Abstract: A method for continuously determining characteristics of a process fluid includes inline real-time analysis. In one embodiment, inline analysis of water, oil, and salt anions provides continuously obtained measurements for determination of various drilling fluid properties and assessment of drilling operation parameters and wellbore conditions. In one embodiment, the continuously provided measurements and/or data calculated therefrom allow for monitoring and controlling of a downhole drilling operation. In embodiments of the method, automated control of drilling operations using the continuously generated information can be accomplished. In one embodiment, a material balance of drilling fluid components using the continuously generated information is provided.