Professor Dr. Sattar Jabbar al-Khafaji , who works in the field of Environmental Geochemistry, has been selected as a scientific arbitrator in the International Journal of Science and Technology (IJEST), an open-source Journal that publishes research in the fields of Environmental Science, Technology, Engineering and Management, and is classified among the scopes and clarivet of the quarter the first is Q1 with an impact factor (impact factor=3.4) and is published by the publishing house springero science + business media