USGS-NWQL: I-3487-98:  Comparison of In-Bottle and Other Whole-Water Digestion Procedures

  • Summary
  • Analytes
  • Revision
  • Data and Sites
Official Method Name
Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory - Comparison of a Nitric Acid In-Bottle Digestion Procedure to Other Whole-Water Digestion Procedures
Current Revision
1999
Media
WATER
Instrumentation
Inductively Coupled Plasma - Mass Spectrometry
Method Subcategory
Inorganic
Method Source
  USGS-NWQL
Citation
Garbarino, J.R., and Hoffman, G.L., 1999, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory -- Comparison of nitric acid in-bottle digestion procedure to other whole-water digestion procedures: U.S. Geological Survey Open-File Report 99-094.
Brief Method Summary
Hoffman and others (1996) have previously described an HCl in-bottle digestion procedure. The HNO3 in-bottle procedure requires minor modifications to the HCl in-bottle procedure. After the preparatory procedure, the digestate can be analyzed by using DCP-AES, ICP-AES, ICP-MS, HG-AAS, GF-AAS and F-AAS. Details of these analytical methods can be obtained in Fishman (1993), Fishman and Friedman (1989), Garbarino and Struzeski (1998), and Jones and Garbarino (1999).
Scope and Application
This method was developed to digest whole-water samples by using an HNO3 in-bottle procedure to determine the elements listed in method I-1472-87.
Applicable Concentration Range
Interferences
There are no known interferences associated with procedures described in this report.
Quality Control Requirements
Quality-control samples area analyzed at a minimum of one in every ten samples. These QC samples include at least one of each of the following: blanks, quality control samples, third party check solutions, replicates, and spikes. Correlation coefficients for calibration curves must be at least 0.99. QC samples must fall within 1.5 standard deviations of the mean value. If all of the data-acceptance criteria in the SOPs are met, then the analytical data are acceptable.
Sample Handling
Description: 250 mL Polyethylene bottle, acid-rinsed. Treatment and Preservation: Filter through 0.45-um filter, use filtered sample to rinse containers and acidify sample with nitric acid (HNO3) to pH < 2.
Maximum Holding Time
180 days from sampling
Relative Cost
Sample Preparation Methods