Quality Control At The Us Geological Survey National Water Quality Laboratory
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Author |
: |
Publisher |
: |
Total Pages |
: 4 |
Release |
: 1998 |
ISBN-10 |
: UCSD:31822024295008 |
ISBN-13 |
: |
Rating |
: 4/5 (08 Downloads) |
Synopsis Quality Control at the U.S. Geological Survey, National Water Quality Laboratory by :
Author |
: David E. McCurdy |
Publisher |
: |
Total Pages |
: 33 |
Release |
: 2008 |
ISBN-10 |
: LCCN:2008412802 |
ISBN-13 |
: |
Rating |
: 4/5 (02 Downloads) |
Synopsis Interpreting and Reporting Radiological Water-quality Data by : David E. McCurdy
Author |
: Berwyn E. Jones |
Publisher |
: |
Total Pages |
: 22 |
Release |
: 1988 |
ISBN-10 |
: UCR:31210025048941 |
ISBN-13 |
: |
Rating |
: 4/5 (41 Downloads) |
Synopsis Quality Control Manual of the U.S. Geological Survey's National Water Quality Laboratory by : Berwyn E. Jones
Author |
: J. D. Gordon |
Publisher |
: |
Total Pages |
: 8 |
Release |
: 2000 |
ISBN-10 |
: UOM:39015051993197 |
ISBN-13 |
: |
Rating |
: 4/5 (97 Downloads) |
Synopsis U.S. Geological Survey Quality-assurance Project for Sediment Analysis by : J. D. Gordon
Author |
: Virendra Kumar Jha |
Publisher |
: |
Total Pages |
: 46 |
Release |
: 2002 |
ISBN-10 |
: UOM:39015055456514 |
ISBN-13 |
: |
Rating |
: 4/5 (14 Downloads) |
Synopsis Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory by : Virendra Kumar Jha
Author |
: Linda M. Williams |
Publisher |
: |
Total Pages |
: 130 |
Release |
: 1996 |
ISBN-10 |
: UCR:31210010688024 |
ISBN-13 |
: |
Rating |
: 4/5 (24 Downloads) |
Synopsis Evaluation of Quality Assurance/quality Control Data Collected by the U.S. Geological Survey for Water-quality Activities at the Idaho National Engineering Laboratory, Idaho, 1989 Through 1993 by : Linda M. Williams
Author |
: Linda M. Williams |
Publisher |
: |
Total Pages |
: 92 |
Release |
: 1998 |
ISBN-10 |
: UCR:31210013191158 |
ISBN-13 |
: |
Rating |
: 4/5 (58 Downloads) |
Synopsis Evaluation of Quality-assurance/quality-control Data Collected by the U.S. Geological Survey from Wells and Springs Between the Southern Boundary of the Idaho National Engineering and Environmental Laboratory and the Hagerman Area, Idaho, 1989 Through 1995 by : Linda M. Williams
Author |
: Harriet Nash |
Publisher |
: Springer |
Total Pages |
: 204 |
Release |
: 1994-10-31 |
ISBN-10 |
: 9780412586200 |
ISBN-13 |
: 0412586207 |
Rating |
: 4/5 (00 Downloads) |
Synopsis Groundwater Quality by : Harriet Nash
Groundwater quality monitoring and testing is of paramount importance both in the developed and developing world. This book presents a series of papers illustrating the varied nature of current research into groundwater quality. Urban and rural supplies are covered through a case history approach, and the importance of remedial action to prevent deterioration is emphasized.
Author |
: |
Publisher |
: |
Total Pages |
: 104 |
Release |
: 2001 |
ISBN-10 |
: UOM:39015053755321 |
ISBN-13 |
: |
Rating |
: 4/5 (21 Downloads) |
Synopsis Methods of Analysis by the U.S. Geological Survey National Water Quality Laboratory by :
Author |
: Charles J Patton |
Publisher |
: CreateSpace |
Total Pages |
: 44 |
Release |
: 2014-06-16 |
ISBN-10 |
: 150022331X |
ISBN-13 |
: 9781500223311 |
Rating |
: 4/5 (1X Downloads) |
Synopsis Colorimetric Determination of Nitrate Plus Nitrite in Water by Enzymatic Reduction, Automated Discrete Analyzer Methods by : Charles J Patton
This report documents work at the U.S. Geological Sur- vey (USGS) National Water Quality Laboratory (NWQL) to validate enzymatic reduction, colorimetric determinative meth- ods for nitrate + nitrite in filtered water by automated discrete analysis. In these standard- and low-level methods (USGS I-2547-11 and I-2548-11), nitrate is reduced to nitrite with nontoxic, soluble nitrate reductase rather than toxic, granular, copperized cadmium used in the longstanding USGS auto- mated continuous-flow analyzer methods I-2545-90 (NWQL laboratory code 1975) and I-2546-91 (NWQL laboratory code 1979). Colorimetric reagents used to determine resulting nitrite in aforementioned enzymatic- and cadmium-reduction meth- ods are identical. The enzyme used in these discrete analyzer methods, designated AtNaR2 by its manufacturer, is produced by recombinant expression of the nitrate reductase gene from wall cress (Arabidopsis thaliana) in the yeast Pichia pastoris. Unlike other commercially available nitrate reductases we evaluated, AtNaR2 maintains high activity at 37°C and is not inhibited by high-phenolic-content humic acids at reaction temperatures in the range of 20°C to 37°C. These previously unrecognized AtNaR2 characteristics are essential for success- ful performance of discrete analyzer nitrate + nitrite assays (henceforth, DA-AtNaR2) described here.