Fe^(3+)磺基水杨酸显色分光光度法测定水中氟含量  

Determination of F-in Fe^(3+)-sulfosalicylic acid system by spectrophotometry

作　　者：徐应兴[1] 魏艳[1] 陈红梅[1] 

机构地区：[1]浙江传化股份有限公司,浙江杭州311215

出　　处：《清洗世界》2010年第7期26-28,共3页Cleaning World

摘　　要：以Fe3+为络合剂,磺基水杨酸为显色剂建立了分光光度法测定氟离子。采用试剂空白作参比,在500nm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0.4~4μg/mL。对2μg/mL氟离子溶液进行8次平行测定,其相对标准偏差为0.38%。该法能较好地适用水中氟离子的测定。A new spectrophotometric method for the determination of F^- was studied. The absorbanee of the system was recorded at 500 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 mass concentration of F- in the range of 0. 4 -4 p,g/mL. The relative standard deviation is 0. 37% for 2μg/mL F- （ n = 8 ）. The method has been used to the determination of F- in water with satisfactory results. Key words： fluorine ion, iron ion, spectrophotometry, sulfosalicylie acid

关 键 词：氟离子 铁离子 分光光度法 磺基水杨酸 

分 类 号：TS529[轻工技术与工程—皮革化学与工程]