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Detection Limit
Detection Limit: - The lowest concentration of a chemical that can reliably be distinguished from a zero concentration. [Environmental Protection Agency] News archive for Detection Limit:: |
WebWire (press release),Advisory Committee, is intended to replace the current method detection limit (MDL) procedure found in Title 40 of the Code of Federal Regulations.
Fourth Quarter Activities and Cash Flow Reports - Jul 30, 2008
Sydney Morning Herald,Gold was determined following an aqua regia digest by solvent extraction and graphite furnace AAS (detection limit 1ppb), and checked by fire assay (10ppb).
Dicing with ricin - Jul 31, 2008
spectroscopyNOW.com (subscription),Under these conditions, a detection limit of 50 ng/mL was obtained in buffer solution spiked with ricin. This is higher than existing immunoassay or
Volatile content of lunar volcanic glasses and the presence of ... - Jul 10, 2008
Nature.com (subscription),Essentially all volcanic glasses have carbon content (reported as CO 2 ) within 2 (standard deviation) of the detection limit, with concentrations of 6 7
Testing method helping to curb Staunton River contamination - Jul 29, 2008
Lynchburg News and Advance,...“One of the reasons that we’ve identified some of these new sources or found the source was we got a much lower detection limit.� Water test results from
Detecting mercurial proteins - Jul 11, 2008
Chemistry World,The way to lower the detection limit and make low abundance proteins 'visible' using ICP-MS is to label them with tags containing heavier and less common
Ashburton Successful Auger Geochemistry - Jul 28, 2008
Sydney Morning Herald,96 272 Mean all samples 5.63 34 36 Detection Limit 1ppb 2 ppm 1 ppm (Note: 10000ppm = 1% and 1000ppb = 1ppm) The soil samples in this latest survey were
Unstable additive in health care products - Jul 6, 2008
separationsNOW.com (subscription),The detection limit was 651 ng/mL and the recoveries were again quantitative. For two emollient creams, the HPLC contents were 0.015% and 0.0027%,
I-Star Announces Results From Recent Exploration Activities - Jul 24, 2008
MarketWatchThe molybdenum values from rock and soil samples range from nine samples below detection limit of 1 ppm Mo to 906 ppm Mo. Anomalous silver, lead and arsenic
Expression profiles of the pluripotency marker gene POU5F1 and ... - Jul 28, 2008
7thSpace Interactive (press release),Initial analysis identified three genes (Ubc, Tbp, and B2m) close to the detection limit with irregular expression between the different stages.
Syringe effect improves extraction - Jul 27, 2008
separationsNOW.com (subscription),The calibration curve was linear over 10-1000 ng/mL for clenbuterol and the detection limit was 4.9 ng/mL. The procedure was tested with water samples
Jasper Mining Corporation continues to announce high grade ... - Jul 11, 2008
FOXBusiness2 - Results from bottom portions of holes previously reported 3 - Initial results exceed upper detection limit of 2000 ppm, results of Group 7KP re-analysis
What do analytical chemicals do? - Jul 18, 2008
innovations report,...precision, selectivity, detection limit, and quantification, have been used to successfully evaluate asymmetric epoxidation processes of allyl alcohols,
Rio Cristal Zinc Intercepts 15 Meters of 29.5% Zinc - Jul 22, 2008
Market Wire (press release)Samples grading above maximal 10% Zn detection limit of ME-ICP41 method are assayed using AAS method (Atomic absorption, commercial code AA-46).
Vegetable wash evaluated - Jul 11, 2008
Capital Press (subscription),WSU research technologist Peter Gray agreed, noting the bacteria were knocked down below the detection limit almost instantaneously in the study.
