To establish a rapid trace-quantification scheme for elements contained in highly purified tungsten, we studied the most suitable conditions for separating the elements using solid-phase-extraction as a pretreatment for inductively coupled plasma-mass spectrometry (ICP-MS). We used chemically bonded silica gels belonging to the functional group of benzylsulfonic acid as extracting agent. Tungst...

  Neurogenic factors for the tonus of the cerebral blood vessels were investigated by systemic ad ministration of phentolamine (PH) and norepinephrine (NE) in lightly anesthetized and im mobilized dogs. Systemic blood pressure (SBP), intracranial pressure (ICP), and cerebral blood flow (CBF) were recorded simultaneously. Reversible blocking of the brain function was produced by a local inj...

increasing industrial activities lead to entrance of different pollutants into the environment, especially water resources. because of their persistency and non-biodegradation, metals can pose a threat to health of human and other organisms. sediment, fish (lucioperca stizostedion and cyprinus carpio), and common reed (phragmites australis) samples were collected from sattarkhan dam for investi...

Analytical methods using sector field ICP-MS and ICP-AES were developed for the determination of Al, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, Hg, Li, Mg, Mn, Mo, Ni, Pb, Sb, Si, Sn, Sr, Tl, V, W, Zn and Zr in cerebrospinal fluid, urine, serum and blood. Sample treatment procedures merging high sample throughput, simplicity and low contamination risk were set up. Method performances were evaluated in...

Although a variety of techniques are available to measure nanoparticles, single particle ICP-MS (SP-ICP-MS) has become increasingly important due to its speed and ability to measure environmentally relevant low nanoparticle concentrations, surpassing the limitations of light-based technologies.6-7 Monitoring Cerium Dioxide and Zinc Oxide Nanoparticles through Drinking Water Treatments using Sin...