Ultrasound-assisted ionic liquid based dispersive liquid–liquid microextraction and flame atomic absorption spectrometry of cobalt, copper, and zinc in environmental water samples

Rajabi, Maryam; Asemipour, Somayeh; Barfi, Behruz; Jamali, Mohammad Reza; Behzad, Mahdi

doi:10.1016/j.molliq.2014.01.026

Cited by 84 publications

(18 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, 400 µ L of ethanol is not sufficient to disperse the higher amount of IL into the fine droplets, which results in a decrease in the extraction efficiency and absorbance; similar results were observed before. 35,36 Thus, in order to obtain high sensitivity and enrichment factor, 60 µ L of IL was chosen for subsequent experiments. …”

Section: Effect Of Volume Of Ilmentioning

confidence: 99%

Spectrophotometric determination of iron species using ionic liquid ultrasound assisted dispersive liquid--liquid microextraction

Bazmandegan¹,

Shabani²,

Saeidi³

et al. 2015

Turk J Chem

View full text Add to dashboard Cite

show abstract

Section: Effect Of Volume Of Ilmentioning

confidence: 99%

Spectrophotometric determination of iron species using ionic liquid ultrasound assisted dispersive liquid--liquid microextraction

Bazmandegan¹,

Shabani²,

Saeidi³

et al. 2015

Turk J Chem

View full text Add to dashboard Cite

show abstract

“…Heavy metal ions and dyes are water pollutants that have caused worldwide environmental and biological problems, especially at a level more than the threshold limit. These contaminants are non‐biodegradable, very toxic and carcinogenic, and have harmful effects on human health and the environment . Heavy metal ions like lead (Pb 2+ ) and chromium (Cr 3+ ) cations are extremely toxic for humans and the environment even at very low levels, while cations such as copper (Cu 2+ ), nickel (Ni 2+ ) and zinc (Zn 2+ ) play important roles in several biochemical processes, and their compounds have bactericidal activities .…”

Section: Introductionmentioning

confidence: 99%

Dissolvable layered double hydroxide nanoadsorbent‐based dispersive solid‐phase extraction for highly efficient and eco‐friendly simultaneous microextraction of two toxic metal cations and two anionic azo dyes in real samples

Arghavani-Beydokhti

Rajabi

Asghari

2018

Applied Organom Chemis

Self Cite

View full text Add to dashboard Cite

For the first time, a new mode of dispersive solid-phase extraction is presented as a simple, rapid, adsorbent-free and environmentally friendly method for the simultaneous microextraction and preconcentration of trace amounts of two metal ions (Pb 2+ and Cr 3+ ) and two anionic azo dyes (reactive yellow 15 (RY15) and reactive black 5 (RB5)). This method is based upon the in situ formation of a layered double hydroxide (LDH) nanosorbent through an electrostatic induction process. In this method, extraction of the analytes is performed simultaneously with the formation of the nanosorbent only by adding hydroxide ions. After extraction and separation of the sorbent from the sample solution through a syringe nanofilter, the analytes are eluted by dissolving the LDHs in an acidic solution. Finally, the extracted metal cations and anionic azo dyes are directly determined by micro-sampling flame atomic absorption spectrometry and micro-volume UV-visible spectrophotometry, respectively. Under the optimal experimental conditions including 20 μmol of hydroxide ions, 248.4:20.8 μg l −1 of M 2+ :M 3+ ions, 12 cycles of air agitation and 200 μl of CF 3 COOH (2 M), good linearities were obtained for Pb 2+ , Cr 3+ , RY15 and RB5 in the concentration ranges 50-600, 5.0-280, 30-2500 and 30-2000 ng ml −1 , respectively, with correlation of determinations higher than 0.995. The preconcentration factor for the target analytes was 50 in a 10 ml sample solution. The limits of detection were found to be 15, 1.5, 10 and 10 μg l −1 for Pb 2+ , Cr 3+ , RY15 and RB5, respectively. The intra-day and inter-day precisions were in the ranges 4.3-6.1 and 5.5-6.8%, respectively. Additionally, the presented method is applicable for the analysis of the target analytes in different water samples with reasonable recoveries (>87%). KEYWORDSin situ formation, layered double hydroxide, micro-sampling flame atomic absorption spectrometry, micro-volume UV-visible spectrophotometry, real samples

show abstract

“…3,4 Therefore, due to the pressing need for sensitive zinc determination in biological and environmental samples, particularly water samples, various analytical techniques have been proposed for the determination of zinc. Spectrophotometry, 5 atomic absorption spectroscopy (AAS), 6 inductively coupled plasma atomic emission spectrometry (ICP-AES), 7 solidphase extraction, 8 liquid-liquid extraction, 9 dispersive liquidliquid extraction, 10 ion-imprinted polymer nanoparticle, 11 nuclear magnetic resonance (NMR) molecular sensor, 12 and stripping potentiometry 13,14 are among the most used techniques. The sample preconcentration, time consuming and complicated operation, and high costs for equipment are some of the drawbacks to these methods.…”