Mozambican mine returns under assessment - Jul 10, 2008
Creamer Media's Mining Weekly,Soil geochemistry work has delineated five regional targets, with an anomalous detection limit of 75 parts per billion. He pointed out that the geochemistry
New trace ammonia PPB gas analyser - Jul 9, 2008
Processing Talk,With a response time of 5 seconds and a lower detection limit of 0.1ppb the Orion 3100 system provides a fast and ultra sensitive method to detect ammonia
Talon Metals reports final results from Phase II drill program at ... - Jul 7, 2008
Trading Markets (press release),Gold is determined by fire assay/atomic absorption with a detection limit of 5ppb Au using 50 gram aliquots. Lead fire assays use silver as a co-collector
Nanotechnology candy to thwart bioterrorism and food contamination - 02 Dec 2007
Nanowerk LLC,We will work on enhancement of detection limit and specificity. Besides pathogens, we also plan to examine the possibility of detecting cancer cells using
New skin whitener test - 02 Dec 2007
separationsNOW.com (subscription),Recoveries from real products were 99-102% and the detection limit was 3 µg/L. The linear calibration range was set to 20-100 µg/L. Method precision was
Full Text - Nov 22, 2007
Science Magazine (subscription)...left in the image-potential band (20%), whereas the asymmetry between positive and negative values of k || has vanished below the detection limit. Fig.
9News Special Report: Are You Taking A Gamble With Your Health? - Nov 18, 2007
WCPO,What's more, over half maxed-out the swab's detection limit at 10% lead – that's more than 160-times the amount of lead the EPA legally allows in paint.
'Our core competency is people' - Nov 28, 2007
Express Pharma,And as users' demand for stringent quality goes up or the detection limit becomes stringent, the product quality becomes important.
Mass spectrometry weighs in for genotyping applications - Nov 6, 2007
LabTechnologist.com,While the researchers did not quote a lower detection limit for the technique, the ease of cleavage of the labels would suggest it is comparable to other
WTM Reports Highest Grade, Widest Intercepts to Date from La Dura ... - Nov 28, 2007
Market Wire (press release)The zinc grade for hole LC07-15 is preliminary in nature as six samples, ranging from 0.30 to 0.60 metres in width, exceeded the maximum detection limit for
Low iron stores: a risk factor for excessive hair loss in non ... - Nov 14, 2007
John Libbey Eurotext,The detection limit of the serum ferritin assay caused some departure from normality even for log-transformed data. Therefore analyses based on ranks have
Cardero Initiates Geophysical Study at Former High-Grade Incahuasi ... - Nov 19, 2007
CNNMoney.comAn additional nine trenches along strike and to the north of the mine returned geochemically anomalous values ranging from below detection limit to 5.22 g/t
Commander Resources Ltd.: Durette Drilling Returns High Grade ... - Nov 26, 2007
Market Wire (press release)The homogenized sample is analyzed by FA/Gravimetric using a charge with a detection limit of 0.03 gram per tonne gold. As part of in-house QA/QC TSL
Lululemon supplier navigates rocky shoals - Nov 16, 2007
Globe and Mail,..."There is always a detection limit," she said. The reaction to Lululemon's plight was mixed in other parts of the fashion world. Michael Budman, co-owner of
Occupational Health and Safety Report Provides Ready to Use ... - Nov 26, 2007
Business Wire (press release),This includes data on precision, accuracy, and detection limit, calibration procedures as well as potential sources of systematic errors.
Multi-channel high purity - Nov 25, 2007
Processing Talk,With a detection limit of 0.01ppb and a range of 0-10000ppb,this on-line process analyser is ideally designed for monitoring sodium in de-mineralised water,
Aurizon Reports Rare Earth and Uranium Discoveries at Kipawa Gold ... - Nov 8, 2007
CNNMoney.comThe best uranium assays are associated with thorium values which are above the laboratory's detection limit and will be reanalyzed.
Catalyst refutes pollution claims - Nov 22, 2007
Powell River Peak,...collected from either the mill filterhouse, or Powell Lake upstream of the Wildwood landfill, are 1) at or near the detection limit of the laboratory,
New York Environmental Firm Dispels Rumors About the Safety Of ... - Nov 20, 2007
Primenewswire (press release),All sixteen pahs analyzed were found to be below the laboratory minimum detection limit. These results put any potential health concerns regarding
Kettle River Receives Minnie Moore Preliminary Trench Assays - Nov 20, 2007
Market Wire (press release)Subsequent fire assay is being done on samples returning greater than 1 g/t gold and those exceeding the ICP detection limit of 100 g/t for silver.
