scholarly journals A Correlation Study Between the Concentrations of Gold, Iron and Sulphate in Quartz Rock Samples Obtained from four Different Locations in Sudan

2018 ◽  
Vol 34 (5) ◽  
pp. 2384-2388
Author(s):  
Abualreish M. J. A. ◽  
Mohamed Ezeldin
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Negative Correlation ◽  
Iron Concentration ◽  
Absorption Spectrometry ◽  
Correlation Study ◽  
Southern Sudan ◽  
Central Sudan ◽  
Spectrometry Technique ◽  
Quartz Rock ◽  
Eastern Sudan

From four different locations in Sudan namely, Aboharaz (Central Sudan), Port – Sudan (Eastern Sudan) , Algaab (Western Sudan) and Ombal (Southern Sudan) three quartz rocks samples from each location were collected; All samples were analyzed to determine the concentration of Gold (Au(III)), Iron (Fe (III) and Sulphate(SO4-2). Atomic absorption spectrometry technique was used to determine the concentrations of Gold and Iron ,while that of Sulphate has been determined by the use of spectrometry technique. All samples showed positive correlation between gold and sulphate concentration except those collected from Port – Sudan, in addition a negative correlation between gold and iron concentration has been observed in all samples.

scholarly journals Ticks infesting animals in the Sudan and southern Sudan: Past and current status

2012 ◽  
Vol 79 (1) ◽  
Author(s):  
Ahmed A. ElGhali ◽  
Shawgi M. Hassan
Keyword(s):  
Nile Blue ◽  
South Sudan ◽  
Current Status ◽  
Southern Sudan ◽  
Central Sudan ◽  
The Republic ◽  
White Nile ◽  
South Kordofan ◽  
North And South ◽  
Eastern Sudan

In this review, we collate information about ticks identified in different parts of the Sudan and South Sudan since 1956 in order to identify gaps in tick prevalence and create a map of tick distribution. This will avail basic data for further research on ticks and policies for the control of tick-borne diseases. In this review, we discuss the situation in the Republic of South Sudan as well as Sudan. For this purpose we have divided Sudan into four regions, namely northern Sudan (Northern and River Nile states), central Sudan (Khartoum, Gazera, White Nile, Blue Nile and Sennar states), western Sudan (North and South Kordofan and North, South and West Darfour states) and eastern Sudan (Red Sea, Kassala and Gadarif states).

scholarly journals Assessment of heavy metal residues in Brazilian poultry and swine tissue

2014 ◽  
Vol 66 (2) ◽  
pp. 471-480 ◽  
Author(s):  
J. F. Alkmim Filho ◽  
A. Germano ◽  
W.L.S. Dibai ◽  
E.A. Vargas ◽  
M.M. Melo
Keyword(s):  
Heavy Metal ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Muscle Tissue ◽  
Absorption Spectrometry ◽  
Lead And Cadmium ◽  
Lead Levels ◽  
Spectrometry Technique ◽  
Low Levels ◽  
Swine Tissue

The aim of this study was to investigate the presence of arsenic, lead and cadmium residues in samples of liver, kidney and muscle of poultry and swine during the years from 2002 to 2008. A total of 1978 samples were analyzed: 1031 of poultry and 947 of swine from Brazilian slaughterhouses. The samples were analyzed at the National Agricultural Laboratory using the atomic absorption spectrometry technique. In poultry, the arsenic residues were detected in 53.6% of liver samples, although no results have exceeded the MRL. In kidneys, 39.7% of the samples showed measurable residues and there was no violation of the limits. Regarding lead, there were 5 contaminated liver samples and 24 contaminated kidney samples (1.5 and 3.6% respectively). In muscle tissue there was only one sample with residues. For cadmium, 3.8% of the samples were found below MRL. Cadmium residues were found in 110 kidney samples (16.3% of tested), but only one exceeded the legislation limits. In swine, arsenic residues were detected in 15.3% of liver samples, although no results exceeded the MRL. In kidneys, 14.2% of samples showed measurable residues. However, there was no violation of limits. Regarding lead levels, 7 liver samples and 18 kidney samples were contaminated (2.6 and 2.7% respectively). Cadmium was found below MRL in 14.9% of the analyzed samples. In kidneys, 448 samples (67.8% of the total tested) had cadmium residues and 4 samples exceeded the legislation limits. During the seven years of study (2002-2008), only 5 (0.25%) out of 1978 tested samples violated the Brazilian law. However, even with low levels of violation, monitoring is essential, since the number of samples with residues was often greater than the number of violations, and in some cases, such as cadmium in the kidneys, the majority of samples contained quantifiable residues and with levels often near the limits.

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