Student Scholar Symposium Abstracts and Posters

Document Type


Publication Date

Spring 5-14-2015

Faculty Advisor(s)

Dan Wellman


In the pursuit of green chemistry, adequate substitutes for lead acetate and hydrogen sulfide were investigated for use in the ACS test procedure for stabilizer in meta-phosphoric acid. In the current ACS procedure lead acetate is used to form insoluble lead phosphate. In order to remove lead from the solution lanthanum chloride was investigated with positive results. Hydrogen Sulfide is currently used to precipitate lead by forming insoluble lead sulfide. Several substitutes including oxalic acid and sulfuric acid were investigated. Preliminary testing showed that lanthanum chloride and oxalic acid are sufficient in precipitating phosphate and lead out of the sample solution


Presented at the Spring 2015 Student Research Day at Chapman University.

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Chemistry Commons