Environmental chemistry is a branch of chemistry that deals with the study of chemical processes occurring in the environment and their effects on ecosystems, human health, and the planet as a whole. It focuses on understanding the sources, reactions, transport, effects, and fates of chemical species in air, water, and soil. Environmental chemistry integrates principles from analytical, inorganic, organic, and physical chemistry to investigate pollutants, natural cycles, and the interactions between human activities and natural systems. The primary goal of environmental chemistry is to identify harmful substances, understand their behavior in the environment, and develop methods to prevent, control, or remediate pollution. It plays a critical role in addressing environmental challenges such as climate change, water contamination, air pollution, and soil degradation. By examining both natural and anthropogenic processes, environmental chemistry contributes to sustainable development, environmental monitoring, and regulatory policies. The scope of environmental chemistry is broad and multidisciplinary. It includes the study of atmospheric chemistry, which investigates the chemical composition of the atmosphere, the sources and sinks of gases, and reactions that lead to phenomena like acid rain, ozone depletion, and global warming. Air pollutants such as sulfur dioxide, nitrogen oxides, carbon monoxide, and particulate matter are analyzed to understand their chemical transformations and impact on human health and ecosystems. Water chemistry is another crucial area, examining the chemical quality of surface water, groundwater, and marine environments. Contaminants such as heavy metals, pesticides, and organic pollutants are monitored and treated using chemical principles. Soil chemistry explores the composition and reactions