摘要
建立了测定螯合剂螯合铁能力的分光光度法。采用试剂空白作参比，在505nm处测体系吸光度，考察了显色剂用量、显色稳定时间和pH对测定结果的影响。工作曲线线性范围为0～0．4mmoL／L，加标回收率在98．8％～100％之间，结果表明该方法操作简便、可靠、重现性好，适于螯合剂螯合铁能力的测定。
Fe （Ⅲ） ion chelating power was determined by spectrophotometry. The absorbance of the system was recorded at 505 nm against a second system with a blank solution of reagent. The influence of developer dosage, stable time and pH was studied. The absorbency was linear to the concentration of Fe （ Ⅲ ） in the range of 5.0 - 100 μg/mL. Good recovery results were also obtained with the range of 98.8% - 100%. The results indicated that the method was suitable for Fe （Ⅲ ） ion chelating power with good convenience, accuracy and recovery.
出处
《清洗世界》
CAS
2009年第3期23-25,37,共4页
Cleaning World
关键词
螯合剂
分光光度法
磺基水杨酸
铁离子
chelating agent
spectrophotometry
sulfosalicylic acid
iron ion
