On-line microdialysis–high-performance liquid chromatographic determination of aniline and 2-chloroaniline in polymer industrial wastewater

Jen, Jen-Fon; Chang, Chien-Cheng; Yang, Thomas C.

doi:10.1016/s0021-9673(01)01185-2

Cited by 52 publications

(30 citation statements)

References 39 publications

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“…The anion Cl − was identified as one of the end products during the photodecay process of 2-ClA [8]. When the pH level of the aqueous media was lower than 6.25, the generated Cl − may decrease the photodecay rate of the TiO 2 .…”

Section: Uv + Tiomentioning

confidence: 99%

“…The probe in this study, 2-chloroaniline (2-ClA), belongs to the anilines family, which is frequently used as starting substances for chemical synthesis in polymer, rubber, pharmaceutical and dye industries [8,9]. USEPA [10] reported that it could retain in the environment as degradation products of various pesticides and it would undergo a more persistence chemical bonding with humic materials when released to soil.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The effect of solution pH and peroxide in the TiO2-induced photocatalysis of chlorinated aniline

Chu

Choy

2007

Journal of Hazardous Materials

167

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Section: Uv + Tiomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The effect of solution pH and peroxide in the TiO2-induced photocatalysis of chlorinated aniline

Chu

Choy

2007

Journal of Hazardous Materials

167

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“…Standard stock solutions (1000 mg l −1 ) of 6 ] IL were described in our previous study [13]. All of the other chemicals and solvents were of analytical reagent grade and ultrapure water (EASY-pure LF) was used throughout.…”

Section: Reagents and Chemicalsmentioning

confidence: 99%

“…High-performance liquid chromatography (HPLC) is most frequently used for the determination of chlorinated anilines [6][7][8], and sample pretreatment is usually required. Current sample pretreatment methods for wastewater samples involve solid-phase extraction (SPE) [9], solid-phase microextraction (SPME) [10], liquid-liquid extraction (LLE) [11], and supported liquid membrane extraction (SLM) [12].…”

Section: Introductionmentioning

confidence: 99%

Ionic liquid for high temperature headspace liquid-phase microextraction of chlorinated anilines in environmental water samples

Peng

Liu

Jiang

et al. 2005

Journal of Chromatography A

125

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Based on the non-volatility of room temperature ionic liquids (IL), 1-butyl-3-methylimidazolium hexafluorophosphate ([C 4 MIM][PF 6 ]) IL was employed as an advantageous extraction solvent for high temperature headspace liquid-phase microextraction (LPME) of chloroanilines in environmental water samples. At high temperature of 90• C, 4-chloroaniline, 2-chloroaniline, 3,4-dichloroaniline, and 2,4-dichloroaniline were extracted into a 10 l drop of [C 4 MIM] [PF 6 ] suspended on the needle of a high-performance liquid chromatography (HPLC) microsyringe held at the headspace of the samples. Then, the IL was injected directly into the HPLC system for determination. Parameters related to LPME were optimized, and high selectivity and low detection limits of the four chlorinated anilines were obtained because the extraction was performed at high temperature in headspace mode and the very high affinity between IL and chlorinated anilines. The proposed procedure was applied for the analysis of the real samples including tap water, river water and wastewater samples from a petrochemical plant and a printworks, and only 3,4-dichloroaniline was detected in the printworks wastewater at 88.2 g l −1 level. The recoveries for the four chlorinated anilines in the four samples were all in the range of 81.9-99.6% at 25 g l −1 spiked level.

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“…Therefore, pretreatments that take short time, use little or no organic solvents, and are friendly to analysts have led to the development of new techniques of extraction. In recent years, miniaturized techniques have been developed such as solid-phase microextraction (SPME) [11,13,15,40], membrane-assisted solvent extraction (MASE) [19], liquid-phase microextraction (LPME) [20,44], stir bar sorptive extraction (SBSE) [35,48], and online microdialysis [34]. In 2006, polymer monolith microextraction (PMME) was introduced as an alternative to SPME, which is based on the use of a capillary monolithic column [49].…”

Section: Introductionmentioning

confidence: 99%

Determination of nitroanilines in hair dye using polymer monolith microextraction coupled with HPLC

Xiao

Bao

Jia

et al. 2011

J of Separation Science

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In this study, a novel method for the determination of nitroanilines in hair dye samples has been developed based on poly(methacrylic acid-co-ethylene glycol dimethacrylate) monolith microextraction (PMME) and high-performance liquid chromatography (HPLC) analysis. Four nitroanilines, p-nitroaniline (PNAL), m-nitroaniline (MNAL), o-nitroaniline (ONAL), and 2,4-dinitroaniline (DNAL), are studied as representatives. To obtain optimum extraction efficiency, several experimental parameters including sample flow rate, sample volume, sample pH, and eluent flow rate have been investigated. Under the optimal experimental conditions, the linear regression coefficients of the standard curves are greater than 0.9990. The limits of detection for p-nitroaniline, m-nitroaniline, o-nitroaniline, and 2,4-dinitroaniline are 0.012, 0.008, 0.018, and 0.005 μg/mL, respectively. The intraday and interday relative standard deviations are less than 3.1 and 5.4%, respectively. The proposed method is simple, rapid, sensitive, and competent when used for the determination of nitroanilines in hair dye samples and the accuracy is assessed through recovery experiments.

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On-line microdialysis–high-performance liquid chromatographic determination of aniline and 2-chloroaniline in polymer industrial wastewater

Cited by 52 publications

References 39 publications

The effect of solution pH and peroxide in the TiO2-induced photocatalysis of chlorinated aniline

The effect of solution pH and peroxide in the TiO2-induced photocatalysis of chlorinated aniline

Ionic liquid for high temperature headspace liquid-phase microextraction of chlorinated anilines in environmental water samples

Determination of nitroanilines in hair dye using polymer monolith microextraction coupled with HPLC

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