Cloud point extraction for determination of lead in blood samples of children, using different ligands prior to analysis by flame atomic absorption spectrometry: A multivariate study

Shah, Faheem; Kazi, Tasneem Gul; Afridi, Hassan Imran; Naeemullah,; Arain, Mohammad Balal; Baig, Jameel Ahmed

doi:10.1016/j.jhazmat.2011.06.017

Cited by 66 publications

(26 citation statements)

References 42 publications

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“…Also, determination of lead in heart blood samples was done by atomic absorption spectrophotometer (WFX-210, Beijing, China). The detail of the sample preparation and determination was described in previous studies [24].…”

Section: Zinc and Lead Assessments In Bloodmentioning

confidence: 99%

Zinc Chloride and Lead Acetate-Induced Passive Avoidance Memory Retention Deficits Reversed by Nicotine and Bucladesine in Mice

Tabrizian

Yazdani

Baheri

et al. 2015

Biol Trace Elem Res

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It is very important to investigate the neurotoxic effects of metals on learning and memory processes. In this study, we tried to investigate the effects and time course properties of oral administration of zinc chloride (25, 50, and 75 mg/kg, for 2 weeks), lead acetate (250, 750, 1,500, and 2,500 ppm for 4, 6 and 8 weeks), and their possible mechanisms on a model of memory function. For this matter, we examined the intra-peritoneal injections of nicotine (0.25, 0.5, 1, and 1.5 mg/kg) and bucladesine (50, 100, 300, and 600 nM/mouse) for 4 days alone and in combination with mentioned metals in the step-through passive avoidance task. Control animals received saline, drinking water, saline, and DMSO (dimethyl sulfoxide)/deionized water (1:9), respectively. At the end of each part of studies, animals were trained for 1 day in step-through task. The avoidance memory retention alterations were evaluated 24 and 48 h later in singular and combinational studies. Zinc chloride (75 mg/kg) oral gavage for 2 weeks decreased latency times compared to control animals. Also, lead acetate (750 ppm oral administrations for 8 weeks) caused significant lead blood levels and induced avoidance memory retention impairments. Four-days intra-peritoneal injection of nicotine (1 mg/kg) increased latency time compared to control animals. Finally, findings of this research showed that treatment with intra-peritoneal injections of nicotine (1 mg/kg) and/or bucladesine (600 nM/mouse) reversed zinc chloride- and lead acetate-induced avoidance memory retention impairments. Taken together, these results showed the probable role of cholinergic system and protein kinase A pathways in zinc chloride- and lead acetate-induced avoidance memory alterations.

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Section: Zinc and Lead Assessments In Bloodmentioning

confidence: 99%

Zinc Chloride and Lead Acetate-Induced Passive Avoidance Memory Retention Deficits Reversed by Nicotine and Bucladesine in Mice

Tabrizian

Yazdani

Baheri

et al. 2015

Biol Trace Elem Res

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“…In recent years, miniaturization of sample preparation has become an important factor for new sample preparation techniques. Some of these techniques include single drop microextraction (SDME) [9,10], dispersive liquid-liquid microextraction (DLLME) [11][12][13], solid phase extraction (SPE) [14][15][16], solid phase microextraction (SPME) [17,18], and cloud point extraction (CPE) [19][20][21][22]. Meanwhile, the concern for environmental pollution and human health has led to the development of green analytical methods.…”

Section: Introductionmentioning

confidence: 99%

Determination of Zinc, Copper, and Mercury in Water Samples by Using Novel Micro Cloud Point Extraction and UV-Vis Spectrophotometry

Ghasemi¹,

Kaykhaii²

2016

Eurasian J Anal Chem

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A novel micro cloud point extraction (MCPE) was developed as a fast, simple, and economical preconcentration method for spectrophotometric determination of Zn, Cu, and Hg in water samples. In contrary to traditional cloud point extraction, this method does not need heating. To achieve the cloud point in room temperature, the MCPE procedure was carried out in brine. Triton X-114 was employed as a non-ionic surfactant and the analytes were chelated by 4-(2-pyridylazo) resorcinol prior to extraction. The important factors influencing the extraction efficiency were investigated and optimized. Under the optimized condition, calibration curve was found to be linear in the concentration range of 0.15-0.60, 0.02-0.10, and 0.30-0.80 mg.L -1 for Zn, Cu, and Hg respectively with a limit of detection of 51.7, 9.8, and 13.1 μg.L -1 .

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“…Flame atomic absorption spectrometry is by far the most widely employed technique for analyte determination [19,20], but it is not sufficiently sensitive for the direct determination of trace level of Cu in biological/environmental samples, mostly due to the complexity of the matrix and the low concentration, so it needs prior separation and preconcentration [21,22]. The analytical potential of an enrich method, cloud point extraction (CPE) has been discussed by several authors, comprising this method as green chemistry [23,24]. The CPE is based on the phase behavior of non-ionic surfactants in aqueous solutions, which exhibit phase separation after an increase in temperature or the addition of a chelating agent [25].…”

Section: Introductionmentioning

confidence: 99%

Estimate the Levels of Copper in Serum Samples of Hepatitis C Patients at Different Stages after Interferon-α Therapy

Ia¹,

GK²

2016

Pharm Anal Acta

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In this study, we evaluated the copper (Cu) levels in serum samples of patients infected by hepatitis C virus (HCV) at different stages and examined the changes in its content before and after interferon α (IFN-α) therapy with related to healthy subjects. The 199 HCV patients of both genders at different stages including (acute, fibrosis and cirrhosis) were enrolled in this study, who have completed IFN-α treatment and were followed for at least 1 year after the end the therapy. We have also evaluated the changes in biochemical parameters before and after treatment. Blood samples were collected from patients before and after treatment of IFN-α therapy. For comparative purposes healthy subjects of same age group (30-50) were also selected. The trace level of Cu in serum samples was determined by flame atomic absorption spectrometry after preconcentration by dual-cloud point extraction method. It was observed that after INF-α treatment the level of Cu in serum samples of HCV patients were reduced in decreasing order such as acute> fibrosis> cirrhosis.

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Cloud point extraction for determination of lead in blood samples of children, using different ligands prior to analysis by flame atomic absorption spectrometry: A multivariate study

Cited by 66 publications

References 42 publications

Zinc Chloride and Lead Acetate-Induced Passive Avoidance Memory Retention Deficits Reversed by Nicotine and Bucladesine in Mice

Zinc Chloride and Lead Acetate-Induced Passive Avoidance Memory Retention Deficits Reversed by Nicotine and Bucladesine in Mice

Determination of Zinc, Copper, and Mercury in Water Samples by Using Novel Micro Cloud Point Extraction and UV-Vis Spectrophotometry

Estimate the Levels of Copper in Serum Samples of Hepatitis C Patients at Different Stages after Interferon-α Therapy

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