This journal invites researchers for submitting of the novel and new manuscript in special issue as analytical chemistry in occupational health, metals in humans matrix, and biomedical analysis. This journal is focused on publishing the latest and most comprehensive developments and techniques in the field of new methods in analytical chemistry, environmental analytical chemistry (soil, waters, wastewaters, and air), applied analytical chemistry, analytical chemistry in air pollution based on sorbents, analytical methods in environmental samples based on nanochemistry and nanotechnology.