scholarly journals Distribution of some heavy and essential metals Cd, Pb, Cu, Fe and Zn in Mango fruit (Mangifera Indica L.) cultivated in Different Regions of Pakistan

10.13171/297 ◽  
2015 ◽  
Vol 4 (6) ◽  
pp. 309-315
Author(s):  
NUSRAT Jalbani ◽  
Mustafa Tuzen ◽  
Funda Aydin ◽  
Shahid Bhutto
Keyword(s):  
Environmental Conditions ◽  
Metal Accumulation ◽  
Certified Reference Materials ◽  
Mangifera Indica ◽  
Toxic Metal ◽  
Standard Addition ◽  
Absorption Spectrometry ◽  
Acid Digestion ◽  
Mango Fruit ◽  
Flame Atomic Absorption

 In the present study, the concentrations of Cd, Pb, Cu, Zn and Fe from 50 mango samples (Mangifera indica L.) were detected by electro-thermal/flame atomic absorption spectrometry (ETAAS/FAAS). In this study three varieties such as Dusahri, Langra and Chaunsa were collected from different regions (Multan, Sadiqabad, Rahimyar Khan and Mirpurkhas) of Pakistan.  The effect of different varieties and environmental conditions on metal accumulation was also investigated. The aim of this study is to compare the level of essential and toxic metal in different regions and correlate the differences observed in metal accumulation to environmental conditions. The accuracy of the conventional acid digestion (CAD) method was checked by analyzing Certified Reference Materials (CRM) i.e. fortified water (TMDA-70), apple leaves (1515) and standard addition technique. The limit of detections (LODs) of the method were found to be 0.113, 2.0, 22.7, 3.85 and 3.05 µg L-1 for Pb, Cd, Cu, Fe, and Zn, respectively.

scholarly journals Determination of Platinum in Wine by Graphite Furnace Atomic Absorption Spectrometry

1997 ◽  
Vol 80 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Carmen Cabrera-Vique ◽  
Pierra-Louis Teissedre ◽  
Marie-Thérèse Cabanis ◽  
Jean-Claude Cabanis
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Standard Addition ◽  
Absorption Spectrometry ◽  
Acid Digestion ◽  
White Wines ◽  
Relative Standard ◽  
Graphite Furnace Atomic Absorption

Abstract A method based on graphite furnace atomic absorption spectrometry (GFAAS) was developed for determining platinum in wine. Wine samples were prepared by microwave acid digestion or dry mineralization. The method of standard addition was used for Pt determination in untreated wine samples and mineralized samples. Analyte modifiers and furnace conditions were optimized. Effects of cations (Mg2+, Ca2+, K+, Na+, and NH|) and anions (PO43, SO42) were tested separately and in combination. Analytical characteristics of the method were optimized for analyte recovery and signal enhancement. Recoveries ranged from 92.5 to 102%, and precision reproducibility relative standard deviation varied from 7.5 to 10%. Red, rosé, and white wines from France were analyzed. Platinum levels found in most wines were very low (<10 μg/L).

Online Preconcentration System Using 6-(2-Thienyl)-2-Pyridine Carboxaldehyde Functionalized Amberlite XAD-4 Resin for the Determination of Trace Elements in Waters by Flame Atomic Absorption Spectrometry

2013 ◽  
Vol 96 (3) ◽  
pp. 642-649 ◽  
Author(s):  
Cennet Karadaş ◽  
Derya Kara
Keyword(s):  
Trace Elements ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Water Samples ◽  
Certified Reference Materials ◽  
Absorption Spectrometry ◽  
Rice Flour ◽  
Flame Atomic Absorption

Abstract An online flow injection method was developed for the determination of trace elements in waters using 6-(2-thienyl)-2-pyridinecarboxaldehyde functionalized Amberlite XAD-4 resin. The metals were eluted with 1.0 M HNO3 directly to a flame atomic absorption spectrometry determination system. The sorption capacities of the resin for metal ions were 74.6, 113.7, 48.3, 131.6, and 88.6 μmol/g for Cd(II), Ni(II), Pb(II), Co(II), and Cu(II), respectively. The resin was found to be very stable and capable of being used for more than 250 retention and elution cycles without major loss of performance. Detection limits (3SD) were determined to be 0.14 μg/L for Cd, 0.39 μg/L for Cu, 0.82 μg/L for Ni, 0.88 μg/L for Co, and 2.54 μg/L for Pb using 10 mL sample loading. The accuracy of the proposed method was checked using different certified reference materials [estuarine water (SLEW-3), riverine water (SRLS-5), 19-element aqueous standard (QCS-19), wheat flour (NBS 1567 a), and rice flour unpolished high level Cd (NIES 10c)]. Results were in agreement with certified values. The proposed method was applied to the determination of Cu, Ni, Co, Cd, and Pb in natural water samples. The recovery values for spiked water samples were between 91.9 and 107.4%.

