Simultaneous determination of copper, nickel, cobalt and zinc using zincon as a metallochromic indicator with partial least squares

Ghasemi, Jahan B.; Ahmadi, Shahin; Torkestani, K.

doi:10.1016/s0003-2670(03)00556-7

Cited by 73 publications

(38 citation statements)

References 18 publications

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“…Latent variables (LVs) were calculated to explain the diagnostic relevant variations rather than the significant differences in the data set [24]. The optimal number of LVs included in a PLS model and the performance of the PLS model were validated in an unbiased manner using a leave-one-out cross-validation method [25]. The correlation coefficient (R), R 2 , and the rootmean standard error (RMSE) were calculated to assess the fitting of the models.…”

Section: Data Processing and Analysismentioning

confidence: 99%

Leukemia cells detection based on electroporation assisted surface-enhanced Raman scattering

Lin

et al. 2017

Biomed. Opt. Express

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Abstract:In this study, an electroporation-based surface-enhanced Raman scattering (SERS) technique was employed to differentiate the human myeloid leukemia cells from the normal human bone marrow mononuclear cells with the aim to develop a fast and label-free method for leukemia cell screening. The Ag nanoparticles were delivered into living cells by electroporation, and then high quality SERS spectra were successfully obtained from 60 acute promyelocytic leukemia cells (HL60 cell line), 60 chronic myelogenous leukemia cells (K562 cell line) and 60 normal human bone marrow mononuclear cells (BMC). Principal component analysis (PCA) combined with linear discriminant analysis (LDA) differentiated the leukemia cell SERS spectra (HL60 plus K562) from normal cell SERS spectra (BMC) with high sensitivity (98.3%) and specificity (98.3%). Furthermore, partial least squares (PLS) approach was employed to develop a diagnostic model. The model successfully predicted the unidentified subjects with a diagnostic accuracy of 96.7%. This exploratory work demonstrates that the electroporation-based SERS technique combined with PCA-LDA and PLS diagnostic algorithms possesses great promise for cancer cell screening.

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Section: Data Processing and Analysismentioning

confidence: 99%

Leukemia cells detection based on electroporation assisted surface-enhanced Raman scattering

Lin

et al. 2017

Biomed. Opt. Express

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“…Of these analytical methods, colorimetric 5,6 and UV-Vis spectrophotometry [7][8][9][10][11][12] techniques are widely used owing to their rapidity and simplicity. However, due to the low Fe 3+ /Fe 2+ content in tap water, the overlap of absorption spectra in the bright area and the unsuitability of the superimposed curve for quantitative evaluation, 13,14 these traditional methods have typically been used to simultaneously determine iron and other ions in plating solutions, circulating water, desalinated water, and feed.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Determination of Iron Ions Based on a Resonance Raman (RR) Probe-Phenanthroline

et al. 2017

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In this paper, we demonstrate a new promising resonance Raman (RR)-based method for the determination of Fe 3+ concentrations in aqueous solutions. Iron ions were quantified at a low concentration range by employing hydroxylamine hydrochloride as the reductant, and phenanthroline as the complexing agent, thereby reducing Fe 3+ to Fe 2+ . The addition of Fe 3+ to the detection reagent resulted in a rapid color change from colorless to orange-red, together with an obvious new RR band appearing at 1459 cm -1 . Herein, the RR intensity of the phenanthroline-Fe 2+ complex strengthened with increasing Fe 3+ concentration, which was identified from the variation of the Raman spectra. Therefore, we successfully detected Fe 3+ at lower concentrations using the proposed method, illustrating its great potential for the detection of Fe 3+ with abundant RR fingerprint information. More importantly, the proposed method exhibited a wide liner range from 0.05 to 10 μg/mL.

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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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Simultaneous determination of copper, nickel, cobalt and zinc using zincon as a metallochromic indicator with partial least squares

Cited by 73 publications

References 18 publications

Leukemia cells detection based on electroporation assisted surface-enhanced Raman scattering

Leukemia cells detection based on electroporation assisted surface-enhanced Raman scattering

Quantitative Determination of Iron Ions Based on a Resonance Raman (RR) Probe-Phenanthroline

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

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