NASA Hubble Space Telescope Daily Report: # 4490 - Nov 16, 2007
Space Ref (press release)It is not detected by the GOODS-N HST ACS imaging and is just above the detection limit of the ultradeep Spitzer imaging at 3.6-24 um.
Full Text - Nov 7, 2007
Science Magazine (subscription)The 1.28-ppm biomarker was detected in escs, spcs, and opcs at significantly lower levels than in the npcs and was near or below the detection limit in the
Noront Resources Ltd.: Further Deep Gold Mineralization ... - Nov 5, 2007
Web Services Journal,The initial gold assay method comprises a 30-gram fire assay charge with an atomic-absorption finish for which the upper detection limit of this method is
Kinesys at the Acusticum - Nov 5, 2007
etnow.com (press release),The Kinesys controllers also monitor a collision detection limit switch system that is fitted to the ceiling panels. This prevents the moving ceiling pieces
IGC Resources' Drilling Success Finds New Gold Mineralisation at ... - Nov 14, 2007
Trading Markets (press release),Assaying was to 0.01ppm detection limit using a single stage mix and grind and subsequent Flame Atomic Absorption Spectrometry after extraction of analyte
Hard disc makers demand more from cleaning - 24 Aug 2007
Manufacturing Talk,Levels for both organics and ionics now approach the detection limit for head space and ion chromatographic equipment. Now future developments could be
Western Copper Corporation: New Copper Zone Discovered at Carmacks ... - Aug 21, 2007
Web Services Journal,Additional assaying for total copper is run using a 4 acid digestion - AAS method to a 0.01% detection limit. Non-sulfide copper assays are run using a
Full Text - Aug 23, 2007
Science Magazine (subscription)Except for some small forward scattering in the theoretical simulations, which lies below the detection limit in our experiments, the overall agreement in
Fast, Sensitive Analysis Of Volatile Organics By EPA Method 8260 - Aug 8, 2007
Water Online (press release),At the same time, many programs (groundwater monitoring, for example) have very low detection limit requirements that approach drinking water standards.
TOP THREE LINKS YOU MUST CLICK ON - Aug 13, 2007
Web Services Journal,The samples that were above the upper detection limit for Cu, Pb and Zn (1%) for the technique were reanalyzed by dissolving in Aqua Regia again using a
Noront Resources Ltd.: Windfall Lake Drilling Activity and Update - Aug 20, 2007
Market Wire (press release)The upper detection limit of this method is 10 ppm. Samples reporting greater than 2 g/t gold are reassayed in duplicate using aliquots of the original pulp
Tests Show Kona Kampachi(R) Contains No Detectable Mercury - Aug 10, 2007
Genetic Engineering News (press release),...an independent international seafood quality testing firm, Kona Kampachi(R) does not contain mercury to the .02 mg/kg detection limit, which is 50 times
SearchGold - significant gold anomaly in soil at Moyabi, Gabon - Aug 15, 2007
Mineweb,The analysis is executed on 30 g aliquots and a 2 ppb detection limit is achieved. A rigorous QA/QC program established by the laboratory involves the
Analytical Results Highlight Efficacy of AnaSpec MOG Peptides - Jul 28, 2007
PR.com (press release),The detection limit was measured to be as low as 50 pg of anti-MOG (35-55) autoantibody in serum or cerebrospinal fluid. After testing different lots of
Northern Peru to Drill New Silver-Gold-Zinc Prospect at Galeno - Aug 7, 2007
Market Wire (press release)The samples averaged 66ppm silver, 194ppb gold, 0.33% zinc, including results below the detection limit for these elements. Due to poor exposure any true
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