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- W207958205 abstract "制备了负载5-(2-羟基-5-硝基苯偶氮)-硫代若丹宁(HNATR)的多孔石墨化碳黑并用作分离金的固相萃取柱填充剂。含金样品以1.0 mol/L的磷酸介质过柱,金定量吸附在小柱上,用0.1 mol/L的硫代硫酸钠洗脱小柱上富集的金,可实现样品中低浓度金的高倍数富集和与大部分干扰离子的分离。用火焰原子吸收光谱法测定洗脱液中的金,在选定实验条件下,吸光度与Au(Ⅲ)含量在0.05~3.0μg/mL范围内呈线性关系,线性回归方程的相关系数r=0.999 6;方法用于矿石和环境水样中金的测定,相对标准偏差在2.2" @default.
- W207958205 created "2016-06-24" @default.
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- W207958205 date "2008-05-30" @default.
- W207958205 modified "2023-09-28" @default.
- W207958205 title "以负载5-(2-羟基-5-硝基苯偶氮)-硫代若丹宁石墨化碳黑作吸附剂的固相萃取-火焰原子吸收光谱法测定金" @default.
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