Data Summary Report for Savannah River Integrator Operable Unit Fish Tissue Page: 44 of 234
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3.0 Validation
Table 3.5 Holding Time Criteria (cont.)
Analytes Reference Extraction/Digestion Analysis
Volatile organic compounds EGG OH 14 days from collection 14 days from extractionAction
When holding times are exceeded, the following qualifiers are applied:STORET Code:Q
J-for detects
UJ-for nondetects
If holding time is exceeded by 200% or more, the following qualifiers are applied
STORET Code:QLJ-for detects
R-for nondetects
None of 2,260 environmental sample records were qualified.
Discussion
Most methods specify limits on the time that can pass between sample collection and extraction or analysis.
When holding times are exceeded, sample integrity may be compromised due to chemical and/or physical
effects that can bias sample results either positively or negatively.
Sample Preservation
Criteria
Sample preservation requirements are determined by regulatory guidance, method specifications, and
laboratory protocols. General requirements follow.
Soil
Inorganics: Inorganic analyses for metals require that soil samples be kept between 20 and 6 C.
Organics: Organic analyses for chlorinated hydrocarbons, haloethers, PCBs, pesticides, phenols, phthalate
esters, purgeable aromatic hydrocarbons, purgeable halocarbons, tetrachlorodibenzo-p-dioxin isomers, and
total organic carbon also require that soil samples be kept between 20 and 6 C. Soil samples to be
analyzed for nitroaromatics and isophorone, nitrosamines, or polynuclear aromatic hydrocarbons must be
stored in the dark at temperatures between 20 and 6 C.
Water
Inorganics: Water samples collected for metals analyses should have nitric acid added so that pH is less
than 2.
Organics: Water samples for all organic analyses should be kept between 20 and 6 C. Purgeable aromatic
hydrocarbon analyses require that hydrochloric acid be added so that pH is less than 2, and total organic
carbon analysis requires that hydrochloric acid or sulfuric acid be added so that pH is less than 2. SamplesFG Code:
FG Code:
Findings
Data Summary Report for Savannah River Integrator Operable Unit Fish Tissue
(WSRC-TR-99-00386)24
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Craig, B. Data Summary Report for Savannah River Integrator Operable Unit Fish Tissue, report, February 13, 2001; South Carolina. (https://digital.library.unt.edu/ark:/67531/metadc719923/m1/44/: accessed April 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.