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Comparison of the Zinc Sulfate and Immunofluorescence Techniques for Detecting Giardia and Cryptosporidium
Author(s) -
LeChevallier Mark W.,
Trok Thomas M.,
Burns Michael O.,
Lee Ramon G.
Publication year - 1990
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.1551-8833.1990.tb07023.x
Subject(s) - cryptosporidium , giardia , immunofluorescence , zinc , microbiology and biotechnology , biology , chemistry , feces , antibody , immunology , organic chemistry
This study compared an immunofluorescence (IFA) method for the simultaneous detection of Giardia and Cryptosporidium in water with the zinc sulfate flotation and Lugol's iodine method. The results show that the IFA technique detected approximately 12 times more Giardia cysts in surface‐water samples than the zinc sulfate method. In addition, Cryptosporidium was detected in several samples. The implications of parasite detection methodology are discussed in relation to the Surface Water Treatment Rule.