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Register a new userThe impact of the method and the source of irrigation in fruiting and tuber vegetables content of heavy metals
تأثير طرائق و مصدر الريّ في محتوى الخضار الثمرية و الدرنية من العناصر الثقيلة
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Aِl-Baath University ورقة بحثية
Publication date
2015
fields
Food Sciences
and research's language is
العربية
Created by
Shamra Editor
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أجري البحث بهدف التحري عن الملوثات المعدنية ( الرصاص, الكادميوم, الزرنيخ), و التي تنتقل من مياه الريّ إلى العديد من أنواع الخضار التي تروى بها و مقارنة مدى التلوث حسب مصدر الريّ (مياه صرف صحي معالجة، مياه آبار)، و نوع الخضار (خضار ثمرية، درنية)، و طريقة الريّ المتبعة (الريّ السطحي، الريّ الحديث).
The research was conducted in order to investigate the metal contaminants (lead Pb،cadmium Cd ، arsenic As), which moves from irrigation water to many types of vegetables which irrigated from it,and compared the extent of pollution by irrigation source (treatment sewage، wells water), and by vegetable type (Vegetables, fruit plants, tuberous), and by the irrigation method used (surface irrigation ، modern irrigation).
References used
APHA (2000) Standard Methods for the Examination of Water and Wastewater, 16th Ed.,Washington, DC. U.S.A
Ali,mMohamed.,Alqhtani,Khairia.20120. Assessment of some heavy metals in vegetables, cereals and fruits in Saudi Arabian markets,. Egyptian Journal of Aquatic Research (2012) 38, 31–37
Al Jassir, M.S., Shaker, A., Khaliq, M.A., 2005. Deposition of heavymetals on green leafy vegetables sold on roadsides of Riyadh city,Saudi Arabia. Bulletin of Environment Contamination and Toxicology75, 1020–1027
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Heavy metals determination was carried out in ٢٤ of vegetable crops, belong
to three groups, i.e.: Leaf, Fruit and Tuber vegetable crops. Lead, Chromium,
Cadmium and Mercury, were determined using Atomic Absorption
Spectroscopy provided with Graph
ite furnace. Vegetable samples were
collected from six sites along the irrigation water source for Barada and
Ghouta for two seasons, ٩٥-٩٦ and ٩٦-٩٧, to evaluate the effect of water source
(surface polluted water and ground water) on the heavy metals content of
vegetables.
In this study the concentration of (Cu, Cr, Cd, Fe, Mn, Ni, Zn , Pb ,V &Co) in
some sedimentary columns and pore-water extracted from the estuary of Al-Kabeer
alshemali river was determined during four seasons .the concentrations of these metals
w
ere determined using atomic absorption spectroscopy (AAS). The columns were cut into
slices with 2cm of thickness ,the pore water at every slice was extracted using
centrifugation (7000 r/min).the results showed that the concentration increased from
surface(deep=0cm, rich of O2) up to the 4cm of deep ,then the concentration decreased in
deeper slices (down of 4cm,deficiency of O2) and the concentration of Fe and Mn from
high ranking ppm. The rest of the items were relatively lower ranking ppb, but Co, Cd and
V were low. meat increased the concentration of all these elements in the spring and
summer, compared with the values in the winter and autumn, due to increasing human
activities on the one hand and the high temperature on the other hand, leading to increased
activities of bacterial that leads to the decomposition of organic material that may increase
the ratios of these elements in the pore water.
A comparison was made between Papaver and Malva plants in Aljaouba area between the grown plants on the roadside (0-3 m) , and also50 m far nearly exposure to the pollution . The study in volves a comparison analyses for the concentrations of some he
avy metals in the tissues of two studied plants ,during the period April-July 2010 , in order to show the effect of the increased number of vehicles on the concentrations of these metals . The analyses showed that a change of the mineral content of some heavy metals in the tissues of the leaf, according to its far and near to the road , where concentrations of Pb , Cu , Fe , were decreased in various rates , according to the faring stepwise from the road . It also noticed an increasing inthe concentrations of these elements by increasing number of vehicles . The results showed also that plants , which are growing on the roadside , are affected by the pollutants emitted by exhausts , where plant length , leaf weight , leaf area , water content were decreased . The Pollutionalso affected the reproduction and production structures , where the number of flowers and its weight , distances of petals , number of stamens , number of fruits and their weight were decreased .
The reasearch was carried out during 2009 – 2010 in Al – Hasaka – Amoda - to study
the effect of cattle manure at the rat of 30 ton / ha , and four organic green manure ( Lentil,
Vetch, Faba bean and Barely) on soil content of organic matter and so
me mineral elements
compared with chemical fertilizer 400 kg / ha urea , 83 kg / ha P2O5 and 25 kg / ha K2O .
The manure significantly increased organic matter , phosphorus and potassium
concentrations compared with other fertilizers ( chemical and green fertilizers ) . All green
fertilizers ( Lentil , Vetch , Faba bean and Barely ) significantly increased organic matter ,
nitrogen and potassium concentration compared with the control without using any
fertilizer , the tillage depth ( 0 – 10 ) cm significantly increased soil content of organic
matter and nitrogen compared with deeper tillage ( 25 – 30 ) cm during the two seasons .
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.
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