COMPARISON OF HEAVY METALS AND TRACE ELEMENTS CONTENTS IN TW O SW EET POTATO VARIETIES FOR DIFFERENT EATING WAYS

摘要

Two sweet potato varieties suitable for different eating ways were selected to determine the ability to absorb trace elements and heavy metals. The results is very interesting: eight trace elements in variety Yanshu 25 were much high than those in variety Jishu 26, which proved that different varieties have different ability to absorb the trance elements. The heavy metals contents were highly similar to the contents of trace elements in two kinds of sweet Potato. When we choose sweet potato varieties with different eating methods, we can choose them according to the content of trace elements or heavy metals in them.