Keywords : heavy metals


Capacity Growth of Mycorrhiza Species at Different Concentrations of Heavy Metals

Mazin N. Fadhel; Mawj R. Al-Hamdany

Rafidain Journal of Science, 2019, Volume 28, Issue 3, Pages 38-47
DOI: 10.33899/rjs.2019.163155

     The study investigates the possibility of three types of R.rosulus, S.varigatus, P.involutus in removing and lowering the ascending concentrations of copper and zinc elements, and during three incubation and contact periods (5,7 and 10 days) and comparing the growth of isolates with control samples. Type P.involutus is the most efficient in the removal by observing the growth of isolates by increasing its diameter compared to the control samples and the concentrations of copper and zinc and for all the days of incubation, while the type S.varigatus was the highest growth at the low concentrations of copper and zinc only and for all periods of incubation, the type R.rosulus. The diameter  was smaller as compared to control samples All elemental concentrations of copper and zinc except at concentration (2.5 ppm), and is generally observed increase diameters of the isolates of the three types of increasing periods of incubation and all elemental concentrations of copper and zinc, and this increase is less than at high concentrations of these elements and of all species studied.

Bioaccumulation of Lead and Zinc Elements in Plant Shoot of Phragmatis australis Grown in Wady Al-Kharrzi at Mosul City, Iraq

Abdul-Aziz Y. Al-Saffawi; Waffaa E. Al Sinjari

Rafidain Journal of Science, 2019, Volume 28, Issue 1, Pages 35-44
DOI: 10.33899/rjs.2019.159407

The quality of Wady Al-Kharrzi wastewater which is considered as one of sources of Tigris river pollution in Mosul city have been investigated, Concentrations of Lead and Zinc tests of wastewater and plant samples which were taken from different sites of the Wady have been conducted to know the degree of contamination and the role of Phragmatis australis in phytoremediation.
The results indicated high concentration of the elements Pb and Zn either in the Wady wastewater (384, 119) ug. L-1 or leaves and stems tissues of Phragmatis australis, which reached to (4.992, 0.719 ) and (7.304, 3.594) ug. Gm-1 dry weight respectively. Also, significant self-purification were noted along the Wady wastewater flow, through the role of phytoremediation of the aquatic plants, with Biological accumulation coefficient of Pb and Zn in stem tissues get to (31.34- 36.33) respectively.
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A Study of Heavy and Essential Metals in the Amniotic Fluid for Pregnants Associated with High Blood Pressure

Eman S. Mahmood; Luay A. Al-Helaly

Rafidain Journal of Science, 2019, Volume 28, Issue 1, Pages 53-68
DOI: 10.33899/rjs.2019.159408

The research includes studying of some heavy metals and metal elements in amniotic fluid for pregnant associated with high blood pressure, which includes these metals: Lead (Pb), Cadmium(Cd), Chromium(Cr), Aluminum(Al), and essential metals for Magnesium(Mg), Calcium(Ca), Zinc(Zn), Iron(Fe), Copper(Cu) and Manganese(Mn). The study was done in Mosul city on (75) samples that had hypertension, and (78) with healthy pregnancies as control group, the age of pregnant women with hypertension and control group ranged from (16-45) year, then specimens divided into three age groups: The first group (16-25) year, the second group (26-35) year and the third group (36-45) year.
The results showed that there was a significant increase in heavy metals in pregnant women associated with high blood pressure in the levels of Pb, Cd, Cr and Al compared with the group of normal pregnant women, as well as a significant increase in the levels of essential metals of Cu and Fe and a significant decrease in levels: Mg, Ca, Zn and Mn.
Moreover, it was noted that there is a significant increase in the levels of heavy metals for Pb, Cd and Cr in pregnant women smokers with the pressure associated with pregnant women compared to non-smokers group and a significant decrease in essential metals for both Zn and Mn levels.

