Lofts, Stephen <br/><br/>
Deriving soil critical limits for Cu, Zn, Cd, and Pb: a method based on free ion concentrations.  [electronic resource] 

 -  Environmental science & technology  Jul 2004 
 - 3623-31 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't 
<br/><br/><label>ISSN: </label>0013-936X 
<br/><br/><label>Standard No.: </label>10.1021/es030155h  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cations--chemistry<br/>Chemistry Techniques, Analytical--methods<br/>Ecosystem<br/>Hydrogen-Ion Concentration<br/>Linear Models<br/>Metals, Heavy--analysis<br/>Models, Chemical<br/>Reference Standards<br/>Soil--analysis<br/>Toxicology--methods