Partial least-squares regression for the simultaneous determination of aluminum and beryllium in geochemical samples using xylenol orange

Madrakian, Tayyebeh; Afkhami, Abbas; Borazjani, Marjan; Bahram, Morteza

doi:10.1016/j.saa.2004.11.012

Cited by 32 publications

(17 citation statements)

References 13 publications

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“…Be(II) can be determined in the presence of other cations if EDTA is used as a masking agent. Also Al( ) does not interfere, when its concentration is up to 100-fold of Be(II), even without using EDTA unlike other previous methods [4][5][6][32][33][34]. The proposed method is rapid, simple, and selective enough to be used for trace amount determination of beryllium in different type of samples such as beryl, rock, and alloys.…”

Section: Discussionmentioning

confidence: 97%

Spectrophotometric determination of trace amounts of beryllium using 1,8-dihydroxyanthrone as a new chromogenic reagent

Beiraghi¹,

Babaee²

2007

JICS

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A simple, rapid, and sensitive spectrophotometric method for the trace level determination of beryllium based on the formation of a 1:2 complex with anthralin (1,8-dihydroxyanthrone) as a new reagent is developed. A spectrophotometric method was used to determine the acidity constant and stepwise proton dissociation of the reagent. The experimental conditions for determining beryllium including the influences of pH, reagent concentration and time were evaluated and optimized. Under the optimum experimental conditions, the molar absorptivity of the complex is 0.47 × 10 4 l mol -1 cm -1 at 545 nm. Calibration graph was linear in the range of 0.04-1.04 μg ml -1 with a detection limit of 0.012 μg ml -1 and a %RSD of 0.43%, for 5 replicate determinations at 0.48 μg ml -1 of Be( ). The interferring effect of some cations and anions was also studied. The method was applied for the determination of beryllium in beryl, silicate rock and alloys. Ethylenediaminetetraacetic acid (EDTA) was used for masking interfering ions.

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Section: Discussionmentioning

confidence: 97%

Spectrophotometric determination of trace amounts of beryllium using 1,8-dihydroxyanthrone as a new chromogenic reagent

Beiraghi¹,

Babaee²

2007

JICS

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“…have been used for the simultaneous determination of these ions in different samples. Among the most widely used analytical methods are those based on the UV-Vis spectrophotometric techniques [6][7][8][9][10][11][12][13] due to the resulting experimental rapidity, simplicity and the wide application. However, the simultaneous determination of these ions by the use of the traditional spectrophotometric techniques is difficult because, generally, the absorption spectra overlap in a bright region and the superimposed curves are not suitable for quantitative evaluation.…”

Section: Introductionmentioning

confidence: 99%

H-Point Standard Addition Method for Simultaneous Determination of Zinc and Nickel in Micellar Media

Rohilla¹,

Gupta²

2012

Chem Sci Trans

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Abstract:The H-point standard addition method (HPSAM) has been applied for simultaneous determination of Zn(II) and Ni(II) at trace levels, using Alizarin Red S (ARS) as chromogenic reagent. Both Ni(II) and Zn(II) form red colored complex with Alizarin red S at pH 7.0 which are soluble in triton x-100. Zn(II) and Ni(II) have been determined simultaneously in the concentration range of 0.320-4.55 µg/mL and 0.293-4.676 µg/mL respectively with satisfactory accuracy and precision. The results of applying H-point standard addition method show that Zn(II) and Ni(II) ions can be determined simultaneously with concentration ratio of 15:1 and 1:16 of Zn(II) to Ni(II). This method is based on the difference in the absorbance of Zn(II) and Ni(II) -ARS complexes at pH 7.0 using different wavelength pairs.

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“…14 These methods are not suitable when non-linearity is observed in the system. Artificial neural networks (ANNs) have attracted the interest of many researches in the field of chemistry as modeling tools for multivariate calibrations.…”

Section: Introductionmentioning

confidence: 99%

Comparative Determination of Phosphate and Silicate Using Molybdenum Blue by Radial Basis Function and Feed-Forward Neural Networks Assisted by Principal Component Analysis

Afkhami

Tarighat

2008

ANAL. SCI.

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Partial least-squares regression for the simultaneous determination of aluminum and beryllium in geochemical samples using xylenol orange

Cited by 32 publications

References 13 publications

Spectrophotometric determination of trace amounts of beryllium using 1,8-dihydroxyanthrone as a new chromogenic reagent

Spectrophotometric determination of trace amounts of beryllium using 1,8-dihydroxyanthrone as a new chromogenic reagent

H-Point Standard Addition Method for Simultaneous Determination of Zinc and Nickel in Micellar Media

Comparative Determination of Phosphate and Silicate Using Molybdenum Blue by Radial Basis Function and Feed-Forward Neural Networks Assisted by Principal Component Analysis

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