•  
  •  
 

Authors

Nicholas Knight

Document Type

Research

Abstract

A gram of the substance is weighed into a porcelain crucible of 150 c.c. capacity, 50 c.c. of dilute nitric acid are added, and evaporated to dryness on the water bath. The nitric acid is removed with sulphuric acid. This treatment changes the lead sulphide that may be present to lead sulphate, which with the silica is removed by filtration.

Publication Date

1909

Journal Title

Proceedings of the Iowa Academy of Science

Volume

16

Issue

1

First Page

143

Last Page

144

Copyright

©1909 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.