Trace organic analysis are for organic compounds present at or below the part-per-thousand level in a sample. The analysis provides the identity (qualitative result) and the amount (quantitative result). The challenge is to perform the analysis under conditions where the relative amounts of other substances in the sample are vastly greater than that of the analyte. Oftenly it becomes necessary to separate the analyte from the bulk of the other substances such as potential interferences, in the sample for e.g.matrix, before a final determination (amount) can be accomplished. Generally, the final determination involves a final separation/detection.
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.
Last date updated on July, 2014