|Analytical toxicolgy is the study and detection, identification, and measure of foreign compounds (xenobiotics) in biological and different specimens. Analytical strategies are used for identifying the compounds. These wide range of compounds include chemicals, pesticides, prescribed drugs, medicine of abuse and natural toxins. Toxicology is a branch of biology, chemistry, and medicine concerned with the study of the adverse effects of chemicals on living organisms. High-impact journals are those considered to be highly influential in their respective fields. The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information.The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.