Inter-element fractionation in laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analysis is one of the major challenges for using the technique for in situ trace element determination and isotopic ratio measurement of geological, environmental and biological solid samples. Attempts have been made to reduce inter-element fractionation in LA-ICP-MS analysis. However, this f...

Six arsenic species [arsenate, arsenite, arsenocholine, arsenobetaine, monomethyl arsonic acid, and dimethyl arsinic acid] present in human urine were determined using ion-exchange chromatography combined with inductively coupled plasma mass spectrometry (IC-ICP-MS). Baseline separation was achieved for all six species as well as for the internal standard (potassium hexahydroxy antimonate V) in...

The complete chemical analysis of natural silicates has previously been accomplished only by combining laser ablation ICP-MS with electron microprobe (EMP) analysis to provide complementary information on major element constituents. Here, we present a method for laser ablation ICP-MS analysis of major elements in silicate glasses and minerals that, when applied using a 193 nm laser system coupl...

An ICP-MS validated method for the rapid determination of chromium (Cr), selenium (Se), and molybdenum (Mo) in infant formula and adult nutritional products was successfully transferred from the Agilent 7500cx ICP-MS to the Agilent 7700x ICP-MS, and from lab 1 to lab 2, respectively. The key advantage of the method is that all samples can be analyzed using a single-cell gas mode (helium mode) t...

Germanium telluride (GeTe) is both polar and metallic, an unusual combination of properties in any material system. The large concentration of free-carriers in GeTe precludes the coupling of external electric field with internal polarization, rendering it ineffective for conventional ferroelectric applications and polarization switching. Here we investigate alternate ways of coupling the polar ...

UNLABELLED Intrahepatic cholestasis of pregnancy (ICP) is not a common complication of pregnancy, but may be a threat to fetal condition. The elevated level of bile acids defines ICP and determines its severity. Indicators of hepatocyte damage during ICP are elevated ALT and AST. The fetal condition in the ICP depends on the degree of liver damage. The most common complication is preterm delive...

BACKGROUND Data on meconium bile acid composition in newborn babies of patients with intrahepatic cholestasis of pregnancy (ICP) are relatively scant, and changes that occur on ursodeoxycholic acid (UDCA) administration have not been evaluated. AIMS To investigate bile acid profiles in meconium of neonates from untreated and UDCA treated patients with ICP. Maternal serum bile acid composition...

this paper focused on the characterization of electrochemical behavior of a martensitic stainless steel inthe acidic solutions. for this purpose, electrochemical parameters were derived from potentiodynamicpolarization, mott schottky analysis and electrochemical impedance spectroscopy (eis) techniques.the potentiodynamic polarization results showed that corrosion current density of aisi 420 sta...

BACKGROUND Intrahepatic cholestasis of pregnancy (ICP) is a pregnancy-associated liver disease of unknown etiology. The aim of this study was to investigate the change in maternal and fetal adrenal function in clinical and experimental ICP. MATERIAL/METHODS The maternal and fetal serum levels of cortisol and dehydroepiandrosterone sulfate (DHEAS) were determined in 14 women with ICP and in pr...