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本文研究了Mn~(2+)和Co~(2+)对7-(8-羟基-3,6-二磺基萘偶氮)-8-羟基喹啉-5-磺酸-硼砂反应体系的混合荧光增敏作用。实验条件下,荧光增敏强度满足线性加和关系的范围是:Mn~(2+)浓度0～2.9×10~(-7)mol/L;Co~(2+)浓度0～8.8×10~(-7)mol/L;总浓度不超过1.0×10~(-6)mol/L。检出限量为Mn~(2+)4.5×10~(-9)mol/L和Co~(2+)1.4×10~(-8)mol/L。实现了Mn~(2+)和Co~(2+)的连续测定。
In this paper, the effects of Mn 2+ and Co 2+ on the reaction of 7- (8-hydroxy-3,6-disulfonaphthoazo) -8-hydroxyquinoline-5-sulfonic acid- The mixed fluorescence sensitization. Under the experimental conditions, the ranges of the linear increase in fluorescence enhancement sensitivity are: Mn 2+ concentration 0-2.9 × 10 -7 mol / L, Co 2+ concentration 0-8.8 × 10 -2 ~ (-7) mol / L; the total concentration does not exceed 1.0 × 10 -6 mol / L. The detection limits were 4.5 × 10 -9 mol / L Mn 2+ and 1.4 × 10 -8 mol / L Co 2+. The continuous determination of Mn ~ (2+) and Co ~ (2+) was achieved.