VIS absorption spectrophotometry of disperse dyes

Golob, Vera; Tušek, Lidija

doi:10.1016/s0143-7208(98)00055-2

Cited by 33 publications

(13 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The formation of suspensions must be avoided in optical measurements, in order to ensure compliance with the Beer-Lambert Law. 35 It is therefore vital to select an appropriate solvent or additive, as well as the best solvent/ water ratio. Wetting of the particles by the liquid phase, deagglomeration of particle aggregates by mechanical destruction, stabilization of the dispersed suspension, and prevention of reagglomeration are required for successful dye dissolution and dispersion.…”

Section: Resultsmentioning

confidence: 99%

Spectrophotometric evaluation of the behavior of disperse red 1 dye in aqueous media and its interaction with calf thymus ds-DNA

Uliana¹,

Garbellini²,

Yamanaka³

2012

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

A espectrofotometria UV-Vis foi utilizada para medir a solubilidade do corante disperso red 1 (DR1) em soluções aquosas, com diferentes solventes e dispersantes. O corante foi quantificado em amostras de águas, e sua interação com o ds-DNA de timo de vitelo foi investigada. Os resultados mostraram que o dispersante comercial Fongranal ® FB foi adequado para a preparação das soluções aquosas do DR1. Para a determinação de DR1 em água pura, o limite de detecção foi de 2,47 × 10 -6 mol L . Porcentagens de recuperação de 91,2 e 103% foram obtidas para as concentrações de DR1 em 3,00 × 10 -6 e 40,0 × 10 -6 mol L -1 , respectivamente. As recuperações alcançadas de DR1 em água de torneira e de rio ficaram na faixa de 85,9-113%. A interação de DR1 com o DNA de timo de vitela foi acompanhada por efeitos de hipocromismo e hipercromismo, que foram relacionados à mudanças conformacionais e lesão na dupla hélice do DNA.UV-Vis spectrophotometry was used to measure the solubility of disperse red 1 (DR1) dye in aqueous solutions, using different solvents and dispersants. The dye was quantified in water samples, and its interaction with calf thymus ds-DNA was investigated. The results showed that the commercial dispersant Fongranal ® FB was suitable for the preparation of aqueous DR1 solutions. For the determination of DR1 in purified water, the limit of detection was 2.47 × 10 -6 mol L -1, and the limit of quantification was 8.22 × 10 -6 mol L -1. Percentage recoveries of 91.2 and 103% were obtained for DR1 concentrations of 3.00 × 10 -6 and 40.0 × 10 -6 mol L -1, respectively. The recoveries achieved for DR1 present in tap and river water were in the range 85.9-113%. The interaction of DR1 with calf thymus DNA was accompanied by hypochromic and hyperchromic effects, which were related to conformational changes and damage to the DNA double helix.Keywords: disperse red 1, textile dye, solubility, ds-DNA IntroductionSynthetic dyes can be defined as intensely colored substances that, when applied to a material, give it color that exhibits some degree of permanence.1 These dyes are extensively used in the textile, food processing, and leather tanning industries, as well as in paper production and agricultural products.1 The textile dyes show considerable structural diversity, and can be classified according to either the chromophore (including azo, anthraquinone, indigoid and triphenylmethyl groups) or the method of attachment to the textile fiber (direct, basic, acidic, reactive, disperse, etc.). 1,2 An estimated 700,000 to 850,000 tons of dyes are produced worldwide each year, and 26,500 tons per year are consumed in Brazil. 3,4 An amount equivalent to approximately 20-50% of the quantity of textile dyes used is released into natural waters due to losses that occur during the process of fixing the dye to the fibers.5 Dyes are potentially harmful to the environment and human health. [6][7][8][9] According to Resolution N. 357 of the National Environment Council of Brazil (CONAMA), 10 dyes derived from anthropogenic sources should...

show abstract

Section: Resultsmentioning

confidence: 99%

Spectrophotometric evaluation of the behavior of disperse red 1 dye in aqueous media and its interaction with calf thymus ds-DNA

Uliana¹,

Garbellini²,

Yamanaka³

2012

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…In the analysis of waste water containing disperse dyes, the presence of water cannot be eliminated, and therefore the choice of a suitable organic solvent to be added, and the determination of an optimum mixture aqueous dispersion/organic solvent is of great importance in the visible spectroscopy of disperse dyes [25]. In this study, aqueous/organic solvent ratio of 40/60 (v/v) was used.…”

Section: Adsorbent and Adsorbatementioning

confidence: 99%

Removal of disperse dye from aqueous solution by novel adsorbent prepared from biomass plant material

Gerçel

Koparal

et al. 2008

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…12 In investigations of the dyeing process, the dye uptake is usually followed by spectrophotometric analyses of the dyebath, and the dye concentration is calculated according to the BeerLambert's law. 22 However this method is limited to simple samples of dyes. In this work, we proposed the simultaneous determination of three dyes: Procion Yellow HE4R, Procion Red HE7B and Remazol Black 5 (Fig.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of the Textile Dyes in Industrial Effluents by First-Order Derivative Spectrophotometry

et al. 2009

View full text Add to dashboard Cite

A first-order derivative spectrophotometric method for the simultaneous determination of three textile dyes, Procion Yellow HE4R, Procion Red HE7B and Remazol Black 5 (RB5), has been developed. The effects of pH, heating and ionic strength of the solution on the absorption spectra of the dyes were investigated. The wavelengths selected for the measures of the derivative signals of HE4R (395 nm , respectively. The reliability and reproducibility of the method were tested and showed recovery values of 95.7 to 109%. The proposed method was applied for the determination of dyes in binary and ternary mixtures of textile effluents and showed an estimate of the loss of dyes for the effluents between 6.67 and 28.9%.

show abstract

VIS absorption spectrophotometry of disperse dyes

Cited by 33 publications

References 1 publication

Spectrophotometric evaluation of the behavior of disperse red 1 dye in aqueous media and its interaction with calf thymus ds-DNA

Spectrophotometric evaluation of the behavior of disperse red 1 dye in aqueous media and its interaction with calf thymus ds-DNA

Removal of disperse dye from aqueous solution by novel adsorbent prepared from biomass plant material

Simultaneous Determination of the Textile Dyes in Industrial Effluents by First-Order Derivative Spectrophotometry

Contact Info

Product

Resources

About