【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％ 。更多还原

【Abstract】 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.更多还原