全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Shabnam Shahida , Akbar Ali , Muhammad Haleem Khan
来源:[J].Journal of the Iranian Chemical Society(IF 1.467), 2014, Vol.11 (1), pp.1-8Springer
摘要:Abstract(#br)A very sensitive, selective and simple flow injection time-based method was developed for on-line preconcentration and determination of thorium(IV) at micro g L –1 levels in environmental samples. The system operation was based on thorium(IV) ion retention at pH 4...
作者:Shabnam Shahida , Akbar Ali , Muhammad Haleem Khan
来源:[J].Journal of the Iranian Chemical Society(IF 1.467), 2013, Vol.10 (3), pp.461-470Springer
摘要:Abstract(#br)An on-line scandium preconcentration and determination method was developed with spectrophotometer associated with flow injection. Scandium from aqueous sample solution of pH 4.5 was selectively retained in the minicolumn containing XAD-4 resin impregnated with nali...
作者:Suelen Santana Lins , Cesário Francisco Virgens , Walter Nei Lopes dos Santos ...
来源:[J].Microchemical Journal(IF 2.879), 2019, Vol.150Elsevier
摘要:Abstract(#br)In the present work is described a new on-line solid-phase extraction system using a novel ion imprinted polymer as adsorbent for the preconcentration and determination of mercury(II) in natural water samples by Cold Vapor Atomic Fluorescence Spectrometry (CV AFS)....
作者:Dadfarnia Shayessteh , Shabani Ali Mohammed Haji , Dehghani Zahra
来源:[J].Journal of the Brazilian Chemical Society(IF 1.283), 2006, Vol.17 (3), pp.548DOAJ
摘要:The present study examines the possibility of immobilization of stearic acid on microcrystalline naphthalene for preparation of microcolumn and evaluation of its potential for adsorption and preconcentration of trace amounts of metal ions. It was found that this sorbent has hi...
作者:Dadfarnia Shayessteh , Shabani Ali Mohammed Haji , Dehghani Zahra
来源:[J].Journal of the Brazilian Chemical Society(IF 1.283), 2006, Vol.17 (3), pp.548-554DOAJ
摘要:The present study examines the possibility of immobilization of stearic acid on microcrystalline naphthalene for preparation of microcolumn and evaluation of its potential for adsorption and preconcentration of trace amounts of metal ions. It was found that this sorbent has hi...
作者:Sezen Sivrikaya , Bülent Karslı , Mustafa Imamoglu
来源:[J].International Journal of Environmental Research(IF 1.818), 2017, Vol.11 (5-6), pp.579-590Springer
摘要:In this study, a novel method for determination of Pd(II) ions at trace level was developed using on-line preconcentration onto polyamine group bonded silica (PA-SG) with flame atomic absorption spectrometric determination. Pd(II) uptake dynamics of PA-SG was studied batchwise...
作者:A.M. Haji Shabani , S. Dadfarnia , T. Moosavinejad ...
来源:[J].Química Nova(IF 0.737), 2009, Vol.32 (5), pp.1202-1205DOAJ
摘要:A simple and sensitive on-line flow injection system for determination of zinc with FAAS has been described. The method is based on the separation and preconcentration of zinc on a microcolumn of immobilized Alizarin Red S on alumina. The adsorbed analyte is then eluted with 2...
作者:César Ricardo Teixeira Tarley , Sérgio Luis Costa Ferreira , Marco Aurélio Zezzi Arruda
来源:[J].Microchemical Journal(IF 2.879), 2004, Vol.77 (2), pp.163-175Elsevier
摘要:Abstract(#br)The use of rice husks as an alternative adsorbent in an on-line preconcentration system for Cd (II) and Pb (II) determination by flame atomic absorption spectrometry (FAAS) is described. The potential of rice husks as a natural adsorbent was evaluated as a material...
作者:Yu. Malinina , M. Ya. Kamentsev , L. N. Moskvin ...
来源:[J].Journal of Analytical Chemistry(IF 0.616), 2017, Vol.72 (12), pp.1239-1242Springer
摘要:A procedure is developed for the determination of several amines in drinking and natural waters by capillary electrophoresis with isotachophoretic on-line preconcentration without sample preparation. A background electrolyte based on acridine as an absorbing ion is proposed f...
作者:Rou Fang , Ling-Xiao Yi , Yu-Xiu Shao ...
来源:[J].Journal of Liquid Chromatography & Related Technologies(IF 0.565), 2014, Vol.37 (10), pp.1465-1497Taylor & Francis
摘要:... However, a small sample size and a short optical path length make the low concentration samples detected with an ultraviolet (UV) detector difficult or even impossible without sample preconcentration. The on-line concentrating techniques promise to extremely increase sample s...

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