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5 -磺基 -8-羟基喹啉用作微柱流动注射在线分离、富集和电感耦合等离子体质谱分析流程中的螯合剂 ,与铅反应生成铅螯合物被硅酸镁吸附剂吸附 ,实现痕量铅的分离、富集。对联用系统的参数如螯合剂用量、淋洗条件、洗脱条件和进样量等进行最优化 ,测定标准水样和加标海水的铅回收率分别为 1 0 1 %和 97.9% ,相对标准偏差为± 0 .98% ,检测限为 0 .2 0 4 μg/ L。可应用于生物、环境等高盐样品中铅的在线分离测定
5-Sulfo-8-hydroxyquinoline is used as a chelating agent in on-line separation, enrichment and inductively coupled plasma mass spectrometry analysis for micro-column flow injection. Lead is reacted with lead to form lead chelate and adsorbed by magnesium silicate adsorbent. Achieve the separation and enrichment of trace lead. The parameters of the combined system, such as chelating agent dosage, elution conditions, elution conditions and injection volume, were optimized. The recovery rates of lead in standard water sample and spiked seawater sample were 101% and 97.9%, respectively. The relative standard The deviation was ± 0.98% with a detection limit of 0.224 μg / L. It can be applied to the on-line separation and determination of lead in biological and environmental high salt samples