Zhang Chen-dong
2008
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Journal
Dyestuffs and coloration
Abstract
Sodium 2,3-dimercaptopropane-1-sulfonate(Na-DMPS)is usually used as an antidote to both heavy metal salt poisoning and some common pesticides.This paper mainly concerns the precipitation process.The lead acetate and zinc sulfate were used as precipitators for comparison,and it was shown that the lead acetate was better.The yield of lead salt could be improved by changing some experimental parameters.The results showed that prolonging sulfhydrylation time could increased the yield of lead salt.The best feed ratio of sodium allylsulfonate to lead acetate was 1∶1,and sodium allylsulfonate to potassium hydrogen sulfide was 1∶2.