scholarly journals Trace Element Concentrations Present in Five Species of Freshwater Fish of Bangladesh

1970 ◽  
Vol 46 (1) ◽  
pp. 27-32 ◽  
Author(s):  
M Nurul Amin ◽  
A Begum ◽  
MG Kibria Mondal
Keyword(s):  
Trace Element ◽  
Atomic Absorption ◽  
Freshwater Fish ◽  
Certified Reference Materials ◽  
Atomic Absorption Spectrophotometry ◽  
International Standards ◽  
Human Consumption ◽  
Absorption Spectrophotometry ◽  
Relative Standard ◽  
Gumti River

In the present study, the edible portions of whole fish excluding viscera and bone of five different freshwater fish species samples are analysed for lead, manganese, nickel, zinc, copper and iron by atomic absorption spectrophotometry (AAS). The relative standard deviations (RSD) were found below 5%. The accuracy of the methods was confirmed by certified reference materials. The concentrations of trace elements in the edible portions of other fish comply with the international standards for human consumption. Key words: Trace element; Gumti river; Freshwater fish; Atomic absorption spectrophotometry (AAS); Metal contamination DOI: http://dx.doi.org/10.3329/bjsir.v46i1.8101 Bangladesh J. Sci. Ind. Res. 46(1), 27-32, 2011

Reliable determination of copper complex ions in synthetic wastewater using flame atomic absorption spectrophotometry

2019 ◽  
Vol 79 (5) ◽  
pp. 833-841 ◽  
Author(s):  
Kanokporn Supong ◽  
Parnuwat Usapein
Keyword(s):  
Atomic Absorption ◽  
Copper Complexes ◽  
Atomic Absorption Spectrophotometry ◽  
Synthetic Wastewater ◽  
Flame Atomic Absorption Spectrophotometry ◽  
Working Standard ◽  
Absorption Spectrophotometry ◽  
Flame Atomic Absorption ◽  
Relative Standard ◽  
Delay Times

Abstract Forms of copper that are highly soluble in aquatic environments are used as chemical reagents in a variety of industries, especially copper complexes. Wastewater containing copper complexes can be difficult to treat and analyse. Normally, flame atomic absorption spectrophotometry (FAAS) is a favourable technique for analysing metal ions in wastewater, but is less reliable for copper analysis owing to the influence of copper oxides. To solve this problem, it is necessary to adjust the atomization and delay times. The objective of this study was to use FAAS to accurately determine the quantity of complexed copper in synthetic wastewater, using increased atomization and delay times. The method showed excellent linearity in the copper standard concentration range of 1–5 mg L−1. The sensitivity of the analysis was 0.023 mg L−1. The percentage of recovery and the relative standard deviation were 85.02% and 0.75%, respectively. The experimental results demonstrated that the estimation of uncertainty from preparation of working standard, repeatability uncertainty, instrument deviation, calibration curve and recovery uncertainty were 8.2 × 10−4, 4.49 × 10−4, 7.21 × 10−4, 21.25 × 10−4, and 98.19 × 10−4, respectively. Overall, the results showed the suitability of the FAAS method for determining copper in synthetic wastewater.

Atomic Absorption Spectrophotometric Method for Determination of Polydimethylsiloxane Residues in Pineapple Juice: Collaborative Study

1990 ◽  
Vol 73 (5) ◽  
pp. 721-723
Author(s):  
Robert D Parker
Keyword(s):  
Nitrous Oxide ◽  
Atomic Absorption ◽  
Spectrophotometric Method ◽  
Collaborative Study ◽  
Atomic Absorption Spectrophotometry ◽  
Pineapple Juice ◽  
Absorption Spectrophotometry ◽  
Relative Standard ◽  
Standard Deviations

Abstract An atomic absorption spectrophotometric method for determination of polydimethylsiloxane (PDMS) residues In pineapple juice was collaboratively studied by 9 laboratories. PDMS residues are extracted from pineapple Juice with 4- methyl-2-pentanone and the extracted silicone Is measured by atomic absorption spectrophotometry using a nitrous oxide/ acetylene flame. Collaborators analyzed 5 samples Including 1 blind duplicate. Reproducibility relative standard deviations (RSDR) were 13.1% at 31 ppm, 6.9% at 18 ppm, 14.8% at 7.9 ppm, and 16.1 % at 4.9 ppm PDMS. The method has been approved Interim official first action by AOAC.

