Department of Chemistry, Faculty of Sciences, Imam Khomeini International University, Qazvin, Iran.
J Hazard Mater. 2011 May 15;189(1-2):371-6. doi: 10.1016/j.jhazmat.2011.02.047. Epub 2011 Feb 23.
The octadecyl silica cartridge as a sorbent and 4-bp db (1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene) as a ligand is a simple, rapid and reliable method for extracting and preconcentrating of Hg(II) in real samples prior to cold vapor atomic absorption spectrometry. Sample solutions were passed through a column at pH 4.5 then retained mercury ions on the column were eluted with minimal amount of 0.01 M nitric acid with 3 mL min(-1) flow rate. The effect of pH, type of buffer, flow rate of sample and eluent, type and volume of the eluent were investigated and optimized. At optimum effective parameters, concentration factor and detection limit were achieved 128 and 1.87 ng L(-1), respectively.
十八烷基硅烷固相萃取小柱结合 4-联吡啶-2,3-二亚胺（1,4-二(4-吡啶基)-2,3-二氮杂-1,3-丁二烯）作为配体，是一种简单、快速、可靠的方法，可用于在冷原子吸收光谱法测定前从实际样品中萃取和预浓缩汞(II)。在 pH 值为 4.5 时，将样品溶液通过柱，然后用最小量的 0.01 M 硝酸以 3 mL min(-1)的流速洗脱柱上保留的汞离子。考察并优化了 pH 值、缓冲液类型、样品和洗脱液的流速、洗脱液的类型和体积的影响。在最佳有效参数下，实现了 128 的浓缩因子和 1.87ng L(-1)的检测限。
