A Simple and Rapid in situ Preconcentration Method Using Solid-Phase Extraction for the Determination of Dissolved Manganese in Brackish Lake Water Samples
A Simple and Rapid in situ Preconcentration Method Using Solid-Phase Extraction for the Determination of Dissolved Manganese in Brackish Lake Water Samples
复制标题
简单快速的固相萃取原位富集法测定苦咸湖水样中的溶解锰
DOI：
10.2116/analsci.18.1093
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发表时间：
2002
影响因子：
1.6
通讯作者：
Y. Seike
中科院分区：
文献类型：
--
作者：
M. Okumura;Takahiro Anate;K. Fujinaga;Y. Seike
基于固相萃取，采用SEP-Pak C18色谱柱，建立了一种简便、快速的现场预富集测定环境水样中溶解锰的方法。水样中的锰被带入刻度注射器以便于在采样点进行收集操作，在样品采集后立即与4-(2-吡啶偶氮)间苯二酚(PAR)在pH 10下形成稳定的络合物。形成的锰-PAR络合物被Sep-Pak C18柱收集，该柱填充C18键合的二氧化硅。该复合体在Sep-Pak C18盒中至少稳定了一个月。保留络合物用0.5M盐酸定量洗脱。用石墨炉原子吸收光谱法测定锰。该方法成功地应用于半咸水湖泊水样中溶解锰行为的研究。
A simple and rapid in situ preconcentration method for the determination of dissolved manganese in environmental waters has been developed based on solid-phase extraction using a Sep-Pak C18 cartridge. Manganese in water samples, which was taken into a graduated syringe to easily perform the operation for collecting manganese at sampling sites, was converted into a stable complex with 4-(2-pyridylazo)resorcinol (PAR) at pH 10 immediately after sample collection. The formed Mn-PAR complex was collected by a Sep-Pak C18 cartridge, which was packed with C18-bonded silica. The complex was stable in the Sep-Pak C18 cartridge for at least one month. The retained complex was quantitatively eluted with 0.5 M hydrochloric acid. The manganese was determined by graphite-furnace AAS. The proposed method was successfully applicable to brackish lake water samples to investigate the behavior of dissolved manganese in brackish lakes.