Cloud-Point Extraction for Preconcentration and Platinum Determination Using Spectrophotometry in Environmental Samples

被引：4

作者：

Amin A.S. ^{[1
]}

Nassar M.Y. ^{[1
]}

机构：

[1] Chemistry Department, Faculty of Science, Benha University, Benha

来源：

Analytical Chemistry Letters | 2017年 / 7卷 / 01期

关键词：

Cloud-point preconcentration; Environmental analysis; Platinum(IV) determination; Spectrophotometry;

D O I：

10.1080/22297928.2017.1294992

中图分类号：

学科分类号：

摘要：

The present work outlines novel, simple and sensitive method to determine platinum using spectrophotometry after separation and preconcentration by cloud point extraction. The methodology was successfully applied for platinum determination using synthesized reagent 5-(2′,4′-dimethylphenylazo)-6-hydroxy-pyrimidine-2,4-dione (DMPAHPD), as complexing agent and Triton X-100 added as nonionic surfactant, respectively. Variable parameters such as pH, concentration of the reagent and Triton X-100, equilibrating temperature and centrifuging time were studied to enhance the sensitivity and extraction efficiency of the proposed method. Under optimum conditions the detection limit was found as 0.9 ng mL−1 for platinum in different environmental matrices. The present method was successfully applied for the determination of platinum in vegetable, soil, water, catalysis and ore samples. The results show good agreement with reported methods. © 2017 Har Krishan Bhalla & Sons.

引用

页码：128 / 141

页数：13

共 76 条

[1]

Hees T., Wenclawiak B., Lustig S., Schramel P., Schwarzer M., Schuster M., Verstraete D., Dams R., Helmers E., Distribution of platinum group elements (Pt, Pd, Rh) in environmental aand clinical matrices: Composition, analytical techniques and scientific outlook, Environ. Sci. Pollut. Res. Int., 5, pp. 105-111, (1998)

[2]

Cubelic M., Pecoroni R., Schafer J., Eckhardt J.D., Berner Z., Stuben D., Verteilung verkehrsbedingter Edelmetallimmissionen in Böden, Umweltwiss Schadst Forsch, 9, pp. 249-258, (1997)

[3]

Farago M.E., Kavanagh P., Blanks R., Kelly J., Kazantzis G., Thornton I., Simpson P.R., Cook J.M., Parry S., Hall G.E.M., Platinum metal concentrations in urban road dust and soil in the United Kingdom, Fresenius J. Anal. Chem., 354, pp. 660-663, (1996)

[4]

Giussani B., Roncoroni S., Nemenyi A., Santo V.D., Monticelli D., Recchia S., Anodic stripping tin titration: a method for the voltammetric determination of platinum at trace levels, Anal. Chem., 86, pp. 6654-6659, (2014)

[5]

Rotko K.T., Rotko M., Voltammetric determination of platinum at a lead film electrode in environmental water samples, Envir. Mon. & Asses., 186, pp. 7801-7806, (2014)

[6]

Mazloomifar A., Shiekhi P., Dispersive liquid-liquid microextraction and determination of platinum(IV) by high performance liquid chromatography, Oriental J. Chem., 31, pp. 1299-1305, (2015)

[7]

Devi P.S.R., Chavan T.A., Ajith N., Dalvi A.A., Swain K.K., Wagh D.N., Verma R., Evaluation of uncertainty in the energy dispersive X-ray fluorescence determination of platinum in alumina, Anal. Meth., 7, pp. 5345-5351, (2015)

[8]

Fornieles A.C., de Torres A.G., Alonso E.V., Pavon J.M.C., Simultaneous determination of traces of Pt, Pd, and Ir by SPE-ICP-OES, Test for chemical vapor generation. Microchem. J., 124, pp. 82-89, (2016)

[9]

Zhang N., Ma Y., Shen Y., Gao X., Determination of platinum, palladium, ruthenium, rhodium, and iridium in ultrabasic rock from the great dyke of zimbabwe by inductively coupled plasma-optical emission spectrometry, Anal. Lett., 47, pp. 2072-2079, (2014)

[10]

Dobrowolski R., Mroz A., Otto M., Kury⁳o M., Development of sensitive determination method for platinum in geological materials by carbon slurry sampling graphite furnace atomic absorption spectrometry, Microchem. J., 121, pp. 18-24, (2015)

← 1 2 3 4 5 6 7 8 →