On-line micellar-enhanced spectrofluorimetric determination of rhodamine dye in cosmetics

Wang, Chien-Chun; Masi, A.; Fernández, Liliana Patricia

doi:10.1016/j.talanta.2007.10.041

Cited by 37 publications

(34 citation statements)

References 35 publications

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“…Regarding banned dyes, the majority of studies are focused on the determination of Rhodamine B. Given its genotoxic effects, many methods have been exclusively developed for the analysis of this compound [9,25,27,28,36,38,39], and it will be commented on separately. With the exception of these cases, the current trend is the development of methods for the simultaneous analysis of mixtures of colorants: up to 32 for qualitative analysis [32] or 19 for quantitative analysis [26].…”

Section: Analytical Methodologymentioning

confidence: 99%

“…In recent years, several methods have been developed for its determination in cosmetics, especially in lipsticks. In 2008, Wang et al [38] proposed a spectrofluorimetric method with minimal pre-treatment based on dissolution of lipstick in hot water by mechanical stirring. Adding an anionic surfactant during the flow-injection analysis increased the fluorescent sensitivity until 2.5 fold.…”

Section: Sample Preparationmentioning

confidence: 99%

“…Other analytical approaches were reported based on fluorescence measurements [36,38] or voltammetry [37] for the determination of Rhodamine B or Lithol Rubine, respectively. The main advantage of the fluorometric measurement is its high selectivity.…”

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confidence: 99%

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Analysis of Dyes in Cosmetics: Challenges and Recent Developments

2018

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Colour plays a decisive role in the marketing of a cosmetic product. Among thousands of substances used to colour, synthetic dyes are the most widespread in the industry. Their potential secondary effects on human health and different regulatory requirements for their use between the main world markets make analytical control necessary to guarantee the safety of a cosmetic product. However, methodologies for the determination of dyes in cosmetics are scarce with respect to those reported for other cosmetic ingredients such as preservatives or ultraviolet UV filters. In addition, most of the existing methods just consider a part of the total of dyes regulated. On the other hand, many methods have been developed for matrices different than cosmetics such as foodstuff, beverages or wastewater. The current paper reviews the recent developments in analytical methodologies for the control of synthetic dyes in cosmetics proposed in the international scientific literature in the last 10 years (2008)(2009)(2010)(2011)(2012)(2013)(2014)(2015)(2016)(2017)(2018). A trend towards the use of miniaturized extraction techniques is evidenced. Due to the hydrophilic nature of dyes, liquid chromatography is the most usual choice in combination with absorbance detectors and, more recently, with mass spectrometry.

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Section: Analytical Methodologymentioning

confidence: 99%

Section: Sample Preparationmentioning

confidence: 99%

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Analysis of Dyes in Cosmetics: Challenges and Recent Developments

2018

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“…The shielding provided by micelles is confirmed from the measurement of the fluorescence signal (established as a 2.5-fold increase [2]), a direct consequence of additional rigidity of molecular structure, minimizing the rotational movement and thermal fluctuations of monomers dispersed in water [6]. Important applications, based on the enhancement of fluorescence of rhodamines, are described in the literature, such as the quantification of residues of chromophores (rhodamine B) in cosmetics [21]. The consequence of dye monomer encapsulation in the core of micelles is also noticed in measurement of fluorescent lifetime.…”

Section: Introductionmentioning

confidence: 91%

Dye aggregation and influence of pre-micelles on heterogeneous catalysis: A photophysical approach

Macedo

Boni

Misoguti

et al. 2011

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…The use of micellar media has been investigated in order to improve analytical parameters of instrumental methodologies such as sensitivity and selectivity [21][22][23][24][25]. Particularly, micellar enhanced separation method have been extensively studied for removal of heavy metals and organic pollutants by using ultrafiltration membranes [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Surfactant Enhanced Chemofiltration of Zinc Traces Previous to Their Determination by Solid Surphase Fluorescence

Vega¹,

Augusto²,

Talio³

et al. 2011

AJAC

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Surfactant enhanced chemofiltration on Nylon membranes pre-treated with hexadecyltrimethylammonium bromide (HTAB) and eosin dye (eo) is proposed for zinc traces quantification by solid surphase spectrofluorimetry (SSF, λ exc = 532 nm; λ em = 548 nm). Operational variables which have influence on quantitative retention of metal complex have been studied and optimized. At optimal experimental conditions, quantitative recovery was reached with a detection limit of 0.662 pg·L -1 and quantification limit of 2.20 pg·L -1 . The calibration sensitivity was of 1.22 L·pg -1 for the new methodology with a linear range of 2.20 pg·L -1 to 779 pg·L -1 Zn (II). The tolerance levels of potential interfering ions were studied with good results. Recuperation studies were carried out by standard addition method applied to natural water samples (San Juan, Argentine) without previous treatment. The reproducibility (between-days precision) was also evaluated over 3 days by performing five determinations each day. CV% was 0.37. The performing obtained in sensitivity and selectivity thanks to chemofiltration step, converts the proposed methodology in an adequate alternative to conventional techniques for Zn (II) traces determination.

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On-line micellar-enhanced spectrofluorimetric determination of rhodamine dye in cosmetics

Cited by 37 publications

References 35 publications

Analysis of Dyes in Cosmetics: Challenges and Recent Developments

Analysis of Dyes in Cosmetics: Challenges and Recent Developments

Dye aggregation and influence of pre-micelles on heterogeneous catalysis: A photophysical approach

Surfactant Enhanced Chemofiltration of Zinc Traces Previous to Their Determination by Solid Surphase Fluorescence

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