Single Drop Microextraction Analytical Technique for Simultaneous Separation and Trace Enrichment of Atrazine and its Major Degradation Products from Environmental Waters Followed by Liquid Chromatographic Determination

Yohannes, Alula; Tolesa, Tesfaye; Merdassa, Yared; Megersa, Negussie

doi:10.4172/2155-9872.1000330

Cited by 10 publications

(12 citation statements)

References 43 publications

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“…The proposed SDME method of extraction and pre-concentration of the studied picric acid explosive, some important experimental parameters, such as volume of extraction and extraction time were investigated and optimized [14]. In standard, the amount of 0.1M picric acid analytes extracted with the Dichloromethane organic drop is proportional to the drop volume when other parameters such as extraction time, organic solvent and pH level are unchanged.…”

Section: Study On Sdme Technique:-mentioning

confidence: 99%

Electrochemical Detection of Picric Acid Using Glassy Carbon Electrode Modified Reduced Graphene Oxide by Single-Drop Microextraction Method.

Ihuomah¹,

Ihuoma²,

Sonaimuthu³

2018

IJAR

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The reduced graphene oxide composite-modified glassy carbon electrode (rGO/GCE) was developed as a simple, selective and sensitive electrochemical sensor for determination of picric acid (PA). The rGO was obtained by reduction of graphene oxide obtained via Hummer's method. The synthesised rGO was characterized using Fourier transform infrared spectroscopy (FTIR) and transmission Electron microscopy (TEM). GCE was modified with rGO and the electrochemical properties of the bare and modified electrode were investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The results obtained showed that the modified electrode exhibited more excellent electrochemical properties than the bare GCE. The optimum conditions for detection of PA in water using CV and EIS were as follows: deposition potential at 100 mV/s, pH 2, and 0.5 M H 2 SO 4 was used as supporting electrolyte. The linear regression equation obtained was I (μA) = 0.6432C + 7.2359 and the detection limit were calculated to be 0.65 μg L −1 .

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Section: Study On Sdme Technique:-mentioning

confidence: 99%

Electrochemical Detection of Picric Acid Using Glassy Carbon Electrode Modified Reduced Graphene Oxide by Single-Drop Microextraction Method.

Ihuomah¹,

Ihuoma²,

Sonaimuthu³

2018

IJAR

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“…Since this variable had a non-significant effect and the presence of salt also caused drop instability, the following extractions were performed without NaCl addition (Cortada et al, 2009). SDME was successfully applied for the extraction of atrazine and its major degradation products from environmental waters (Yohannes et al, 2016). The effect of salt concentration on the extraction of the analytes by adding different quantities of NaCl varied from 2.5 to 15 % (w/v) was investigated.…”

Section: Salt Addition and Phmentioning

confidence: 99%

“…Therefore, pH 7.0, where all the target compounds are deionized for efficient transfer into the extraction solvent, was chosen as the optimum sample solution pH. Neutral pH has also been noted as adequate, for SDME extraction of cyanazine, simazine and atrazine by Ye et al in 2007(Yohannes et al, 2016Ye et al, 2007). A small bell-mouthed extraction device for single-drop microextraction (SDME) is a new approach developed by Ye et al (Ye et al, 2007).…”

Section: Salt Addition and Phmentioning

confidence: 99%

Influence of relevant parameters on the extraction efficiency and the stability of the microdrop in the single drop microextraction

Zichová

Brisudová

Hrouzková

2018

Acta Chimica Slovaca

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Single drop microextraction technique uses microamounts of organic solvents. Simplicity, low cost, low environmental impact, compatibility with chromatographic systems as well as its applicability to different matrices are main advantages of single drop microextraction. This technique has become frequently used for the extraction of a broad scope of compounds for numerous analytical applications. This review provides an overview of the existing single drop microextraction modes of realisation and the main scope is devoted to the optimization of parameters influencing the efficiency. The state of the art is discussed on the basis of examples selected from representative application areas. Extraction parameters for toxic organic compounds extraction and microdrop stability were evaluated.

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“…Extraction time is one of the important factor in the extraction procedures. The microextraction technique is timedependent since the target analyte mass transfer is the time-dependent process [11]. In this study, the extraction time in the range of 2 to 15 minutes was investigated with other optimized parameters remained unchanged.…”

Section: (A)mentioning

confidence: 99%

“…Desorption time in the range of 2 to 20 minutes was investigated with other experimental conditions remained unchanged in order to achieve the maximum recovery of BPA. The microextraction technique is time-dependent and the analyte transfer from the C 18 -CTA composite films to the solvent is also a time-dependent process [11]. Figure 3(a) indicates the peak area increased from 2 to 10 minutes and then dropped significantly from 10 to 20 minutes.…”

Section: (A)mentioning

confidence: 99%

Extraction of Bisphenol a in Environmental Water and Soft Drink by C18-Impregnated Cellulose Triacetate Composite Film

2018

MJAS

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Bisphenol A (BPA) is an industrial chemical applied in making polycarbonate and epoxy resin that commonly used as food containers, beverage cans and baby bottles. BPA could be discharged into the environment from industrial waste and sewage treatment plant which then causing adverse effects to aquatic organism and consumers. Micro-solid phase extraction (µ-SPE) using C 18-impregnated cellulose triacetate (C 18-CTA) composite film as the adsorbent films coupled with high performance liquid chromatography-fluorescence detection (HPLC-FD) has been developed for the determination of BPA in environmental water and soft drink samples. Under the optimum extraction conditions, the method showed excellent linearity in the range of 0.1 to 500 ppb with correlation coefficient, r = 0.992. This method provided ultra-trace detection limit of 0.004 ppb, trace quantification limit of 0.01 ppb and acceptable relative recovery average in the range of 80.9 to 102.6% with relative standard deviation ≤ 9.7%. The proposed microextraction method is simple, rapid and eco-friendly as it consumes less amount of nonhazardous organic solvent.

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Single Drop Microextraction Analytical Technique for Simultaneous Separation and Trace Enrichment of Atrazine and its Major Degradation Products from Environmental Waters Followed by Liquid Chromatographic Determination

Cited by 10 publications

References 43 publications

Electrochemical Detection of Picric Acid Using Glassy Carbon Electrode Modified Reduced Graphene Oxide by Single-Drop Microextraction Method.

Electrochemical Detection of Picric Acid Using Glassy Carbon Electrode Modified Reduced Graphene Oxide by Single-Drop Microextraction Method.

Influence of relevant parameters on the extraction efficiency and the stability of the microdrop in the single drop microextraction

Extraction of Bisphenol a in Environmental Water and Soft Drink by C18-Impregnated Cellulose Triacetate Composite Film

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