Characterization of sulfonated azo dyes and aromatic amines by pyrolysis gas chromatography/mass spectrometry

Rehorek, Astrid; Plum, Alexander

doi:10.1007/s00216-007-1390-0

Cited by 47 publications

(20 citation statements)

References 13 publications

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“…In fact, it has reached nearly 100,000 different types of dyes and annually produce over 7.0x10 5 tonnes per year worldwide [3][4][5][6][7][8]. Loss of up to 40% dye during the dyeing process are the result of coloured wastewater that passed into the environment or treatment plants [10]. The coloured wastewater are unpleasant and heavily pollute the environment.…”

Section: Introductionmentioning

confidence: 99%

Factor Affecting Textile Dye Removal Using Adsorbent From Activated Carbon: A Review

2017

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Abstract. Industrial company such as textile, leather, cosmetics, paper and plastic generated wastewater containing large amount of dye colour. The removal of dye materials are importance as the presence of this kind of pollutant influence the quality of water and makes it aesthetically unpleasant. As their chemical structures are complicated, it is difficult to treat dyes with municipal waste treatment operations. Even a small quantity of dye does cause high visibility and undesirability. There have been various treatment technique reviewed for the removal of dye in wastewater. However, these treatment process has made it to another expensive treatment method. This review focus on the application of adsorbent in dye removal from textile wastewater as the most economical and effective method, adsorption has become the most preferred method to remove dye. The review provides literature information about different basis materials used to produce activated carbon like agricultural waste and industrial waste as well as the operational parameters factors in term of contact time, adsorbent dosage, pH solution and initial dye concentration that will affect the process in removing textile dye. This review approach the low cost and environmental friendly adsorbent for replacing conventional activated carbon.

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Section: Introductionmentioning

confidence: 99%

Factor Affecting Textile Dye Removal Using Adsorbent From Activated Carbon: A Review

2017

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“…Generally, separation of azo dyes can be performed by gas chromatography (GC), 14,15 high performance liquid chromatography (HPLC), 16,17 and capillary electrophoresis (CE). 18,19 However, some azo dyes (e.g., sulfonated dyes) are non-volatile and thermally unstable, so they can not be determined by GC.…”

Section: Introductionmentioning

confidence: 99%

Ultrasonic Extraction Coupled with Capillary Electrophoresis for the Determination of Azo Dyes in Lipsticks Using Ionic Liquid as Dynamic Coating and Background Electrolyte

Wang

et al. 2011

Chin. J. Chem.

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A simple and rapid method based on ultrasonic extraction and capillary electrophoresis using 1-butyl-3-methylimidazolium tetrafluoroborate as dynamic coating and background electrolyte was developed. The method was applied to the separation and determination of three azo dyes in two lipsticks. To increase extraction rate and yield, lipstick samples were coated on a glass slide before ultrasonic extraction. The dyes were extracted by ultrasonic extraction for 30 min, and then determined by capillary electrophoresis. Several experimental factors, such as ionic liquid concentration, pH value of background electrolyte and applied voltage, were examined and optimized. Under the optimal conditions, three azo dyes were completely separated within 12 min, and the detection limits for the three azo dyes ranged from 0.33 to 0.88 µg/mL. The recoveries were in the range of 96.8% to 108.8%.

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“…Several papers have described the applications of new analytical procedures for the determination of dyes in various matrices such as food , textile , wastewater , urine, fish tissue, and animal feed . The Separation of azo dyes can be performed by GC , HPLC , and CE .…”

Section: Introductionmentioning

confidence: 99%

Electrically enhanced liquid‐phase microextraction of three textile azo dyes from wastewater and plant samples

Nojavan

Tahmasebi

Bidarmanesh

et al. 2013

J of Separation Science

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An electromembrane extraction procedure coupled with HPLC and visible detection was applied for the extraction of three textile azo dyes as organic salts. The extraction parameters such as extraction time, applied voltage, pH range, and concentration of salt added were optimized. A driving force of 60 V was applied to extract the analytes through 2-nitrophenyl octyl ether, used as the supported liquid membrane, into a neutral aqueous solution. This method required 20 min extraction time from a neutral sample solution. The proposed microextraction technique provided good linearity with correlation coefficients from 0.996 to 0.998 over a concentration range of 1.0-1000.0 ng/mL. The LODs of dyes were 0.30-0.75 ng/mL, while the reproducibility ranged from 6.7 to 12.9% (n = 6). Also, enrichment factors of 96-162 that corresponded to the recoveries ranging from 48 to 81% were achieved. Finally, the application of this new method was demonstrated on wastewater samples and some plants grown in contaminated environments. Excellent selectivity was obtained as no interfering peaks were detected.

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Characterization of sulfonated azo dyes and aromatic amines by pyrolysis gas chromatography/mass spectrometry

Cited by 47 publications

References 13 publications

Factor Affecting Textile Dye Removal Using Adsorbent From Activated Carbon: A Review

Factor Affecting Textile Dye Removal Using Adsorbent From Activated Carbon: A Review

Ultrasonic Extraction Coupled with Capillary Electrophoresis for the Determination of Azo Dyes in Lipsticks Using Ionic Liquid as Dynamic Coating and Background Electrolyte

Electrically enhanced liquid‐phase microextraction of three textile azo dyes from wastewater and plant samples

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