AUTOMATED SAMPLER-INJECTOR APPARATUS AND METHOD FOR SAMPLING A QUANTITY OF SAMPLE AND TESTING PORTIONS OF SAID QUANTITY

摘要

ABSTRACT OF THE DISCLOSUREAn automated sampler-injector apparatus andmethod of sampling, for taking samples from multiplesources and repetitively injecting small portions of aquantity sampled from a single source into a liquidchromatograph column for analysis. The apparatuscomprises a syringe means and injector tube forming asyringe loop for drawing a quantity of sample from asample container. Carousel means for positioning aselected sample container beneath the syringe loop isprovided, and an injector valve having a sample looptherein is further provided for receiving portions of aquantity of sample from the syringe loop and retainingsuch portion in the sample loop and furthertransferring the portion of sample from the sample loopinto a liquid chromatograph for analysis. The methodcomprises a procedure for utilizing the apparatus so asto repetitively inject portions of the sampled quantityinto the valve, switching the valve from a loadposition to an inject position to inject the portion ofsample into the liquid chromatograph, and repeating theprocess until the quantity of sample contained in thesyringe loop is exhausted.