In this research, the optimal conditions for some factors affecting the determination of mercury concentrations by Cold Vapor Atomic Absorption Spectrometry method were studied. These factors included: delay time, in addition to bo
th: Reductant concentration and Linearity of Calibration Curve.The delay time was studied within the range (30 -60 S), while the concentrations of the reductant were studied within the range (1–12 % w/v), As for the linearity of the calibration curve, the atomic absorbance wasmeasured within the range of mercury concentrations (5 -100 μg/L)
This research focuses on identifying the concentration of some heavy metal elements (Lead (Pb) cadmium (Cd)) in different types of marine sediments dispersed along Tratous coastal area using the Atomic Absorption (Atomic Absorption Spectrophotomete
r: AAS). The samples were collected from regions differ from each other in terms of geographical location and nature of the pollutants.
The present study was testing the three type of waste (orang crusts, pomegranate crusts, banana crusts) for repairing some lab ecosystems through their ability of treating contaminated soil with some pollutants metals that produced from some laborato
ry equipments. C = contaminated soil only that consider to be a control test. Both plants were exposed to heavy elements (Pb, Cd, Cr) for a period of three weeks and record the tolerance range weekly, all data recorded was triplicate. Atomic absorption spectrometer used to estimated metals concentrations. The results show that mostly there are significant differences at each mineral concentration towards treatments during tested period. Aim of this work is to find a simple and friendly ways to limit the contamination in aqua ecosystem.
This research focuses on the concentrations of some heavy metals (pb, cd, cu) were determined in water and sedimentary samples from different areas along the coast of Lattakia city during the months of August 2020 and February 2021 using the Atomic A
bsorption Spectroscopy.
This study deals with the determination of total mercury concentration in the water
taken from three sites on Al-Kabeer Al-Shemaly River ( near the industrial area and Al-
Damat Lake, and 16 Tishreen Lake), also the effect of some physio-chemical p
arameters
including: DO, pH, T °C. of water in the three sites was studied.
Results showed that the total mercury concentration was low in general, where the
medium concentration in the three studied sites was 0.29 ppb and it was less than the
permission level of total mercury in the surface water(> 10 ppb), the higher value of the
medium concentration of total mercury(0.35, 0.31, 0.21)ppb was recorded in the Industrial
Area, Damat Lake, then 16 Tishreen Lake, respectively. For the changes in the total
concentration of mercury in the three studied sites during seasons of a year, was higher in
Summer comparing with other seasons. The results showed positive correlation coefficient
between the total mercury concentration and temperature, pH value, but it was negative
with DO in Summer.
This research focuses on determination the concentration of some heavy metal
elements (Nickel Ni and Cadmium Cd) in the coastal water sediments of Ras Al-Basit
(Latakia ) during the period that range between Autumn 2013 and Summer 2014 using the
A
tomic Absorption (Atomic Absorption Spectrophotometer: AAS) at two different (closed
and open) geographical regions.
The results of the research indicate a correlation monumental between the change in
the concentration of studied metallic elements (Ni & Cd), the quality and sediment
sampling sites on the one hand, and the sources of pollution on the other. It observed the
rule of fine sand with minor amount of clay in the sediments collected from closed area;
with high concentrations of both Nickel (755.50mg/Kg), and Cadmium (71.30μg/ Kg),
compared with the open area while the majority of the sediments are medium sand with
low Nickel and Cadmium concentrations (38.85mg/Kg; 13.31μg/ Kg).
The samples of bee pollen were collected from inside and outside
the honey beehives of apiaries situated in five different locations of
Latakia; Al-Qardahah, Al-Haffeh, Jableh, Latakia city and Eastern
Entryway to Latakia during the autumn in 2014
. The
concentrations of three heavy metals, zinc (Zn), lead (Pb), cadmium
(Cd) were determined in pollen by using atomic absorption.
The study focused in this research to determine the trace of some heavy metal
elements (Copper Cu, Cadmium Cd, Lead Pb) in some types of marine macroalgae
scattered on the shore of the city of Banias during 2014, using atomic absorption
spectrosco
py (technology flame Flame- AAS).
The results indicate that the concentrationsofeach of Copper, Cadmium and Lead
have a link with macroalgae types, sampling sites from direction, and Source of pollution
on the other hand; it was observed that the accumulation of heavy metals in both of
Sargassum vulgare (browen algae) and Enteromorpha linza (green algae) was more than
red algae.
Copper concentration ranged between 1.291 ppm and 11.716 ppm in the studied
species, Reaching the highest value in the Enteromorpha linzaalgae and the lowest in
Sargassum vulgarealgae, the highest value of Lead element was (59.354 ppm) in
Enteromorpha linzaand the lowest value of it was (6.46 ppm) in Ulva fasciata, While the
highest values of the element Cadmium recorded (10.457 ppm) in Enteromorpha linza and
the lowest (0.666 ppm) in Ulva fasciata.
This study was conducted to determine some heavy minerals in different types of
canned meat sold in the domestic market. Most of those cans were imported and processed
in different countries and they have different brands. The chosen samples after
ashing were
prepared by using concentrated extra pure Nitric and Hydrochloric acids .The ratios of the
minerals )pb , Cd , Ni , Zn , Cu , Mn , Fe ( were determined by Atomic Absorption
Spectrophotometry , and the content was expressed as (p.p.m) wet weight. It was observed
that the levels of Lead, Iron, and Cadimum, in all different samples were higher than the
permitted limlts according to the Syrian Standards . The Cu level in both , tuna and sardine
was within the permitted limits, but it was higher in the chicken Lunchoen. The level of
Zinc was within the permitted limits according to the Syrian standards. The highest ratio of
Lead was observed in the sardine imported from Morocco which was 8.765 p.p.m and in
the Lunchoen processed in Syria which was 5.18 p.p.m ,and both ratios are much higher
than the permitted limits according to the Syrian Standards.
The aim of this study was to determine the trace of some heavy metals elements pb,
Cd, Cu, Zn & Fe in the leaves and periderm of the Avundodonax L. using Atomic
absorption spectroscopy. The samples were collected from twenty locations and divided
into four groups according to traffic and human activities.
The results showed an excess in the concentration of lead, cadmium and copper in
the leaves and periderm of the Avundodonax L., which enables the use of this plant as a
vital indicator for the pollution by these heavy metals. The concentration of cadmium in
the leaves and periderm ranged between (0.231- 6.278ppm) and for lead between(1.057-
47.592ppm) and copper between(1.022 -45.771ppm). While the concentration of both zinc
and iron remained within the permissible natural limits.
