Abstract Silver ions Ag(I) and silver nanoparticles (AgNPs) in solution could be separated using aminopropylsilica (SiAP) as a solid adsorbent prior to a determination by inductively coupled plasma-optical emission spectrometry (ICP-OES). The extraction of both silver species from a binary mixture occurred rapidly within 5 min at the optimal pH 3. The adsorption behavior was illustrated by the Langmuir model at 298 K and the maximum adsorption capacity of SiAP for Ag(I) ions and AgNPs was 52.91 and 34.01 mg g−1, respectively. The selective desorption of Ag(I) ions and AgNPs was successful using thiourea. The proposed method was applied for the determination of silver species in household products.

中文翻译：

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在 ICP-OES 测定之前通过基于二氧化硅的固相萃取分离银离子和银纳米颗粒

摘要 在通过电感耦合等离子体发射光谱法 (ICP-OES) 测定之前，可以使用氨基丙基二氧化硅 (SiAP) 作为固体吸附剂分离溶液中的银离子 Ag(I) 和银纳米粒子 (AgNPs)。在最佳 pH 值为 3 时，在 5 分钟内从二元混合物中快速提取两种银物质。 Langmuir 模型说明了在 298 K 下的吸附行为，SiAP 对 Ag(I) 离子和 AgNPs 的最大吸附容量为 52.91和 34.01 mg g-1，分别。使用硫脲成功地对 Ag(I) 离子和 AgNPs 进行了选择性解吸。所提出的方法用于测定家用产品中的银种类。