Spectrophotometric Determination of Zirconium in Thorium

Silverman, Louis; Hawley, D. W.

doi:10.1021/ac60113a009

Cited by 16 publications

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although strong claims are made for the specificity and sensitivity of NAA, ICP-AES and ICP-MS, some of the interferences cause problems [11]. Therefore, spectrophotometric methods for thorium and rare earths continue to be of interest [12][13][14].…”

mentioning

confidence: 99%

Statistical Calibration of Model Solution of Analytes

Simeonov¹,

Spasov²,

Simeonova³

2012

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

Abstract:A new method based on spectrophotometric-partial least-squares procedure was proposed for simultaneously determination of thorium and zirconium using SPADNS (4,5-Dihydroxy-3-(p-sulfophenylazo)-2,7-naphthalene disulfonic acid, trisodium salt) as a color reagent. Absorbance measurements were made in the range of λ = 541÷620 nm with 1.0 nm steps in buffered solutions at pH 3.5. The linear ranges were obtained for 0.5÷11.5 and 1.5÷14.5 µg cm -3 for Th 4+ and Zr 4+ ions, respectively. The limits of detection were determined 0.4 and 1.2 µg cm -3 for thorium and zirconium, respectively. The standard deviation (n = 3) and recovery percent of 10 samples in the prediction set were obtained in the amplitude 0.22÷0.38 µg cm -3 and 91.3÷109.2, respectively. The proposed method was used for simultaneously determination of mentioned ions in spiked real water samples and wastewater. The results show that the method is applicable for the analysis of samples with similar matrix.

show abstract

mentioning

confidence: 99%

Statistical Calibration of Model Solution of Analytes

Simeonov¹,

Spasov²,

Simeonova³

2012

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

show abstract

“…The molybdenum analyses were done by the method of Ellis and Olson (! ); the titanium analyses by the method of Hastings, McClarity, and Broderick (.3); the magnesium analyses by the method of Harvey, Komarmy, and Wyatt (3); the vanadium analyses by the method of Karchmer (5); the zirconium by the method of Silverman and Hawley (10); the copper analyses by the method of Snell (11).…”

mentioning

confidence: 99%