流动注射化学发光法同时测定Mn^(2+)和Co^(2+)  

SIMULTANEOUS DETERMINATION OF Mn(Ⅱ) AND Co(Ⅱ) BY FLOW INJECTION CHEMILUMINESCENCE METHOD

作　　者：伍莉萍[1] 杨秀岑[1] 金靓 张明[1] 李力[1] 曹红梅[1] 

机构地区：[1]华西医科大学药学院,成都610041

出　　处：《华西药学杂志》1999年第4期245-247,共3页West China Journal of Pharmaceutical Sciences

摘　　要：利用 Ｎａ Ｉ Ｏ４鲁米诺流动注射化学发光法，以 ８羟基喹啉掩蔽 Ｍ ｎ２＋ 以外的其它金属离子，柠檬酸钠掩蔽 Ｍ ｎ２＋ 和 Ｃｏ２＋ 以外的金属离子，达到同时测定 Ｍ ｎ２＋ 和 Ｃｏ２＋ 的目的。 Ｍ ｎ２＋ 离子的检测限达０１９４ ｎｇ／ｍ ｌ，ｒ＝ ０．９９８４，线性范围（１０－ ９～１０－ ７）ｇ／ｍ ｌ，回收率 ８８．０％ ～１０７．６％ ，测定 Ｒ Ｓ Ｄ 为 １．４２％ 。 Ｃｏ２＋ 离子的检测限达 １．７１７ ｎｇ／ｍ ｌ，ｒ＝ ０．９９９３，线性范围（１０－ ８ ～１０－ ６）ｇ／ｍ ｌ，加标回收率 ８７．８％ ～１１５５％ ，测定 Ｒ Ｓ Ｄ 为 １．９６％ 。Luminol NaIO 4 system was used for flow injection chemiluminescence analysis and simultaneous determination of Co 2+ and Mn 2+ .In the presence of 8 hydroxy quinolin, only Mn 2+ catalyses the luminescence reaction, most ions encountered being masked. Using sodium citrate as a masking reagent, Co 2+ and Mn 2+ can be simultaneously measured. The dynamic range was 10 -9 ～10 -7 ( r =0 9984) and 10 -8 10 -6 g/ml( r =0.9993), for Mn 2+ and Co 2+ , respectively, with a detection limit of 0.194 ng/ml for Mn 2+ , and 1.717 ng/ml for Co 2+ .The recovery rate of standard addition were 88.0%～107 6% and 87.8%～115.5%,and RSD were 1.42% and 1.96%, for Mn 2+ and Co 2+ , respectively.

关 键 词：化学发光 流动注射 锰 钴 高碘酸钠 

分 类 号：O614.711[理学—无机化学] O614.812[理学—化学]