对虾育苗增效剂络合重金属离子的研究

STUDIES ON THE COMPLEXING CAPACITIES OF GROWTH SYNER GIST FOR REARING SHRIMP FRY WITH HEAVY METALS

本文用物理涂汞膜电极阳极溶出伏安法,离子选择电极测定法研究了不同原料对虾育苗增效剂(GS)与二价重金属离子的络合能力和络合容量。结果表明,在天然海水介质中,不同原料的GS与Pb^(2+),Cu^(2+),Zn^(2+),Cd^(2+)均可生成稳定络合物,但络合容量有差异,并随着介质中离子强度的增加而逐渐减小。本工作为确定GS在水环境中具有解除重金属离子毒性,净化水质提供了理论依据。

The completing capacities, of Growth Synergist (GS) for rearing shrimps fry with heavy metals were examined by anodic stripping voltammetry with physically coating mercury film electrode and their complex ability were determined by the ion-selective electrode. The results showed that GS can. form. stable metal-GS complex compounds with Cu2+,Pb2+, Zn2+, Cd2+ in sea Water, The GS. from various raw materials had different complexing capacities which decrease with increase of ionic strength in medium.The paper provides theoretical basis for the study of the action of GS to detoxicate heavy metals ions and to purify water quality in the aquatic environment.