USEPA Method 415.3: Quantifying TOC, DOC, and SUVA (PDF)
- Author(s): Potter, Billy B.; Wimsatt, John C.
- Publications: Journal - American Water Works Association
- Issue Date: June 2012
- Volume / Number: 104, Number 6
- Page(s): E358-E369
- DOI: http://dx.doi.org/10.5942/jawwa.2012.104.0086
- Product Number: JAW_0076119
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The U.S. Environmental Protection Agency has developed a
reproducible method that supports the monitoring requirements
specified in the Disinfectants/Disinfection Byproducts Rule
(D/DBPR). Method 415.3 provides for the quantification of total
organic carbon (TOC) and dissolved organic carbon (DOC) in
source waters and drinking waters, as well as the determination of
specific ultraviolet absorbance (SUVA) at 254 nm, protocols for
inorganic carbon interference removal, and DOC filter evaluation
and selection. During method development experiments, TOC,
DOC, and SUVA were determined for seven source waters using
five instrument types. Mean values for DOC, TOC, and SUVA
ranged from 0.42 to 3.38 mg/L, 0.42 to 3.64 mg/L, and 1.95 to
3.37 L/mg-m, respectively, with pooled fortified recoveries of
102.7?1.8%. The data generated using method 415.3 showed
improved accuracy and precision over existing methods. The
method was ultimately approved as part of the Stage 2 D/DBPR.
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