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本文首次研究了新试剂氟磺酸9,10-二甲基吖啶(DMAF)的发光性能和新化学发光体系DMAF-KOH-H_2O_2-AuCl_4~-的反应机理,建立了一种测定痕量金的新化学发光分析方法。该方法体系简单,选择性良好,灵敏度高,检测限为0.3ng/mL,工作曲线的线性范围0.5～800ng/mL,测定200ng/mL和10ng/mL金标准溶液的相对标准偏差分别为5.0%和6.2%。该方法特别稳定,金试液放置8h,对化学发光反应基本无影响。
In this paper, the luminescent properties of the new reagent fluoromethanesulfonic acid 9,10-dimethylacridine (DMAF) and the reaction mechanism of the new chemiluminescence system DMAF-KOH-H 2 O 2-AuCl 4 ~ - were studied. A new method for the determination of trace gold New chemiluminescence analysis method. The method has the advantages of simple system, good selectivity, high sensitivity, a detection limit of 0.3ng / mL and a linear range of 0.5 ~ 800ng / mL for the working curve. The relative standard deviations of 200ng / mL and 10ng / mL gold standard solutions were 5.0% And 6.2%. The method is particularly stable, gold test solution placed 8h, almost no effect on chemiluminescence reaction.