Precision in sampling

Flow-injection methods are quicker, more precise and use less reagents than other techniques in addition, they are very useful where only a Hmited amount of sample is available. The main advantages of the combination of FIA with DCP/OES are the increase in precision in sample handhng, fewer physical interferences, ahigher throughput of samples and versatihty towards physical and chemical properties of reagents. Some minor disadvantages are the loss of sensitivity compared with continuous nehuHzation, and the fact that only one element can he determined at a time. 

Lambkin. D.. Nortcliff, S., and White, T. (2004). The importance of precision in sampling sludges, biowastes and treated soils in a regulatory framework. Trends Anal. Chem. 23, 704-715. 

---