| 摘要 |
<p>An aq. soln. of trace elements is prepd. with the aid of complexing agents and other additives. Glutamic acid or its water soluble salts or asparaginic acid or its water soluble salts are used as complexing agents. Following complexed elements are found in soln.: Mg, Zn, Mn, Cu, Mo, V and Cr. Prepns. also contain, antioxidant, acidifying agent and preservative.</p> |
