Determination of cadmium(II), cobalt(II), nickel(II), lead(II), zinc(II), and copper(II) in water samples using dual-cloud point extraction and inductively coupled plasma emission spectrometry

Zhao, Lingling; Zhong, Shuxian; Fang, Keming; Qian, Zhaosheng; Chen, Jianrong

doi:10.1016/j.jhazmat.2012.08.066

Cited by 243 publications

(66 citation statements)

References 42 publications

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“…The accuracy of the proposed procedure was assessed by the analysis of certified reference materials (CRM), and the observed values for Cd were found to be in good agreement with the certified values ( Table 3). The proposed methodology was compared to other CPE methods reported recently in the literature [16,[30][31][32][33][34][35][36][37]. The distinct features are summarized in Table 4.…”

Section: Analytical Featuresmentioning

confidence: 99%

Application of Cloud Point Extraction for Cadmium in Biological Samples of Occupationally Exposed Workers: Relation Between Cadmium Exposure and Renal Lesion

Mortada

Hassanien

Donia

et al. 2015

Biol Trace Elem Res

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Cadmium (Cd) level in blood and urine of soldering iron workers (n=49) and 41 matched healthy controls has been assessed. Cloud point extraction was employed for preconcentration of Cd. The Cd ions formed hydrophobic complex with 9,10-phenanthraquinone monoethyl thiosemicarbazone that was extracted by surfactant-rich phases in the nonionic surfactant Triton X-114. The surfactant-rich phase was diluted with 1 M HNO3 in methanol prior to its analysis by graphite furnace atomic absorption spectrometry. The parameters affecting the extraction efficiency of the proposed method, such as solution pH, amount of complexing agent, surfactant concentration, temperature, and incubation time, were optimized. Under the optimum experimental conditions, the detection limit and the enrichment factor were 0.04 μg L(-1) and 61, respectively. Relative standard deviation of 10 μg L(-1) Cd was less than 3.0%. The accuracy of the method was examined by analysis of certified reference materials. It was observed that soldering iron workers are liable to Cd overload as indicated by higher levels of Cd in blood and urine when compared with the controls. This exposure may lead to kidney damage indicated by elevation of urinary excretion of both N-acetyl-β-D-glucosaminidase and β2-microglobulin.

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Section: Analytical Featuresmentioning

confidence: 99%

Application of Cloud Point Extraction for Cadmium in Biological Samples of Occupationally Exposed Workers: Relation Between Cadmium Exposure and Renal Lesion

Mortada

Hassanien

Donia

et al. 2015

Biol Trace Elem Res

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“…Consequently, traceable and reliable measurement of Pb is essential for the safety and risk assessment for the wide use of traditional and medicinal herbs. Currently, there are some variety methods related to modern instrumentation that have been widely used for heavy metal determination; these include ICP (MS and AES) (Zhao et al 2012;Sorbo et al 2014;Deng et al 2015;Tai et al 2016) and AAS (Demirtaş et al 2015;Batista et al 2016;Zhong et al 2016). However, trace determination of Pb in herb samples is relatively inconvenient because of the matrix effect and low concentration of Pb.…”

Section: Introductionmentioning

confidence: 99%

Microextraction based on solidified floating organic drop coupled with ETAAS for the determination of lead in herbs

Thongsaw¹,

Sananmuang²,

Ross³

et al. 2017

Nova Biotechnologica Et Chimica

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A rapid, inexpensive and practical solidified of floating organic droplet microextraction (SFODME) prior to electrothermal atomic absorption spectrometry (ETAAS) was proposed for lead (Pb) determination in herb samples. For SFODME procedure, 1-(2-pysidylazo)-2-naphthol was used as a complexing agent. Analytical parameters influencing the extraction efficiency, i.e. types and volume of extracting solvent, concentration of 1-(2-pyridylazo)-2-naphthol, pH, extraction temperature and time were optimized. Under the optimized conditions, LOD and LOQ were 0.064 and 0.214 µg L -1 , respectively, and an enrichment factor was achieved at 18.71 with the relative standard deviation ranging from 1.3 to 2.5% (n=6). The proposed method was effectively applied to the determination of lead in Spinach leaves (SRM-1570a) and Thai herb samples with acceptable results.

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“…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.

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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...

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Determination of cadmium(II), cobalt(II), nickel(II), lead(II), zinc(II), and copper(II) in water samples using dual-cloud point extraction and inductively coupled plasma emission spectrometry

Cited by 243 publications

References 42 publications

Application of Cloud Point Extraction for Cadmium in Biological Samples of Occupationally Exposed Workers: Relation Between Cadmium Exposure and Renal Lesion

Application of Cloud Point Extraction for Cadmium in Biological Samples of Occupationally Exposed Workers: Relation Between Cadmium Exposure and Renal Lesion

Microextraction based on solidified floating organic drop coupled with ETAAS for the determination of lead in herbs

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

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