Simazine stable isotopes are a group of non-radioactive forms of the herbicide simazine, which are used in scientific research to investigate the fate, transport, and degradation of the herbicide in the environment. These isotopes are labeled with stable carbon, nitrogen, or chlorine atoms, allowing researchers to track simazine in complex environmental systems with high precision and accuracy. Simazine stable isotopes are a valuable tool for understanding the environmental impact of simazine and developing effective strategies for its management.