تلوث مياه الشرب بالمعادن الثقيلة عن طريق برادات المياه

الملخص EN

This investigation was carried out to study the contamination of potable water by cadmium, lead, iron, zinc and copper from water coolers.

Three categories of water coolers were used.

These included the following : 1-Coolers have excellent tanks, and the cooling systems are fixed outside.

2-Coolers have good tanks, and the cooling systems (as copper pipes) are fixed either inside or outside the tanks.

3-Coolers have acceptable tanks and the cooling systems (as copper pipes) are fixed inside the tanks.

The results indicated that the contamination of water via the cooler category was as follows: * First category did not contaminate the water clearly.

* Second category contaminated the water particularly with copper and lead.

* Third category contaminated the water particularly with zinc, copper, cadmium and lead.

The results also showed that the contamination of water by heavy metals was increased with time, and considerable amounts of metals were released from the coolers when cooling of water was stopped.