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Procedure for Preserving Lead in Drinking Water Samples
Author(s) -
Feldmann Charles R.,
Walasek James B.,
Lobring Larry B.
Publication year - 1992
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1992.tb07396.x
Subject(s) - nitric acid , lead (geology) , agency (philosophy) , lead exposure , environmental science , environmental health , business , chemistry , engineering , medicine , telecommunications , biology , inorganic chemistry , philosophy , epistemology , latency (audio) , paleontology
The US Environmental Protection Agency's requirement that drinking water samples collected for lead analysis be acidified at the time of collection poses two problems: (1) restrictions on mailing nitric acid and (2) safety concerns associated with the possible handling of nitric acid by nontechnical persons. A study was undertaken that showed that acidification could be delayed up to 14 days and that analysis could then be carried out after waiting 28 h, without loss of lead.