Which of the following is a benefit of using XRF for lead detection?

Using X-ray fluorescence (XRF) for lead detection offers the significant advantage of providing immediate results. This is a key benefit because it allows inspectors and risk assessors to quickly determine the presence and concentration of lead in various materials, such as paint, soil, and dust, during the inspection process. Immediate feedback helps in making timely decisions regarding safety and remediation efforts, which is particularly important in environments where lead exposure poses serious health risks.

In contrast, the other options do not accurately represent the advantages of XRF. The method is not considered cost prohibitive when weighed against the efficiency it provides, nor does it require a lengthy process; rather, XRF can deliver results within minutes. Additionally, XRF is versatile and can be effective on a wide range of materials rather than being limited to specific ones. This flexibility enhances its utility in various inspection scenarios, further solidifying its status as a preferred tool in lead detection.