The presence of artificial and natural radioactivity in the environment is currently a topic of great relevance and ecological interest, even in human health issue, due to the increase of different anthropogenic activities. The use of multicommuted flow analysis techniques (e.g. Multi-Syringe Flow Injection Analysis - MSFIA, Lab-On-Valve - LOV and Lab-In-Syringe - LIS) has allowed the automation of radiochemical procedures to separate and preconcentrate radionuclides in environmental and biological samples. In comparison with the manual approach commonly used in routine analysis for radioactivity monitoring, the automation has enabled the development of highly reproducible methodologies with a great analysis frequency. Moreover, during the analytical procedure, the intervention of the analyst is drastically reduced, minimizing the radiological risk. The automation also offers significant advantages such as minimum consumption of time and reagents, reducing the cost and the generation of waste, contributing to the green chemistry. In this review, several multicommuted flow analysis techniques (MSFIA, LOV and LIS) reported in the last decade applied for the development of automatic sample treatment methodologies, used to separate, preconcentrate and quantify ⁹⁰Sr, ⁹⁹Tc, natural U and ²²⁶Ra in biological and environmental samples are described and critically compared.

由于各种人为活动的增加，环境中存在人工和天然放射性目前是一个具有重大意义和生态意义的话题，即使在人类健康问题上也是如此。多通流分析技术（例如多注射器流动注射分析-MSFIA，阀上实验室-LOV和注射器中实验室-LIS）的使用已实现了放射化学程序的自动化，以分离和浓缩环境和生物中的放射性核素样品。与通常用于放射性监测的常规分析中的手动方法相比，自动化使开发具有高分析频率的高度可重现的方法成为可能。而且，在分析过程中，大大减少了分析师的干预，最小化放射风险。自动化还具有显着的优势，例如减少了时间和试剂的消耗，降低了成本，减少了废物的产生，有助于绿色化学的发展。在本综述中，过去十年中报道的几种多通流分析技术（MSFIA，LOV和LIS）适用于自动样品处理方法的开发，用于分离，预浓缩和定量描述并严格比较了生物和环境样品中的⁹⁰ Sr，⁹⁹ Tc，天然U和²²⁶ Ra。