Výsledky vyhledávání - "Patricia A. Creed"

An evaluation of M

Autor: Skyler W, Smith, Roy W, Martin, Nicole, Hanks, Patricia A, Creed, Kasey, Kovalcik, Robert A, Wilson, Kevin, Kubachka, Judith A, Brisbin, Julio A Landero, Figueroa, John T, Creed

Publikováno v: J Anal At Spectrom

Three [Formula: see text] mass oriented rare earth element (REE) M(2+) correction approaches (fixed factor, a dual internal standard, and an in-sample) are evaluated for use in an ICP-MS environmental method update. The multi-variant-based evaluation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::54b515a0714bf15ef628f2cec76beccd
https://pubmed.ncbi.nlm.nih.gov/35903413

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An evaluation of M2+ interference correction approaches associated with As and Se in ICP-MS using a multi-day dataset along with ICP-MS/MS/HR-ICP-MS based analysis and hierarchical modeling as a means of assessing bias in fortified drinking waters and single component matrices

Autor: Skyler W. Smith, Roy W. Martin, Nicole Hanks, Patricia A. Creed, Kasey Kovalcik, Robert A. Wilson, Kevin Kubachka, Judith A. Brisbin, Julio A. Landero Figueroa, John T. Creed

Publikováno v: Journal of Analytical Atomic Spectrometry. 37:898-909

M2+ internal standard ions mimic the drift of other M2+ ions better than M1+. ICP-MS/MS and HR-ICP-MS are used to assess the bias of various M2+ corrections while a Bayesian hierarchical model is used to estimate day to day impacts on the correction.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::515fb990b96cf21e05a75d868d9cecfc
https://doi.org/10.1039/d1ja00407g

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Analytical considerations associated with implementing M2+ correction factors to address false positives on As and Se within U.S. EPA method 200.8

Autor: Judith A. Brisbin, John T. Creed, Julio A. Landero Figueroa, Skyler W. Smith, Kasey Kovalcik, Patricia A. Creed, Kevin M. Kubachka, Nicole Hanks, Robert A. Wilson

Publikováno v: Journal of Analytical Atomic Spectrometry. 34:2094-2104

Rare earth elements (REE) can produce M2+ ions in ICP-MS and 150Nd2+, 150Sm2+, and 156Gd2+ can produce false positives on 75As and 78Se. Alternative instrumental tuning conditions, that utilize lower He flows within the collision cell, reduce these f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::907cf7658510fa683dbc85602174cfef
https://doi.org/10.1039/c9ja00086k

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Analytical considerations associated with implementing M

Autor: Skyler W, Smith, Nicole, Hanks, Patricia A, Creed, Kasey, Kovalcik, Robert A, Wilson, Kevin, Kubachka, Judith A, Brisbin, Julio Landero, Figueroa, John T, Creed

Publikováno v: J Anal At Spectrom

Rare earth elements (REE) can produce M(2+) ions in ICP-MS and (150)Nd(2+), (150)Sm(2+), and (156)Gd(2+) can produce false positives on (75)As and (78)Se. Alternative instrumental tuning conditions, that utilize lower He flows within the collision ce

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::029013ba967ae7a0a23a7bd51f8ac18a
https://pubmed.ncbi.nlm.nih.gov/32280153

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Arsenic Speciation and Identification of Monomethylarsonous Acid and Monomethylthioarsonic Acid in a Complex Matrix

Autor: Santha K. V. Yathavakilla, Michael William Fricke, Douglas T. Heitkemper, Carol Schwegel, Patricia A Creed, Nohora V Shockey, John T. Creed, Joseph A. Caruso

Publikováno v: Analytical Chemistry. 80:775-782

Anion-exchange chromatography was utilized for speciation of arsenite (As(III)), arsenate (As(V)), dimethylarsinic acid (DMA(V)), monomethylarsonic acid (MMA(V)), monomethylarsonous acid (MMA(III)), and the new As species monomethylthioarsonic acid (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98bf461a0b6cd1a15e087e493c2f5c1b
https://doi.org/10.1021/ac0714462

