A glassy carbon electrode modified with hollow cubic cuprous oxide for voltammetric sensing of L-cysteine.

This paper reports on an electrochemical sensing system for L-cysteine. It is based on the use of hollow cubic CuO particles that were prepared in two steps. First, the CuO/ polystyrene (PS) composites were prepared by a surface ion exchange strategy for in-situ reductive deposition on the surface of carboxy-capped PS particles.

Electropolymerized molecular imprinting on gold nanoparticle-carbon nanotube modified electrode for electrochemical detection of triazophos.

An electrochemical sensor for pesticide triazophos (TAP) was prepared by deposition of gold nanoparticles (AuNPs) on carbon nanotubes (CNTs) modified glassy carbon (GC) electrode surface using a potentiostatic method, followed by electropolymerizing of o-hydroxyphenol at the AuNP/CNT/GC electrode surface in the presence of template triazophos via cyclic voltammetry. The electrochemical response of triazophos at the TAP-imprinted polyhydroxyphenol (PHP) modified AuNP/CNT/GC (PHP/AuNP/CNT/GC) electrode was investigated by cyclic voltammetry. The cyclic voltammetric response of triazophos at the TAP-imprinted PHP/AuNP/CNT/GC electrode was significantly higher than that at bare GC, CNT/GC, AuNP/CNT/GC, imprinted PHP/CNT/GC and non-imprinted PHP/AuNP/CNT/GC electrodes.

Chemiluminescence sensor for sulfonylurea herbicide using molecular imprinted microspheres as recognition element.

Uniform molecular imprinting microspheres were prepared using precipitation polymerization with thifensulfuron-methyl (TFM) as template, acrylamide as functional monomer and ethylene glycol dimethacrylate as cross-linker. TFM could be selectively adsorbed on the molecularly imprinted polymers (MIPs) matrix through the hydrogen bonding interaction and the adsorbed TFM could be sensed by its strikingly enhancing effect on the weak chemiluminescence (CL) reaction between luminol and hydrogen peroxide. On this basis, a novel CL sensor for the determination of TFM using MIPs as recognition elements was established.

Surface molecular self-assembly for organophosphate pesticide imprinting in electropolymerized poly(p-aminothiophenol) membranes on a gold nanoparticle modified glassy carbon electrode.

This paper reports a surface molecular self-assembly strategy for molecular imprinting in electropolymerized polyaminothiophenol (PATP) membranes at the surface of gold nanoparticles (AuNPs) modified glassy carbon (gc) electrode for the electrochemical detection of pesticide chlorpyrifos (CPF). Electropolmerizable p-aminothiophenol (ATP) was first assembled on the AuNPs at the gc electrode surface by the formation of Au-S bonds, and subsequently, the CPF template was further assembled onto the monolayer of ATP through the hydrogen-bonding interaction between amino group and CPF. A conductive hybrid membrane was fabricated at the assembled gc electrode by the electropolymerization in a mixing solution containing additional ATP and CPF templates, and meanwhile, the CPF was spontaneously imprinted into the PATP/AuNP film.

Determination of tannic acid in industrial wastewater based on chemiluminescence system of KIOâ‚„-Hâ‚‚Oâ‚‚-Tween40.

The oxidation reaction of Hâ‚‚Oâ‚‚ with KIOâ‚„ can produce chemiluminescence (CL) in the presence of the surfactant Tween40 and the CL intensity of the CL system KIOâ‚„-Hâ‚‚Oâ‚‚-Tween40 can be strikingly enhanced after injection of tannic acid. On this basis, a flow injection method with CL detection was established for the determination of tannic acid. The method is simple, rapid and effective to determine tannic acid in the range of 7.

Roles and functions of community mental health nurses caring for people with schizophrenia in Taiwan.

Aims And Objectives: The study aimed to understand the nursing roles and functions of public health nurses and home health nurses in Taiwan and the factors that affect nursing roles and functions of nurses that provide community mental health home visiting services.

Background: Although community nurses provide more psychiatric home visiting services than other psychiatric professionals, little research on their roles and functions has been conducted.

Design: Nursing roles and functions were developed through use of grounded theory method of Strauss and Corbin.

Recombinant human parathyroid hormone 1-34: pharmacokinetics, tissue distribution and excretion in rats.

The objective of this work was to characterize the preclinical pharmacokinetics, tissue distribution, and excretion profiles of recombinant human parathyroid hormone (1-34) [rhPTH (1-34)] in healthy rats. Pharmacokinetic properties of (125)I-rhPTH (1-34) were examined after a single subcutaneous (s.c.

[Determination of phloroglucinol by a new flow injection chemiluminescence method].

Chemiluminescence reaction of phloroglucinol with potassium permanganate in the presence of formaldehyde as an enhancer was investigated. A new chemiluminescence method for the determination of phloroglucinol with flow injection technique was developed. The linear range for phloroglucinol is 5.