Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Richard A Niemann"'
Publikováno v:
EDULEARN Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9de479b4087fcd07f15b1eea6d6a9d9
https://doi.org/10.21125/edulearn.2018.1667
https://doi.org/10.21125/edulearn.2018.1667
Publikováno v:
Chlorinated Dioxins and Dibenzofurans in Perspective ISBN: 9781351070645
Chlorinated Dioxins and Dibenzofurans in Perspective
Chlorinated Dioxins and Dibenzofurans in Perspective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e67aff5be544480c70487d2d52114096
https://doi.org/10.1201/9781351070645-24
https://doi.org/10.1201/9781351070645-24
Autor:
Richard A. Niemann, David L Anderson
Publikováno v:
Journal of Chromatography A. 1200:193-197
Thiocyanate ranks after perchlorate as a potent inhibitor of iodide uptake by the thyroid but may be more concentrated in some food items such as milk products as to supersede perchlorate as the goitrogen of concern. A column-switching anion-exchange
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f89e1e17e49b5debc0a6316bdc1f296
https://doi.org/10.1016/j.chroma.2008.05.064
https://doi.org/10.1016/j.chroma.2008.05.064
Publikováno v:
Journal of Agricultural and Food Chemistry. 54:285-291
We report a simplified analytical procedure for determination of ephedrine alkaloids and synephrine in dietary supplements. Cleanup by simple filtration, when combined with tandem mass spectrometry (MS/MS) detection, provided results comparable to ou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e649f8d2f56d011a11a186a8f060d6c
https://doi.org/10.1021/jf051735w
https://doi.org/10.1021/jf051735w
Publikováno v:
Analytical Chemistry. 76:5518-5522
A rapid, sensitive, and specific method was developed for determining perchlorate anion in lettuce, cantaloupe, bottled water, and milk. A test portion of chopped crop homogenate was extracted with diluted nitric acid and filtered. Milk proteins were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df89dd525a4acbae6c15d4ce07b5607a
https://doi.org/10.1021/ac049281+
https://doi.org/10.1021/ac049281+
Autor:
Richard A Niemann
Publikováno v:
Journal of AOAC INTERNATIONAL. 76:1362-1368
A strong cation exchange (SCX) liquid chromatographic (LC) method is described for determination of formetanate hydrochloride residue in pome, citrus, and stone fruits. A test portion of fruit, homogenized with the peel left on, was blended with acid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2e3740e1b9e1e387945ebdfd94131c1
https://doi.org/10.1093/jaoac/76.6.1362
https://doi.org/10.1093/jaoac/76.6.1362
Publikováno v:
Journal of agricultural and food chemistry. 54(4)
Systemic uptake of perchlorate anion, a rocket fuel component and potential thyroid function disruptor, by leafy vegetables and other crops grown in contaminated waters is a public health concern. A column-switching anion-exchange chromatographic met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::550848ba10766fee24e96264e447c2ee
https://pubmed.ncbi.nlm.nih.gov/16478228
https://pubmed.ncbi.nlm.nih.gov/16478228
Publikováno v:
Analytica chimica acta. 567(1)
A rapid, sensitive, and specific method was developed for the determination of perchlorate anion in foods. The foods included high moisture fruits and vegetables, low moisture foods (e.g. wheat flour and corn meal), and infant foods. Improvements to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27b707698d3f34487a7fd091a066eabe
https://pubmed.ncbi.nlm.nih.gov/17723384
https://pubmed.ncbi.nlm.nih.gov/17723384
Autor:
Richard A. Niemann, Martha L. Gay
Publikováno v:
Journal of agricultural and food chemistry. 51(19)
An HPLC method with on-line cleanup coupled to the separation column is described for determination of (-)-norephedrine, (+)-norpseudoephedrine, (-)-ephedrine, (+)-pseudoephedrine, (-)-N-methylephedrine, (+)-N-methylpseudoephedrine, and (+/-)-synephr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5627dd62de26b2cd111794786ec5570c
https://pubmed.ncbi.nlm.nih.gov/12952412
https://pubmed.ncbi.nlm.nih.gov/12952412