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Complementary molecular and elemental detection of speciated thioarsenicals using ESI-MS in combination with a xenon-based collision-cell ICP-MS with application to fortified NIST freeze-dried urine

Autor: John T. Creed, Patricia A. Creed, Christina M. Gallawa, Jenny L. Ellis, Joseph A. Caruso, Kevin M. Kubachka, Andrea R. Young, Sean D. Conklin

Publikováno v: Analytical and Bioanalytical Chemistry. 390:1731-1737

The simultaneous detection of arsenic and sulfur in thioarsenicals was achieved using xenon-based collision-cell inductively coupled plasma (ICP) mass spectrometry (MS) in combination with high-performance liquid chromatography. In an attempt to mini

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ba4aeb2c73a2647ed377399ea493b96
https://doi.org/10.1007/s00216-007-1767-0

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Estimating Inorganic Arsenic Exposure from U.S. Rice and Total Water Intakes

Autor: Nohora Shockey, Glenn Rice, Larry Wymer, Jianping Xue, Madhavi Mantha, John T. Creed, Kevin M. Kubachka, Traci Hanley, Patricia A. Creed, Douglas T. Heitkemper, Edward Yeary, Joseph A. Caruso, John Trent

Publikováno v: Environmental Health Perspectives

Among nonoccupationally exposed U.S. residents, drinking water and diet are considered primary exposure pathways for inorganic arsenic (iAs). In drinking water, iAs is the primary form of arsenic (As), while dietary As speciation techniques are used

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce4ca8c3ae3fcf93d5263dd3898a5f3e
https://pubmed.ncbi.nlm.nih.gov/28728137

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Comparison of a Chemical and Enzymatic Extraction of Arsenic from Rice and an Assessment of the Arsenic Absorption from Contaminated Water by Cooked Rice

Autor: Amanda H. Ackerman, Patricia A. Creed, Nohora P. Vela, Michael W. Fricke, John T. Creed, Douglas T. Heitkemper, Carol A. Schwegel, Amy N. Parks

Publikováno v: Environmental Science & Technology. 39:5241-5246

Rice is a target food for arsenic speciation based analyses because of its relatively high arsenic concentration and per capita consumption rates. Improved speciation data for rice can be helpful in estimating inorganic arsenic exposures in the U.S.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35fa3fe4bd3b721ba3246f4b9ea0b8fe
https://doi.org/10.1021/es048150n

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Speciation and preservation of Cr VI and Cr III in finished drinking water matrixes using collision cell ion chromatography-inductively coupled plasma-mass spectrometry

Autor: Larry Wymer, Tatyana S. Pinyayev, Robert A Wilson, Patricia A. Creed, John T. Creed

Publikováno v: Journal of AOAC International. 97(3)

The polyatomic background at the major isotope of Cr was evaluated as a function of collision cell gas flow rate using three different mobile phases. The stability of CrVI was evaluated as a function of solution pH by fortifying samples with enriched

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24abffece733d2a88b431164914b322d
https://pubmed.ncbi.nlm.nih.gov/25051650

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An in vitro assessment of bioaccessibility of arsenicals in rice and the use of this estimate within a probabilistic exposure model

Autor: Jianping Xue, Carol A. Schwegel, David J. Thomas, John T. Creed, Andrea R. Young, Heather R Trenary, Michael J. Kohan, Patricia A. Creed, Joseph A. Caruso, Madhavi Mantha, Karen Herbin-Davis

Publikováno v: Journal of exposure scienceenvironmental epidemiology. 22(4)

In this study, an in vitro synthetic gastrointestinal extraction protocol was used to estimate bioaccessibility of different arsenicals present in 17 rice samples of various grain types that were collected across the United States. The across matrix

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b75954a937200c44b12165d5cc8fbba
https://pubmed.ncbi.nlm.nih.gov/22549721

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