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Showing 1 to 12 of 731 entries
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A solid-contact ion selective electrode for copper(II) using a succinimide derivative as ionophore.

Sensors (Basel, Switzerland)

Tutulea-Anastasiu MD, Wilson D, del Valle M, Schreiner CM, Cretescu I.
PMID: 23549362
Sensors (Basel). 2013 Apr 02;13(4):4367-77. doi: 10.3390/s130404367.

All-solid-state sensors with polyvinyl chloride (PVC)-based membranes using off-the-shelf N-hydroxysuccinimide (NHS) and succinimide (Succ) ionophores were prepared using DOP (dioctyl phthalate) and NPOE (ortho-nitrophenyloctyl ether) as plasticizers. Good responses were obtained when NHS was used. The potentiometric response of...

Highly selective dimerization and trimerization of isobutene to linearly linked products by using nickel catalysts.

Chemistry, an Asian journal

Behr A, Rentmeister N, Seidensticker T, Vosberg J, Peitz S, Maschmeyer D.
PMID: 25202770
Chem Asian J. 2014 Feb;9(2):596-601. doi: 10.1002/asia.201301263.

The unique linear linkage of isobutene to generate highly valuable C8 precursors for plasticizers is feasible by using special nickel catalysts. (4-Cyclooctene-1-yl)(1,1,1,5,5,5-hexafluoro-2,4-acetylacetonato)nickel and aluminum-alkyl-activated nickel acetylacetonates produce isobutene dimers with high selectivities of up to 95%. Moreover, selectivity for...

Blood Bag Plasticizers Influence Red Blood Cell Vesiculation Rate without Altering the Lipid Composition of the Vesicles.

Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie

Bicalho B, Serrano K, Dos Santos Pereira A, Devine DV, Acker JP.
PMID: 27022319
Transfus Med Hemother. 2016 Jan;43(1):19-26. doi: 10.1159/000441639. Epub 2015 Oct 29.

BACKGROUND: Polyvinyl chloride (PVC) plasticized with di(2-ethylhexyl) phthalate (DEHP) is commonly used for blood collection and storage. DEHP has protective effects on RBC membranes, but is also a toxin.METHODS: A paired study was conducted to investigate the influence of...

Extraction of Gold(III) from Hydrochloric Acid Solutions with a PVC-based Polymer Inclusion Membrane (PIM) Containing Cyphos(®) IL 104.

Membranes

Bonggotgetsakul YY, Cattrall RW, Kolev SD.
PMID: 26670259
Membranes (Basel). 2015 Dec 08;5(4):903-14. doi: 10.3390/membranes5040903.

Poly(vinyl chloride) (PVC) based polymer inclusion membranes (PIMs), with different concentrations of Cyphos® IL 104 as the membrane extractant/carrier, were studied for their ability to extract Au(III) from hydrochloric acid solutions. Some of the PIMs also contained one of...

Polymeric plasticizer extends the lifetime of PVC-membrane ion-selective electrodes.

The Analyst

Zahran EM, New A, Gavalas V, Bachas LG.
PMID: 24352534
Analyst. 2014 Feb 21;139(4):757-63. doi: 10.1039/c3an01963b. Epub 2013 Dec 18.

The nature of the plasticizer plays a pivotal role in the analytical performance of polymer membrane ion sensors. Conventional plasticizers suffer leaching or migration from the membrane and exudation, both of which could limit the lifetime of sensors based...

Miscibility and dynamical properties of cellulose acetate/plasticizer systems.

Carbohydrate polymers

Bao CY, Long DR, Vergelati C.
PMID: 25458277
Carbohydr Polym. 2015 Feb 13;116:95-102. doi: 10.1016/j.carbpol.2014.07.078. Epub 2014 Aug 20.

Due to its biodegradability and renewability, a great interest has been devoted to investigating cellulose acetate in order to expand its potential applications. In addition, secondary cellulose acetate (CDA) could also be considered as a model system for strongly...

A Scientific Evaluation of Health Effects of Two Plasticizers Used in Medical Devices and Toys: A Report from the American Council on Science and Health.

MedGenMed : Medscape general medicine

Koop CE, Juberg DR, Benedek EP, Brecher RW, Brent RL, Cole P, Corn M, Covello V, Downes TW, Gad SC, Gold LS, Guengerich FP, Higginson J, Konemann WH, Lamb IV, Lioy PJ, Lundberg GD, Thompson KM.
PMID: 11104416
MedGenMed. 1999 Jun 22;E14.

No abstract available.

Spectroscopic method for the determination of the ionic site concentration in solvent polymeric membranes and membrane plasticizers.

Analytical chemistry

Gyurcsányi RE, Lindner E.
PMID: 12199575
Anal Chem. 2002 Aug 15;74(16):4060-8. doi: 10.1021/ac020120k.

The built-in site density of either fixed sites or mobile hydrophobic ion sites determines whether a membrane is permselective for cations or anions of the sample. The molar ratio of the ionophore to the intrinsic or added ionic sites...

Global transport of organic pollutants: ambient concentrations in the remote marine atmosphere.

Science (New York, N.Y.)

Atlas E, Giam CS.
PMID: 17757266
Science. 1981 Jan 09;211(4478):163-5. doi: 10.1126/science.211.4478.163.

Concentrations of organic pollutants in the air and in precipitation have been measured at Enewetak Atoll in the North Pacific Ocean. These data from a site removed from industrial and human activity indicate the present concentrations of synthetic organic...

Copper(II) selective electrochemical sensor based on Schiff Base complexes.

Talanta

Singh LP, Bhatnagar JM.
PMID: 18969605
Talanta. 2004 Oct 08;64(2):313-9. doi: 10.1016/j.talanta.2004.02.020.

Plasticized membranes using Schiff Base complexes, derived from 2,3-diaminopyridine and o-vanilin have been prepared and explored as Cu(2+)-selective sensors. Effect of various plasticizers viz., dibutyl phthalate (DBP), dioctylphthalate (DOP), chloronaphthalene (CN), tri-n-butylphosphate (TBP) etc. and anion excluder, sodium tetraphenylborate...

The role of peroxisome proliferator-activated receptors in the development and physiology of gametes and preimplantation embryos.

PPAR research

Huang JC.
PMID: 18354728
PPAR Res. 2008;2008:732303. doi: 10.1155/2008/732303.

In several species, a family of nuclear receptors, the peroxisome proliferator-activated receptors (PPARs) composed of three isotypes, is expressed in somatic cells and germ cells of the ovary as well as the testis. Invalidation of these receptors in mice...

Use of self-plasticizing EVA membrane for potentiometric anion detection.

Talanta

Torres KY, Garcia CA, Fernandes JC, de Oliveira Neto G, Kubota LT.
PMID: 18968170
Talanta. 2001 Jan 05;53(4):807-14. doi: 10.1016/s0039-9140(00)00571-3.

In this work, five different types of membranes were developed responsible to anion-selective electrodes. The membranes were based on tri-caprylyl-trimethyl-ammonium chloride (Aliquat-336S) supported on poly(ethylene-co-vinyl-acetate) copolymer (EVA). The sensors were prepared by solubilizing the copolymer with the appropriate exchanger...

Showing 1 to 12 of 731 entries