The modified nat-ural macromolecular chelating agent including starch and fiber, are stable, effective, and less toxic, with lowcost and wide source.

• 改性天然高分子螯合剂其原料淀粉和纤维素是一种来源既便宜又广泛的天然高分子,经改性后的产品对捕集重金属离子具有低成本、高效、低毒的优势。