New-Onset Atrial Fibrillation in the Post-Primary PCI Setting: A Systematic Review

Background: Atrial fibrillation is a relatively common complication of acute myocardial infarction with significant impact on the short and long-term prognosis

Ultra-trace determination of 90Sr, 137Cs, 238Pu, 239Pu, and 240Pu by triple quadruple collision/reaction cell-ICP-MS/MS: Establishing a baseline for global fallout in Qatar soil and sediments

The development of practical, fast, and reliable methods for the ultra-trace determination of anthropogenic radionuclides 90Sr, 137Cs, 238Pu, 239Pu, and 240Pu by triple quadruple collision/reaction cell inductively coupled plasma mass spectrometry (CRC-ICP-MS/MS) were investigated in term of its accuracy and precision for producing reliable results. The radionuclides were extracted from 1 kg of the environmental soil samples by concentrated nitric and hydrochloric acids. The leachate solutions were measured directly by triple quadrupole CRC-ICP-MS/MS. For quality assurance, a chemical separation of the concerned radionuclides was conducted and then measured by single quadrupole-ICP-MS. The developed methods were next applied to measure the anthropogenic radionuclides 90Sr, 137Cs, 238Pu, 239Pu, and 240Pu in soil samples collected throughout the State of Qatar. The average concentrations of 90Sr, 137Cs, 238Pu, 239Pu, and 240Pu were 0.606 fg/g (3.364 Bq/kg), 0.619 fg/g (2.038 Bq/kg), 0.034 fg/g (0.0195 Bq/kg), 65.59 fg/g (0.150 Bq/kg), and 12.06 fg/g (0.103 Bq/kg), respectively.This article was made possible by NPRP award [NPRP4-1105-1-173] from the Qatar National Research Fund (a member of The Qatar Foundation). The statements made herein are solely the responsibility of the authors.Scopu

Radioactivity measurements and risk assessments in soil samples at south and middle of Qatar

ABSTRACT Health risks associated with the exposure to the natural radioactivity present in soil materials have great concern all over the world. Thus soil samples were collected from an urban areas at south and middle of Qatar in order to measure natural radioactivity