The concentrations of copper (Cu) and zinc (Zn) in samples of some cereals available at
local markets in Syria weredetermined, after nitric digestion, using Atomic Absorption
Spectrometry. The study showed that the heavy metals were present in all
samples at different
levels. The concentration of heavy metals varied from trace to higher concentration.
The maximum level of copper (Cu) in the cereal samples was 0.426 mg kg-1 on dry
weight basis, where the maximum level of zinc (Zn) in the cereal samples was 2.325mg mg kg-
1 on dry weight basis. The analytical results obtained for the heavy metals indicate that the
copper and zinc were present in all samples at concentration well below the acceptable
concentration recommended by the World Health Organization.
The concentrations of Copper (Cu) and Zinc (Zn) in samples of some spices
available at some local markets in Syria were determined, after nitric digestion, using
Atomic Absorption Spectrometry. The study showed differences in metal concentrations
according to the edible part. Studied heavy metals were present in all samples at different
levels. The concentration of Copper (Cu) and Zinc varied from trace to higher
concentration. The maximum level of Copper (Cu) in the spices samples was 0.668 mg/kg.
The maximum level of Zinc (Zn) in the spices samples was 2.523mg/kg. The analytical
results obtained for the heavy metals indicate that the Copper and Zinc were present in all
samples at concentration well below the acceptable daily intake recommended by the
World Health Organization.
يحقق مبيد Trifluraline مكافحة فعالة لعدد كبير من أنواع الأعشاب الضارة التي ترافق محصول
القطن حيث يستعمل وقت الزراعة على التربة مباشرة و يخلط في الطبقة السطحية منها. إلا أن الأثر
المتبقي لجزيئات المبيد الموجودة في مقطع التربة الزراعية و حتى عمق ٢٥
- ٣٠ سم يؤثر في إنبات
بذور بعض أنواع الأعشاب التي ترافق المحصول اللاحق زيادة أو نقصانًا. و هكذا تتغير كثافة نباتات
الأعشاب في واحدة المساحة التي ترافق هذا المحصول.
the residual lead effect in cows milk was
studied in the Governant of Tartous. For this end,135 dairy cows in
different milking seasons and from three different farm stationes
(Zahed cow station,Cement factory farm station and Banias refinery
cow
station) were used.
The objective of the study was to accurately determine lead
concectrations in cows milk in the three different farms. Samples of
milk,soil,water and feedstuff were collected and lead concentration
was determined then statistically analyzed.
