تقدير المعادن في بعض تمور المملكة العربية السعودية و منتجاتها بطريقتي الامتصاص الذري و الانبعاث الذري اللهبي

الملخص EN

A reserch study was conducted for the determination of these metals in some Saudi Arabian dates (Brney and Mektomy from the Western region, Nboot Safe and Khodry from the Central region, Shebebi and Khenizi from the Eastern region) and some date products (dibs and date jam).

After samples preparation by wet ashing, sodium and potassium were determined by atomic emission spectrometry.

Magnesium, calcium, manganese, iron, cobalt, copper and zinc were determined by atomic absorption spectrometry.

The results of the chemical analysis of metallic elements in the examined date samples declare the presence of high quantities of potassium, calcium, magnesium and sodium, while the other metals; iron, zinc, copper, manganese and cobalt were found in lower amounts.

The results of the chemical analysis of metallic elements in the examined date products declare the presence of high quantities of potassium, calcium, magnesium and sodium, while the other metals; iron, zinc, copper, manganese and cobalt were found in lower amounts.

The metal contents of the date products from sodium and zinc were higher than those of the date samples.

Both dibs and date jam were found to contain lower amounts of potassium, calcium, magnesium, iron, copper and manganese than date samples.

By calculating the quantities of metals that are provided to Saudi Arabian person from the daily intake of the dates it was found that dates are considered to be an important nutritional source to provide the Saudi Arabian person with metals.

The daily intake from dates provides him with the majority of his needs from metals specially potassium, magnesium, iron, copper and calcium, and to a less extent from manganese, zinc and sodium.

Regarding cobalt this study illustrates that the daily intake of dates provide the Saudi Arabian person with several times of his stated need.