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  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > October  >
Chemical Education Today
Letters
The autors reply to: Waste Treatment in the Undergraduate Laboratory: Let the Students Do It!
John J. Nash, Susan C. Nurrenbern, and Jeanne A. R. Meyer
Purdue University, Department of Chemistry, West Lafayette, IN 47907
Cover
October 1997
Vol. 74 No. 10
p. 1152
Full Text

Author replies to Wiskamp.

Professor Wiskamp certainly raises an important point. We should be just as concerned about the removal of sulfide from the filtrate as removal of the transition metals. We have tested filtrates from this experiment with lead acetate test paper and have found that, as long as the waste treatment procedure is followed as we have described, sulfide ion is not detectable (the lower limit of the sensitivity of the lead acetate paper is 25 parts per million according to the manufacturer).
More Information
*  Citation
 Nash, John J.; Nurrenbern, Susan C.; Meyer, Jeanne A. R. J. Chem. Educ. 1997 74 1152.
*  Keywords
*  History
 Created:
Last Updated:		 July 27, 1999
June 23, 2005
Link to Letter added (May 2004).
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