What proportion of sodium sulfide to distilled water to test for lead?

MadSci Network: Environment & Ecology

Subject: What proportion of sodium sulfide to distilled water to test for lead?

Date: Fri Feb 2 08:29:05 2001
Posted by William
Grade level: 7-9 School: ABC Charter School
City: Calgary State/Province: Alberta Country: Canada
Area of science: Environment & Ecology
ID: 981120545.En

Message:


I am referring to a previous answer to someone's question on "How would I 
set up an experiment to test for lead in candles?" Your scientist's advise 
was to use sodium sulfide and distilled water. Could you tell me how much 
of these I should use to get the right concentration for the test? Also 
when the solution turns turbid if lead is presence, is that because it has 
turned into lead sulphide?  Thank you for helping me out.

Re: What proportion of sodium sulfide to distilled water to test for lead?

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