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Estimation of the Concentrations of some Heavy Metals in Water and Sediments of Tigris River in Mosul City

Eman S. Al-Sarraj; Muna H. Jankeer; Sati M. Al-Rawi

Rafidain Journal of Science, 2019, Volume 28, Issue 1, Pages 1-10
DOI: 10.33899/rjs.2019.159401

Tigris river is considered among the most important sources of water in Iraq. Therefore, an ecological study has been conducted on this river within a stretch in Mosul city starting from Mushirfa site north till Al-Busaif village in the south. The study aimed at verifying the impact of various pollutants including heavy metals on water and sediments. The study started on Spring 2011 through Winter 2012.
The heavy metals have been extracted by stander method using Atomic Absorption Spectrophotometer and the estimation of some heavy metal concentrations such as (Zn, Cu, Cd, and Pb) in river water and sediments has been done.
The result reveled a significant increase in the concentration of studied heavy metals in water and sediments in the area of Al-Busaif compared with Mushirfa area (as a control group). The concentration of heavy metal in water followed the descending order: Zn< Cu< Pb .

Spread and Distribution Antibiotics and Heavy Metals Resistance and Virulence Factors Possession in some Members of Enterobacteria Isolated from Various Sources

Muhsin A. Essa; Mohammed A. Abdulah

Rafidain Journal of Science, 2018, Volume 27, Issue 4, Pages 243-257
DOI: 10.33899/rjs.2018.159325

This study was conducted in an attempt to investigate the spread and the distribution of antibiotics and heavy metals resistance characteristic and virulence factors possession in some Enterobacteria Escherichia coli & Salmonella typhimurium isolated from various sources.
The results of antibiotics sensitivity test showed a clear variation in the distribution and the spread of the resistance feature these antibiotics whether in the isolates from the same source or within different sources for both E. coli and S. typhimurium. Moreover, most of the isolates showed multiple resistance feature against the antibiotics and resistance against Amoxicillin, Ampicillin and Erythromycin was the most common amongst the studied isolates.
The heavy metals(CuSo4,CoCl2,NiCl2,CdCl2 and HgCl2) sensitivity results showed a clear resistance against these metals salts and the highest percentage of the E. coli and the S. typhimurium was against NiCl2 which was (93.3%) and (73.3%) respectively. Also the distribution and the spread of this feature was variant based on the isolate and the source of the isolate.
From the results of investigating some virulence factors (Haemolysin, Protease, Urease and Gelatinase) results showed that the production of Haemolysin was common amongst many isolates of the two types of bacteria and the same was for the Protease in the Escherichia coli. The distribution of the virulence factors varied according to the isolates and the sources of these isolates, while results showed that the isolates do not have the other studied virulence factors
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Assessment of some Heavy Metals in Muscle Tissue of Silurus triostegus from Derbendikhan Reservoir, Kurdistan Region –Iraq

Rezan O. Rasheed; Mohmmed H. Khudor; Awatif H. Issa; Farooq L. Jassim; Mohammed K. Al-Wiswasy; Hadeel T. Al-Hadithi; Haifa O. Al-Shaheen; Quds A. Omer; Ahmed H. Al-Hamdani; Fadhila S. Al-Doski; Zainab A. Al-Jawad; Haitham M. Al-Habib; Noha M. Yahya; Luma M. Tohala; Moath H. Mustafa; Tariq A. Mahmoud; Wadala A. Bashir; Wadala A. Bashir; Tariq A. Mahmoud; Moath H. Mustafa; Nabeel H. Buttrus; Amer A. Taqa; Eman M. Rumadthan; H. Uekusa; Nawfal Y. Jamil; Marwa T. Mahmood; Noor A. Mustafa; Samir M. Ahmad; Hala K. Saleh

Rafidain Journal of Science, 2012, Volume 23, Issue 1, Pages 11-18
DOI: 10.33899/rjs.2012.29081

Derbendikhan reservoir is located on the south east of Sulaimani province between longitude 35° 6' 35”N and latitude, 45° 41' 20" E, and it is the second largest reservoir in the Iraqi Kurdistan region at an altitude of about 485 m above sea level. More than twenty genera of fishes are endemic to this reservoir, Silurus triostegus is one of them, which was selected to determine the amount of heavy metals that accumulated in the muscle tissue. The results revealed that the metals were accumulated in the following descending order (Fe

Keywords

heavy metals
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Derbendikhan reservoir
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Silurus triostegus