scholarly journals P.1.04 Correlation between scalp hair lead levels and blood lead levels of lead battery manufacturing workers

2019 ◽  
Vol 76 (Suppl 1) ◽  
pp. A78.2-A78
Author(s):  
Kate Chaivatcharaporn
Keyword(s):  
Cloud Point Extraction ◽  
Scalp Hair ◽  
Blood Lead ◽  
Absorption Spectrometry ◽  
Blood Lead Levels ◽  
Acid Digestion ◽  
Sample Collection ◽  
Lead Battery ◽  
Flame Atomic Absorption ◽  
Lead Levels

A group of 107 lead battery manufacturing workers, whose blood lead levels were above 30 mcg/dl, have been monthly tested for blood lead levels due to the company health policy since 2016. In 2018, 83 workers were enrolled in the scalp hair lead analysis project using cloud point extraction (CPT), ultrasonic acid digestion (UAD) and flame atomic absorption spectrometry (FAAS). This study aimed at finding correlation between hair lead levels and serial blood lead levels. Data were obtained with permission from each workers and were analyzed using paired t-test.All subjects were male workers at the age of 25–58. The working period in this factory ranged from 1–34 years. Latest blood lead levels range from 31.22–58.7 mcg/dl. Hair lead levels ranged from 10.79–712.09 mcg/g in proximal hair segment (n=83) and 41.47–688.64 mcg/g in distal hair segment (n=15). Mean hair lead levels were 163.98 and 259.18 mcg/g in proximal and distal hair segment.The correlation between hair lead levels and 5 consecutive months blood lead levels before the time of hair sample collection were found to be statistically significant (p 0.008, p 0.030, p 0.021, p 0.009, p 0.019). Lead levels of distal hair segment were 9.72 mcg/g higher than proximal hair segment (p 0.002). Furthermore, significant correlation between distal hair segment lead levels and blood lead levels at some months during 3 year-period were found, but not for the prior 5 consecutive months.

scholarly journals Effects of the Domestic Cooking on Elemental Chemical Composition of Beans Species (Phaseolus vulgaris L.)

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Alessandra S. T. Ferreira ◽  
Juliana Naozuka ◽  
Gislayne A. R. Kelmer ◽  
Pedro V. Oliveira
Keyword(s):  
Phaseolus Vulgaris ◽  
Inductively Coupled Plasma ◽  
Certified Reference Materials ◽  
Chemical Constituents ◽  
Essential Element ◽  
Absorption Spectrometry ◽  
Protein Digestibility ◽  
Common Species ◽  
Emission Spectrometry ◽  
Flame Atomic Absorption

Cooking is imperative for beans owing to the presence of compounds that can negatively affect nutritional value. Additionally, the heating of beans can increase protein digestibility and induce desirable sensory properties. However, cooking also causes considerable changes in the composition of numerous chemical constituents, including amino acids, vitamins, and minerals. For this, effects of domestic cooking on the essential element concentrations in various beans species (Phaseolus vulgaris L.) were investigated using jalo, fradinho, rajado, rosinha, bolinha, black, and common species. Elemental determination was made with flame atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry after sample digestion in a closed-vessel microwave oven using a diluted oxidant mixture. Analytical methods were evaluated with an addition and recovery test and analysis of certified reference materials (apple and citrus leaves). Ca, Cu, K, and Mg were present mainly in rajado, Cu in jalo, Fe in black, S and Zn in fradinho, and P in rosinha species. Thermal treatment did not affect Cu, Fe, S, and Zn concentrations, but it increased Ca, K, Mg, P, and Zn concentrations in jalo and black species. Ca concentration decreased in fradinho and rajado species, as did Fe concentration in jalo and rajado species.

scholarly journals Optimized Simultaneous Determination of Several Elements in Human Intestinal Caco-2 TC7 Cells by Inductively Coupled Plasma-Mass Spectrometry after Closed Vessel Microwave Digestion

