Preconcentration And Determination Of Nickel Ions Using Silica With Functional Groups Of Sulfonic Derivatives Of Nitroso Naphthols

IF 0.7 Q4 CHEMISTRY, ANALYTICAL
A. K. Trofimchuk, S. Didukh, A. Mukhina, V. Losev
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引用次数: 1

Abstract

Silica based adsorbents modified with polyhexamethylene guanidine and sulfonic derivatives of nitroso naphthols - nitroso-N salt (NNS) and nitroso-R salt (NRS), have been proposed for preconcentration and solid-phase photometric determination of Ni(II) in industrial solutions. Adsorbents with the surface concentration of the reagents of 1.5 and 3 μmol/g have been studied. Adsorbents with NNS functional groups quantitatively extract Ni(II) at pH 5.5-7.5, while with NRS functional groups – at pH 5.5-7.0, giving complex compounds with the composition Ni(II) : Reagent = 1 : 3. After Ni(II) adsorption the adsorbents became orange (λ = 510 нм) or brown (λ = 490 нм) for NNS and NRS respectively. The pH range of maximum color intensity coincides with the pH range of the quantitative extraction of Ni(II). The procedure of solid-phase photometric determination of Ni(II) in form of diffuse reflectance spectroscopy has been developed. The analytical range of the procedure is 0.1 – 3.0 μg of Ni(II) per 0.1 g of the adsorbent with the surface concentration of the reagent of 1.5 μmol/g and 0.15 – 6 μg of Ni(II) per 0.1g of the adsorbent with the surface concentration of the reagent of 3 μmol/g. The procedure was used for determination of Ni(II) in the rinsing and waste waters of galvanic manufactory. The results accuracy was confirmed by ICP-OES analysis.
含亚硝基萘酚磺酸衍生物官能团的二氧化硅预富集测定镍离子
用聚己亚甲基胍和亚硝基萘酚磺酸衍生物亚硝基n盐(NNS)和亚硝基r盐(NRS)改性二氧化硅基吸附剂,用于工业溶液中Ni(II)的预富集和固相光度法测定。研究了表面浓度为1.5 μmol/g和3 μmol/g的吸附剂。具有NNS官能团的吸附剂在pH 5.5-7.5定量提取Ni(II),而具有NRS官能团的吸附剂在pH 5.5-7.0定量提取Ni(II),得到复合化合物Ni(II)的组成:试剂= 1:3。Ni(II)吸附后,NNS和NRS的吸附剂分别为橙色(λ = 510 нм)和棕色(λ = 490 нм)。最大显色强度的pH范围与定量提取Ni(II)的pH范围一致。建立了用漫反射光谱法固相光度法测定Ni(II)的方法。该方法的分析范围为:当试剂表面浓度为1.5 μmol/g时,每0.1g吸附剂的Ni(II)含量为0.1 ~ 3.0 μg;当试剂表面浓度为3 μmol/g时,每0.1g吸附剂的Ni(II)含量为0.15 ~ 6 μg。用该方法测定了某电厂洗液和废水中镍的含量。ICP-OES分析证实了结果的准确性。
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来源期刊
CiteScore
1.00
自引率
14.30%
发文量
12
期刊介绍: The journal "Methods and objects of chemical analysis" is peer-review journal and publishes original articles of theoretical and experimental analysis on topical issues and bio-analytical chemistry, chemical and pharmaceutical analysis, as well as chemical metrology. Submitted works shall cover the results of completed studies and shall make scientific contributions to the relevant area of expertise. The journal publishes review articles, research articles and articles related to latest developments of analytical instrumentations.
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