A sequential injection (SI) method for the determination of mercury via cold vapor atomic absorption spectrophotometry is presented. The method differs from flow injection (FI) cold vapor methods for the determination of mercury because of the simplicity of the system required for the method: one pump, one valve, a gas-liquid separator, and an atomic absorption spectrophotometer equipped with a...

We sought to establish optimum conditions for measuring calcium in erythrocytes by atomic absorption spectrophotometry. The conditions we selected are as follows. Wash one volume of fresh heparin-treated packed cells once with 30 volumes of isotonic buffered saline (pH 7.4) at a temperature somewhat exceeding 25 degrees C. Dilute the washed packed cells 10-fold with 12 mmol/L hydrochloric acid,...

Journal of Applied Sciences & Environmental Management, Vol. 5, No. 1, June, 2001, pp. 9-16 Development of a Simple System for the Determination of Arsenic after Hydride Generation Atomic Absorption Spectrophotometry * MUMUNI, A.R. ; PEACOCK, C. J Department of chemistry, University of Lancaster, Lancaster LAI 4YA, UK *Corresponding author Present address: Department of Pure and Industrial Chem...

OBJECTIVE The purpose of this study was to quantify the amount of calcium ions removed from the root canal by etidronic acid (HEBP), BioPure MTAD, and SmearClear using atomic absorption spectrophotometer. MATERIALS AND METHODS Fifty (n = 50) freshly extracted human mandibular premolar teeth were collected and decoronated at the cementoenamel junction. The canals were prepared in a crown down ...

Rice (Oryza sativa L.) is the most important food crop of the developing world and the staple food of more than half the global population. An experiment was carried out to identify the iron rich rice genotypes. Total fifty two rice genotypes were used for this purpose. Iron (Fe) content of rice grain samples was determined by using Atomic Absorption Spectrophotometer (AAS). In this process the...

OBJECTIVE Helicobacter pylori infection can cause disease from mild to severe that may be accompanied by micronutrient deficiencies. We aimed to investigate serum zinc, copper, magnesium and selenium levels in Helicobacter pylori positive children. MATERIALS AND METHODS Thirty-four children, with chronic abdominal pain and diag-nosed to be Helicobacter pylori-positive and 20 healthy children ...

Two statistical techniques; discriminant analysis (DA) and logistic regression model were used to analyze the concentration of arsenic and heavy metal contents in cockles (Anadara granosa) from two estuaries in the state of Penang, Malaysia. This study was undertaken to understand the interrelationship between different parameters and also to identify probable source component in order to expla...