2003 ◽  
Vol 86 (6) ◽  
pp. 1225-1231 ◽  
Author(s):  
Laurent Noël ◽  
Thierry Guérin ◽  
Jean-Marc Frémy ◽  
Hélène Huet ◽  
Martine Kolf-Clauw
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Certified Reference Materials ◽  
Microwave Digestion ◽  
Absorption Spectrometry ◽  
Inductively Coupled ◽  
Flame Atomic Absorption ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Abstract A rapid procedure, based on closed vessels microwave digestion and inductively coupled plasma-mass spectrometry (ICP-MS), was evaluated to ascertain the effect of chronic exposure to cadmium on intracellular accumulation of minor and essential trace elements in cultured epithelial cells (Caco-2 TC7). For all measurements, the method of external calibration was used and 3 elements (Be, Sc, In) were selected as internal standards. Optimization procedures are discussed and results are presented for the total determination of 9 key analytes (Na, Mg, Ca, Cr, Mn, Cu, Zn, Mo, and Cd) in certified reference materials (CRMs) and 20 samples of Caco-2 TC7 cells long-term exposed to Cd. The performance characteristics of the analytical system were evaluated by calibration and linearity, limits of detection and quantitation, accuracy with spiking, trueness and repeatability with available CRMs. As a complement to the ICP-MS determinations, both available CRMs and cell samples were analyzed either by electro thermal-or flame atomic absorption spectrometry. The results were in good agreement with the ICP-MS results.

scholarly journals Combination of cloud point extraction and flame atomic absorption spectrometry for preconcentration and determination of trace iron in environmental and biological samples

2008 ◽  
Vol 6 (3) ◽  
pp. 488-496 ◽  
Author(s):  
Mehrorang Ghaedi ◽  
Ardeshir Shokrollahi ◽  
Raziyeh Mehrnoosh ◽  
Omid Hossaini ◽  
Mustafa Soylak
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Cloud Point ◽  
Flame Atomic Absorption Spectrometry ◽  
Cloud Point Extraction ◽  
Standard Addition ◽  
Absorption Spectrometry ◽  
Sample Volume ◽  
Flame Atomic Absorption ◽  
The Matrix

AbstractIn the presented work, the conditions for cloud point extraction of iron from aqueous solutions using 7-iodo-8-hydroxyquinolin-5-sulphonic acid (Ferron) was investigated and optimized. The procedure is based on the separation of its ferron complex into the micellar media by adding the surfactant Triton X-114. After phase separation, the surfactant-rich phase was dissolved with 1.0 M HNO3 in methanol. Iron was determined by flame atomic absorption spectrometry. Optimization of the pH, ligand and surfactant quantities, incubation time, temperature, viscosity, sample volume, and interfering ions were investigated. The effects of the matrix ions were also examined. The detection limits for three times the standard deviations of the blank for iron was 0.4 ng m L-1, enrichment factor of 19.6 and preconcentration factor of 30 could be achieved. The validity of cloud point extraction was checked by employing real samples including soil, blood, spinach, milk, meat, liver and orange juice samples using the standard addition method, which gave satisfactory results.In the presented work, the conditions for cloud point extraction of iron from aqueous solutions using 7-iodo-8-hydroxyquinolin-5-sulphonic acid (Ferron) was investigated and optimized. The procedure is based on the separation of its ferron complex into the micellar media by adding the surfactant Triton X-114. After phase separation, the surfactant-rich phase was dissolved with 1.0 M HNO3 in methanol. Iron was determined by flame atomic absorption spectrometry. Optimization of the pH, ligand and surfactant quantities, incubation time, temperature, viscosity, sample volume, and interfering ions were investigated. The effects of the matrix ions were also examined. The detection limits for three times the standard deviations of the blank for iron was 0.4 ng m L−1, enrichment factor of 19.6 and preconcentration factor of 30 could be achieved. The validity of cloud point extraction was checked by employing real samples including soil, blood, spinach, milk, meat, liver and orange juice samples using the standard addition method, which gave satisfactory results.

Determination of Traces of Iron and Lead in Food and Water Samples After Preconcentration on Multiwalled Carbon Nanotubes

2012 ◽  
Vol 95 (4) ◽  
pp. 1183-1188 ◽  
Author(s):  
Mustafa Soylak ◽  
Yunus Emre Unsal
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Certified Reference Materials ◽  
Absorption Spectrometry ◽  
Multiwalled Carbon ◽  
Spectrometry Analysis ◽  
Flame Atomic Absorption ◽  
Sensitive Determination ◽  
Humber River

Abstract A new method using multiwalled carbon nanotubes as an SPE adsorbent was developed for the sensitive determination of trace iron and lead prior to flame atomic absorption spectrometry analysis. Iron and lead as 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline chelates were adsorbed quantitatively on multiwalled carbon nanotubes at a pH of 6.0 and easily eluted with 10 mL 1 M HNO3. The influences of matrix ions were also examined. The LOD values for iron and lead were calculated as 1.3 and 2.9 μg/L, respectively. Validation of the presented procedure was performed by the analysis of TMDA 54.4 fortified lake water and HR-1 Humber River sediment certified reference materials. The method was successfully applied to the determination of trace iron and lead in real environmental samples, and excellent results were achieved.

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