有利于提高分析结果的准确性;采用5 s的积分时间可提高测定铁和镍的准确度和精密度。In order to solve the problems encountered in determination of Fe,Mn,Ni,Cu and Zn by FAAS method,the effect of the concentration of nitric acid and the integrated time on determination results was studied in this paper.It was found that to keep the concentration of nitric acid in sample solutions and the standard solutions identical would be beneficial to obtain accurate results.Besides,prolongation of the integrated time（5s was used） would improve the accuracy and precision of determination for iron and nickel.

关 键 词：火焰原子吸收 硝酸浓度 积分时间 

分 类 号：X13[环境科学与工程—环境科学]