scholarly journals Heavy Metal Concentration in Eight Fish Species from Epe Lagoon (Nigeria)

2019 ◽  
Vol 21 (1) ◽  
pp. 69-82
Author(s):  
Iyabode Olusola Taiwo ◽  
Olaniyi Alaba Olopade ◽  
Nathanael Akinsafe Bamidele
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Metal Concentration ◽  
Fish Species ◽  
Heavy Metal Concentration ◽  
Atomic Absorption Spectrophotometry ◽  
Human Consumption ◽  
Heavy Metal Concentrations ◽  
Absorption Spectrophotometry

Abstract This research was undertaken to find out the levels of five heavy metals (Cu, Fe, Mn, Pb, and Zn) in the muscles of eight fish species from Epe Lagoon. The levels of heavy metals were determined by atomic absorption spectrophotometry after digestion of the samples using Kjldahl heating digester. The heavy metal concentrations among the fish species were statistically dissimilar (P < 0.5). The heavy metals of Pb, Fe, and Mn were above the FAO/WHO agreeable limits for human consumption.

scholarly journals Hepatic iron quantification by atomic absorption spectrophotometry: Full validation of an analytical method using a fast sample preparation

2007 ◽  
Vol 21 (3) ◽  
pp. 161-167 ◽  
Author(s):  
A. C. Wortmann ◽  
P. E. Froehlich ◽  
R. B. Pinto ◽  
R. B. Magalhães ◽  
M. R. Álvares-da-Silva ◽  
...  
Keyword(s):  
Sample Preparation ◽  
Atomic Absorption ◽  
Limit Of Detection ◽  
Bovine Liver ◽  
Atomic Absorption Spectrophotometry ◽  
Hepatic Iron ◽  
Limit Of Quantification ◽  
Absorption Spectrophotometry ◽  
Iron Quantification ◽  
Relative Standard

Atomic absorption spectrophotometry is considered the method of choice for hepatic iron quantification. The objective of the present study was to perform full validation assays of hepatic iron quantification by atomic absorption spectrophotometry, using a fast sample preparation procedure, following the guidelines from the International Conference on Harmonization. The following parameters were evaluated: specificity, linearity/range, precision, accuracy, limit of detection and limit of quantification. A good linear correlation was found (0.9948) in the concentration range evaluated (20- 120 ppb). The relative standard deviations were below 15% for accuracy, and below 10% for both day-to-day reproducibility and within-days precision, and the repeatability of injections was 0.65%. Limit of detection was 2 ppb, and limit of quantification was 6 ppb. Fresh bovine liver tissue was used to evaluate the procedure of collecting samples by liver biopsies. These findings indicate that hepatic iron quantification by atomic absorption spectrophotometry can be reliably performed at the established conditions, and suggest the method is suitable for further use in clinical practice. Hepatic iron quantification by AAS is validated by the experiments performed in the present study.

Copena Galena: Source Identification and Analysis

1980 ◽  
Vol 45 (1) ◽  
pp. 21-42 ◽  
Author(s):  
John A. Walthall ◽  
Stephen H. Stow ◽  
Marvin J. Karson
Keyword(s):  
North America ◽  
Trace Element ◽  
Atomic Absorption ◽  
Source Identification ◽  
Atomic Absorption Spectrophotometry ◽  
Eastern North America ◽  
Mississippi Valley ◽  
Middle Woodland ◽  
Absorption Spectrophotometry ◽  
Burial Mounds

Galena artifacts from Middle Woodland Copena burial mounds have been analyzed by means of atomic absorption spectrophotometry in order to determine their trace element compositions. These results are compared to trace element characteristics of galena sources in eastern North America. Analysis to date suggests the Upper Mississippi Valley galena district as the source for these artifacts. Implications concerning Middle Woodland exchange systems are also offered.

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