Navigation Links
Speciation of Arsenic by LC-ICP-MS

ical DL values that can be routinely achieved outside a clean-room in a clean laboratory.

Although previous experiments have reported signal improvements when 13% methanol is aded to the mobile phase4, this application note demonstrates that the Varian ICP-MS can produce low detection limits without this step. The addition of methanol can also cause problems if other elements such as Cr (VI) are measured, as the formation of 40Ar13C leads to substantial degradation of the signal-to-noise ratio, and higher limits of detection. Additions above 1% methanol can also cause problems, as the chromatographic separation between AsB and As(III) may be degraded to such an extent that base line resolution is not achievable.

Analysis of reference materials

Given the lack of reference materials that are certifi ed for all fi ve arsenic species, a number of reference materials were spiked with known quantities of each species and the % recovery recorded, to test for robustness of the Gradient method.

The reference materials analyzed included two water reference materials, NIST 1640 and HPS TMDW, two biological tissue reference materials, HPS OT and HPS TMF, and a urine reference material. Each reference material was spiked with 11 μg/L of each As compound and analyzed. The HPS TMF and the Seronorm urine reference material were diluted by a factor of 100 prior to injection. The percentage spike recoveries for each reference material can be viewed in Table 5. Very good recoveries were achieved, especially considering that no internal standard was used.

Conclusions

This work has demonstrated that the Varian ICP-MS is an excellent detector when coupled with liquid chromatography for elemental speciation. Low ng/L detection limits can be routinely obtained and very good recoveries were obtained on a variety of spiked referenc
'"/>

Source:


Page: All 1 2 3 4 5

Related biology technology :

1. A Positive Selection Assay for Mutation Analysis in Big Blue Animals
2. Epitope-Tagging Vectors for Functional Analysis in Yeast
3. Map and Link Human Genetic Disorders with SSLP Analysis
4. CastAway Precast Gels for Rapid Automated DNA Sequence Analysis
5. Single-cell RT-PCR Analysis of Paramecium Primaurelia with the Eppendorf cMaster RTplusPCR System
6. Structural Analysis of Glycosylated Peptides in Complex Mixtures with Ion Trap MSn
7. Use of Transcriptor Reverse Transcriptase in Microarray Analysis
8. Increased Sensitivity in Microarray Analysis
9. Gene-Expression Analysis of TP, DPD, and TS Using the LightCycler mRNA Quantification KitsPLUS
10. Agilent 2100 Bioanalyzer Automated Analysis System
11. Analysis of Microarray Data
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Speciation Arsenic ICP

(Date:7/11/2014)... 11, 2014 BCC Research ( http://www.bccresearch.com ... POLYMERASE CHAIN REACTION (PCR) TECHNOLOGY: GLOBAL MARKETS , the ... reached nearly $140 billion in 2013. This is estimated ... five-year compound annual growth rate (CAGR) of 28.6%. , ... interesting and exciting possibilities within the broader PCR field. ...
(Date:7/11/2014)...  Researchers have pioneered a revolutionary new way ... called Virtual Finger, allows scientists to move through ... synapses using the flat surface of their computer ... studies orders of magnitude more efficient, saving time, ... many areas of experimental biology. The software and ...
(Date:7/10/2014)... July 10, 2014 Product and ... very low abundance and are often “lost in ... time-consuming. , Join presenters Dr. Rowel Tobias, Senior ... John Anders, Head of Quality at Nanotherapeutics, Inc., ... that can speed detection and quantitation while achieving ...
(Date:7/10/2014)... July 10, 2014 Terascala, the industry ... that Alan Swahn, a former vice president of product ... as vice president of marketing. Terascala’s software when combined ... NetApp create the highest performance and most reliable solutions ... to guide Terascala’s channel expansion and broaden its product ...
Breaking Biology Technology:Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 2Global Market for Digital Polymerase Chain Reaction Technology to Reach $490 Billion by 2018; Equipment Sector Accounts for the Fastest Growing Segment With 33% CAGR 3Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 2Virtual Finger Enables Scientists To Navigate And Analyze 3D Images Of Complex Biological Structures 3Novel Ms Techniques Speed Detection of Biopharmaceutical Product and Process Impurities, New Webinar Hosted by Xtalks 2Terascala Expands Executive Team 2Terascala Expands Executive Team 3
... Wisconsin , , Editors Note: The Wisconsin ... NorthStar Economics 60-page report titled, the NorthStar Guide to ... primer for Wisconsin companies seeking information about risk capital available ... to excerpt their report in four-installments on WTN over the ...
... WI Futurist William Gibson is often quoted ... evenly distributed yet. Many speakers at the first annual ... to make a point about the current state of healthcare ... of Wisconsin (MCW) . , ,Featured presenters at the conference ...
... Toni Sikes of Guild.com , , WTN: What's the ... Sikes: In my opinion, it will be the continuous ... technology and e-commerce companies lies in better connecting customers with ... and technology communities must improve every element that surrounds our ...
Cached Biology Technology:Community Development Venture Capital 2Community Development Venture Capital 3Community Development Venture Capital 4Community Development Venture Capital 5Community Development Venture Capital 6Networking of Healthcare Information 2The Next Big Thing in E-Commerce - Guild.com CEO comments on Wisconsin's technology vision 2
(Date:7/11/2014)... Canyon fire started near the City of Entiat on ... resources, the fire quickly grew to over 1,000 acres ... the fire is under investigation by the Washington Department ... with existing local resources in developing fire control strategies ... (USFS), Washington State Department of Natural Resources, (WA DNR), ...
(Date:7/11/2014)... Institute of Standards and Technology (NIST) need a ... they often prove that necessity is truly the ... for M. Lorna De Leoz and Stephen Stein, ... glycomics. Glycomics is the study of the abundant, ... to proteins and lipids and influence cellular processes, ...
(Date:7/11/2014)... two different ways that allow unprecedented experimental insights ... of oxygen molecules in photosynthesis. The two studies ... Nature Communications . , "The new knowledge will ... oxidation, which are key components for building artificial ... energy in fuels like hydrogen, ethanol or methanol," ...
Breaking Biology News(10 mins):Molecular snapshots of oxygen formation in photosynthesis 2
... Assistant Professor Frank J. Slack at Yale University has identified ... lung cancer, presenting new possibilities for diagnosis and treatment. The ... and Developmental Cell. , The oncogene Ras is out of ... over-expressed or activated by mutation. According to Slack, a member ...
... at the Marine Biological,Laboratory (MBL) has published ... that supports her hypothesis that, when combined, ... as BCE--can act synergistically to alter a ... have previously studied the effects,of these pollutants ...
... a longtime University of Chicago collaborator, Goldstein conducted an experiment ... these skinny, graceful fish can swim from salt water to ... prompt an equally drastic physiological change: Our cells would take ... and rapidly causing death. So how do skates do it? ...
Cached Biology News:Yale Scientists Find MicroRNA Regulates Ras Cancer Gene 2Clam embryo study shows pollutant mixture adversely affects nerve cell development 2Clam embryo study shows pollutant mixture adversely affects nerve cell development 3Sea skate experiment sheds light on human cell transport 2
Mouse monoclonal [M7-PB-E9] to pan alpha Sodium Potassium ATPase ( Abpromise for all tested applications)....
Transcription factor Sp2. [Source:Uniprot/SWISSPROT;Acc:Q02086] Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
... Rabbit monoclonal [EP282Y] to Asparagine ... all tested applications). ... corresponding to residues in the ... Entrez GeneID: ...
Rabbit Anti-melatonin (different linkage) Polyclonal Antibody...
Biology Products: