Lab Code 2613 |
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Description:
Organic Carbon, Dissolved, (DOC), Water, Filtered, GLASS FIBER, Sulfuric Acid
Preserved |
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Analyzing
Laboratory: USGS - National Water Quality Laboratory, Denver, CO |
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Parameter Name |
CAS Number |
RL |
Unit |
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Organic carbon |
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0.33 |
mg/L |
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Container Requirements |
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100mL DOC |
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Description:
125 mL Glass bottle, amber |
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Treatment
and Preservation: Bottle baked at 450 deg C by laboratory. DO NOT RINSE
BOTTLE BUT RINSE FILTER WITH ORGANIC-FREE WATER. Filter sample using supor or
glass fiber filter (see Lab Code description above for filter type) , acidify
to pH < 2 with 1 mL of 4.5N sulfuric acid (H2SO4), chill and maintain at 4
deg C, ship immediately. Glass fiber filter may be retained for Total
Particulate Carbon or Particulate Inorganic Carbon analysis. |
References |
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1. OFR
92-480 |
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Brenton,
R.W., and Arnett, T.L., 1993, Methods of analysis by the U.S. Geological
Survey National Water Quality Laboratory--Determination of dissolved organic
carbon by uv-promoted persulfate oxidation and infrared spectrometry: U.S.
Geological Survey Open-File Report 92-480, 12 p. |
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Method ID: O-1120-92 |
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