Development of surfactant assisted spectrophotometric method for determination of selenium in waste water samples

被引：28
作者：
Agrawal, Kavita [1 ,2 ]
Patel, Khageshwar Singh [2 ]
Shrivas, Kamlesh [1 ]
机构：
[1] Natl Sun Yat Sen Univ, Dept Chem, Kaohsiung 804, Taiwan
[2] Pt Ravishankar Shukla Univ, Sch Studies Chem, Raipur 492010, Madhya Pradesh, India
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 161卷 / 2-3期
关键词：
Selenium; Iodide; Surfactant; Spectrophotometry; ABSORPTION SPECTROMETRIC DETERMINATION; ENVIRONMENTAL-SAMPLES; ELEMENTAL SELENIUM; CENTRAL INDIA; EXTRACTION; SPECIATION; COMBINATION; SEPARATION; FOOD; LEAD;
D O I：
10.1016/j.jhazmat.2008.04.082
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A new, simple and highly selective method for spectrophotometric determination of selenium in waste water samples is described. Selenium(IV) oxidizes I(-) ions into I(2) which Subsequently reacts with excess of I(-) ion in the acidic media to give tri-iodide ions (I(3)(-)), and it further reacts with cetylpyridinium cation (CP(+)) to give a violet colored species. The value of molar absorptivity of the ion-associate species in terms of selenium is 1.80 x 10(4) L mol(-1) cm(-1) at lambda(max) 510 nm. The detection limit of the method is 10 ng mL(-1) Se. The calibration curve is linear over 50-1000 ng mL(-1) Se with slope, intercept and co-relation coefficient of 0.23, -4.0 x 10(-4) and +0.99, respectively. None of the tested diverse ions interfered in the present method. The method has been tested for the determination of selenium in waste water samples. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：1245 / 1249
页数：5
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