Section: Introductionmentioning

confidence: 99%

A Novel Sensitive Bulk Optode Based on 5-Br Salophen as an Ionophore for Determination of Zinc Ion in Real Samples

Alian¹,

Semnani²,

Firooz³

et al. 2017

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

An optical sensing film was fabricated for sensitive determination of zinc ion in aqueous solutions. The optical sensor was prepared by synthesized ionophore, 5-Br salophen, dioctyl sebacate (DOS) as a plasticizer, sodium tetraphenyl borate (NaTPB) as a lipophilic anionic additive in a poly(vinyl chloride) membrane. The optode response is based on the cation-exchange membrane and indicated a significant absorbance signal change on the exposure to BrittonRobinson buffer solution of pH 5.7 containing Zn 2+ ion. The proposed sensor showed a linear range of 4.9 × 10 -5 -4.5 × 10 -12 mol L -1 with a limit of detection of 3.9 × 10 -12 mol L -1. Furthermore, satisfactory analytical sensing characteristics including selectivity, stability, and reproducibility for the determination of zinc ion were obtained. The response time of the sensing film was less than 5 min, depending on the concentration of Zn 2+ ions. The proposed sensor was successfully applied for determination of zinc in tap water, river water, and sea water. Keywords: optical sensor, zinc ion, UV-Vis spectrophotometry, 5-Br salophen IntroductionZinc is essential in human metabolism. It plays an important role in the activity of more than 200 enzymes responsible for genetic materials, food digestion, and metabolism of carbohydrate, protein and fat. The zinc deficiency leads to retarded growth and lower feed efficiency, inhibits the general well-being, and causes ulcers as well as scaling of the skin.1,2 Although zinc is necessary for health, excess zinc can be harmful. The excess amount of zinc ion in body significantly decreases copper and iron absorption. Moreover, the free zinc ion in solution is toxic to plants and aquatic organisms.3,4 Therefore, due to the pressing need for sensitive zinc determination in biological and environmental samples, particularly water samples, various analytical techniques have been proposed for the determination of zinc. Spectrophotometry, 5 atomic absorption spectroscopy (AAS), 6 inductively coupled plasma atomic emission spectrometry (ICP-AES), 7 solidphase extraction, 8 liquid-liquid extraction, 9 dispersive liquidliquid extraction, 10 ion-imprinted polymer nanoparticle, 11 nuclear magnetic resonance (NMR) molecular sensor, 12 and stripping potentiometry 13,14 are among the most used techniques. The sample preconcentration, time consuming and complicated operation, and high costs for equipment are some of the drawbacks to these methods. Therefore, these methods are not appropriate for the simple, economical, and sensitive determination of zinc in analysis strategy. In recent years, there has been a growing need for constructing chemical or electrochemical sensors to monitor the environmental samples fast and economically. In this regard, due to their advantages in comparison to ion-selective electrode, optical sensors have received considerable attention. Ease of production, good selectivity and sensitivity, low cost method, as well as high dynamic concentration range, are the main advantages. [15][16][17][18] Bulk optode...

show abstract

Ultrasound-assisted ionic liquid based dispersive liquid–liquid microextraction and flame atomic absorption spectrometry of cobalt, copper, and zinc in environmental water samples

Cited by 84 publications

References 44 publications

Spectrophotometric determination of iron species using ionic liquid ultrasound assisted dispersive liquid--liquid microextraction

Spectrophotometric determination of iron species using ionic liquid ultrasound assisted dispersive liquid--liquid microextraction

Dissolvable layered double hydroxide nanoadsorbent‐based dispersive solid‐phase extraction for highly efficient and eco‐friendly simultaneous microextraction of two toxic metal cations and two anionic azo dyes in real samples

A Novel Sensitive Bulk Optode Based on 5-Br Salophen as an Ionophore for Determination of Zinc Ion in Real Samples

Contact Info

Product

Resources

About