scholarly journals Estimate Lead and Cadmium contents of some archeological samples collected from ancient cities location (Cyrene and Abolonia) at Al - Gabal Al -Akhder Region, Libya

2021 ◽  
pp. 902-907
Author(s):  
Hamad. M. Adress. Hasan
Keyword(s):  
Atomic Absorption ◽  
Lead And Cadmium ◽  
North Side ◽  
Air Pollutions

This study was carried out on archeological samples which collected from one of the most important ancient cities which located at eastern north side of Libya, these cities called (Cyrene and Abolonia Cyrene). Different samples were collected from the outside surface of the studied samples. The contents of lead (pb) and cadmium (Cd) were determined b using atomic absorption instrument. The results showed small variations for the studied metals between the studied samples. The concluded that the source of the detected metals are mainly due to the effects of air pollutions by the dust of machines and cars.

Trace Elements and Metals in Farmed Sea Bass and Gilthead Bream from Tenerife Island, Spain

2011 ◽  
Vol 74 (11) ◽  
pp. 1938-1943 ◽  
Author(s):  
C. RUBIO ◽  
A. JALILLI ◽  
A. J. GUTIÉRREZ ◽  
D. GONZÁLEZ-WELLER ◽  
F. HERNÁNDEZ ◽  
...  
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Sparus Aurata ◽  
Graphite Furnace ◽  
Sea Bass ◽  
Absorption Spectrometry ◽  
Lead And Cadmium ◽  
Flame Atomic Absorption ◽  
Tenerife Island ◽  
Wet Weight

The aim of this study was to determine the levels of metals (Ca, K, Na, Mg) and trace metals (Ni, Fe, Cu, Mn, Zn, Pb, Cd) in two fish species (gilthead bream [Sparus aurata] and sea bass [Dicentrarchus labrax]) collected from fish farms located along the coast of Tenerife Island. Ca, K, Na, Mg, Fe, Cu, Zn, and Mn were measured by flame atomic absorption spectrometry, whereas Pb, Cd, and Ni were determined using graphite furnace atomic absorption spectrometry. Mean Fe, Cu, Mn, and Zn contents were 3.09, 0.59, 0.18, and 8.11 mg/kg (wet weight) in S. aurata and 3.20, 0.76, 0.24, and 10.11 mg/kg (wet weight) in D. labrax, respectively. In D. labrax, Ca, K, Na, and Mg levels were 1,955, 2,787, 699.7, and 279.2 mg/kg (wet weight), respectively; in S. aurata, they were 934.7, 3,515, 532.8, and 262.8 mg/kg (wet weight), respectively. The Pb level in S. aurata was 7.28 ±3.64 μg/kg (wet weight) and, in D. labrax, 4.42 ±1.56 μg/kg (wet weight). Mean Cd concentrations were 3.33 ±3.93 and 1.36 ± 1.53 μg/kg (wet weight) for D. labrax and S. aurata, respectively. All Pb and Cd levels measured were well below the accepted European Commission limits, 300 and 50 μg/kg for lead and cadmium, respectively.

scholarly journals Graphite Furnace Atomic Absorption Spectrometric Determination of Lead and Cadmium Extracted from Ceramic Foodware: Collaborative Study

2000 ◽  
Vol 83 (5) ◽  
pp. 1174-1188 ◽  
Author(s):  
Susan C Hight ◽  
N Ayyad ◽  
B Barnes ◽  
J Brown ◽  
B DePalma ◽  
...  
Keyword(s):  
Quality Control ◽  
Standard Deviation ◽  
Atomic Absorption ◽  
Graphite Furnace ◽  
Official Method ◽  
Lead And Cadmium ◽  
Modified Method ◽  
Relative Standard ◽  
Graphite Furnace Atomic Absorption ◽  
Atomic Absorption Spectrometric

Abstract A modification of the official flame atomic absorption spectrometric (FAAS) method for determining lead and cadmium extracted from ceramic foodware was collaboratively studied. In the modified method, graphite furnace atomic absorption spectrometry (GFAAS) is substituted for FAAS. The modified method also includes mandatory quality control procedures to improve method performance. The extraction procedure of the official method (leaching with 4% acetic acid for 24 h at room temperature) remains unchanged. Seven laboratories analyzed blind duplicate portions of 3 ceramicware leach solutions containing Pb at concentrations of 0.0196, 0.403, and 3.73 μg/mL and Cd at concentrations of 0.00236, 0.0456, and 0.544 μg/mL. Performance of the modified method compared well with that of the official method. The repeatability relative standard deviation (RSDr) ranged from 0.87 to 6.7% for Pb and from 3.7 to 11% for Cd. The reproducibility relative standard deviation (RSDR) ranged from 4.5 to 12% for Pb and from 7.0 to 11% for Cd. Accuracy of collaborator results was 97–98% for Pb and 93–101% for Cd. Quality control results and quantitation limits were excellent. Method quantitation limits varied among laboratories from 0.005 to 0.019 μg/mL for Pb and from 0.0004 to 0.0019 μg/mL for Cd. The modified method was adopted First Action by AOAC INTERNATIONAL.

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