Spectrophotometric determination of zinc in foods using N-ethyl-3-carbazolecarboxaldehyde-3-thiosemicarbazone: Evaluation of a new analytical reagent

Reddy, K. Pratap; Kumar, J. Rajesh; Ramachandraiah, C.; Thriveni, Thenepalli; Reddy, A. Varada

doi:10.1016/j.foodchem.2006.02.018

Cited by 58 publications

(30 citation statements)

References 23 publications

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“…It was more than 100 mg kg -1 only for basil (128.7 mg kg -1 ) and sesame (109.3 mg kg -1 ). Compared to other studies, the average zinc contents in this study are close to the range reported in 9 out of 12 articles on spices (Table 7) and to the range (21-92.5 mg kg -1 ) recorded by Reddy et al for leafy vegetables [38].…”

Section: Zincsupporting

confidence: 86%

Using Stripping Voltammetry to Determine Heavy Metals in Cooking Spices Used in Iraq

Matloob¹

2016

Pol. J. Environ. Stud.

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Section: Zincsupporting

confidence: 86%

Using Stripping Voltammetry to Determine Heavy Metals in Cooking Spices Used in Iraq

Matloob¹

2016

Pol. J. Environ. Stud.

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“…The mean percent extraction copper content of the black tea samples was 22.76% (lowest in Iranian teas, highest imported teas), that showed in Fig 1. Zinc is known to be involved in most metabolic pathways in humans. Zinc deficiency can lead to loss of appetite, growth retardation, skin changes and immunological abnormalities (Reddy et al, 2007). The mean percent extraction achieved for zinc in cultivated teas and imported teas, 49.75% and 59.10%, respectively.…”

Section: Resultsmentioning

confidence: 99%

Mineral Analysis the Infusion of Black Tea Samples by Atomic Absorption Spectrometry

Lahiji

Tadayon

Tamiji

et al. 2013

E3S Web of Conferences

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Abstract. Tea infusion is one of the most popular drinks around the world. Since tea infusion is known to contain several essential nutrients, it is considered a healthy beverage. In this study eight different Iranian brands of tea infusion and eleven brands imported tea infusion samples from another country for Cu, Zn, Mn and Al were determined by flame atomic absorption spectrometry after wet digestion. The results of analysis showed that the extraction rates of minerals from dry black tea to infusion tea were for Mn (19.35%), Cu (22.75%), Zn (54.43%) and Al (61.48%). The results obtained from this analysis have shown good accuracy.

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“…These chelating agents have low water solubility and a relatively high solubility in organic solvents, such as acetone and methanol. These reasons allow their use in extractions with suitable organic solvents and make them widely used in the separation, extraction, and determination of many metal ions [21][22][23][24]. The present study descri bes the application of CPE for preconcentrative separation of Cd in biological samples (blood and urine) of soldering iron workers to evaluate the degree of their exposure to Cd.…”

Section: Introductionmentioning

confidence: 97%

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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Spectrophotometric determination of zinc in foods using N-ethyl-3-carbazolecarboxaldehyde-3-thiosemicarbazone: Evaluation of a new analytical reagent

Cited by 58 publications

References 23 publications

Using Stripping Voltammetry to Determine Heavy Metals in Cooking Spices Used in Iraq

Using Stripping Voltammetry to Determine Heavy Metals in Cooking Spices Used in Iraq

Mineral Analysis the Infusion of Black Tea Samples by Atomic Absorption Spectrometry

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

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