We thank Fermentek for the information,
the free Nonactin granted for our project,
and most of all, the moral support |
Link friends <![CDATA[<ol><li><p align="left"><a href="http://17dmag.imess.net">17dmag </a></li><li><p align="left"><a href="http://7aad.yoll.net">7aad </a></li><li><p align="left"><a href="http://actinomycin.imess.net">actinomycin </a></li><li><p align="left"><a href="http://aflatoxin-b1.yoll.net">alfatoxin-b1 </a></li><li><p align="left"><a href="http://aflatoxin-b2.yoll.net">aflatoxin-b2 </a></li><li><p align="left"><a href="http://aflatoxin-g1.sinfree.net">aflatoxin-g1 </a></li><li><p align="left"><a href="http://aflatoxin-g2.hotusa.org">aflatoxin-g2 </a></li><li><p align="left"><a href="http://aflatoxin-m1.yoll.net">aflatoxin-m1 </a></li><li><p align="left"><a href="http://aflatoxin-m2.yoll.net">aflatoxin-m2</a></li><li><p align="left"><a href="http://anisomycin.sinfree.net">anisomycin </a></li><li><p align="left"><a href="http://ascomycin.my-age.net">ascomycin </a></li><li><p align="left"><a href="http://Blyukher.imess.net">Blukher</a></li><li><p align="left"><a href="http://Bukharin.imess.net">Bukharin</a></li><li><p align="left"><a href="http://dybenko.maclenet.com">dybenko</a></li><li><p align="left"><a href="http://frinovsky.imess.net">frinovsky </a></li><li><p align="left"><a href="http://geldanamycin.fateback.com">geldanamycin </a></li><li><p align="left"><a href="http://k252a.enacre.net">k252a </a></li><li><p align="left"><a href="http://k252b.bebto.com">k252b </a></li><li><p align="left"><a href="http://kt5720.deep-ice.com">kt5720 </a></li><li><p align="left"><a href="http://kt5823.undonet.com">kt5823</a></li><li><p align="left"><a href="http://leptomycin.bebto.com">leptomycin </a></li><li><p align="left"><a href="http://Link-Exchange.yoll.net">Link-Exchange</a></li><li><p align="left"><a href="http://mithramycin.noneto.com">mithramycin </a></li><li><p align="left"><a href="http://mitomycin.enacre.net">mitomycin </a></li><li><p align="left"><a href="http:// nonactin.yoll.net">nonactin</a></li><li><p align="left"><a href="http://Ochratoxin.fateback.com">Ochratoxin</a></li><li><p align="left"><a href="http://parthenolide.my-age.net">parthenolide </a></li><li><p align="left"><a href="http://snorring.deep-ice.com">Snorring</a></li><li><p align="left"><a href="http://staurosporine.hotusa.org">staurosporine </a></li><li><p align="left"><a href="http://tinnitus.hotusa.org">tinnitus </a></li><li><p align="left"><a href="http://trichostatin.sinfree.net">trichostatin </a></li><li><p align="left"><a href="http://tukhachevsky.fateback.com">tukhachevsky </a></li><li><p align="left"><a href="http://verruculogen.maclenet.com">verruculogen </a></li><li><p align="left"><a href="http://vomitoxin.fateback.com">vomitoxin </a></li><li><p align="left"><a href="http://wortmannin.yoll.net">wortmannin </a></li><li><p align="left"><a href="http://yakir.sinfree.net">yakir </a></li><li><p align="left"><a href="http://yegorov.sinfree.net">yegorov </a></li><li><p align="left"><a href="http://yezhov.sinfree.net">yezhov </a></li><li><p align="left"><a href="http://zearalenone.imess.net">zearalenone </a></li></ol><p align="left"><hr color="#008000" size="5" align="left"><p align="left">Here come some links to top-rated hrefs, such as Microsoft, wikipedia, Google and Yahoo :<a href="http://www.google.co.il/">google</a>, <a href="http://www.microsoft.com/en/us/default.aspx">microsoft</a>, <a href="http://www.yahoo.com/">yahoo</a>, <a href="http://en.wikipedia.org/wiki/Main_Page">wikipedia</a></p><hr color="#008000" size="5" align="left"><p align="left">Now come links to these of fermentek product pages, that are needy : .<a href="http://www.fermentek.co.il">the homepage of fermentek</a>, <a href="http://www.fermentek.co.il/FK506.htm">FK506 or tacrolimus</a>, <a href="http://www.fermentek.co.il/05-products.htm">products of Fermentek: staurosporine, K252A, aflatoxin</a>, <font face="Verdana" size="2"><a href="http://www.fermentek.co.il/rapamycin.htm">Sirolimus (Rapamycin)</a></font></p><p align="left">And other link beggars:</p><p align="left"><a href="http://Tinnitus.itgo.com">Tinnitus. about some guys that had tinnitus ]]> | 5: J Pharm Biomed Anal. 2003 Feb 5;31(1):11-8.
Determination of potassium ions in pharmaceutical samples by FIA using a potentiometric electrode based on ionophore nonactin occluded in EVA membrane.
Garcia CA, Junior LR, Neto Gde O.
Department of Chemistry, UFS, 49100-000, Sao Cristovao, SE, Brazil. cgarcia@sergipe.ufs.br
A simple and rapid method was developed for the K(+) ions determination employing a flow injection system using a flow-through electrode based on the naturally-occurring antibiotic ionophore nonactin occluded in a polymeric membrane. The nonactin ionophore was trapped in poly(ethylene-co-vinyl acetate) (EVA) matrix (40% w/w in vinyl acetate) and dispersed on the surface of a graphite-epoxy tubular electrode. The plasticizer-free all-solid-state potassium-selective electrode showed a linear response for K(+) concentrations between 5.0 x 10(-5) and 5.0x10(-2) M (r=0.9995) with a near-Nernstian slope of 51.5 mV per decade, when Tris-HCl buffer (pH 7.0;0,1 M) was employed as a carrier. The potentiometric-FIA system allows an analytical frequency of 120 samples per hour with a precision of 3.6%. The relative standard deviations (R.S.D.) for K(+) determination in pharmaceuticals samples, without any previous treatment, were lower than 4.0%, comparable to those obtained by flame photometry. Ammonium is the main analytical interference and the electrode response time was 5 s at 25 degrees C. The useful lifetime of the tubular sensor is longer than 3 months in continuous use.
PMID: 12560044 |
|
