Sampling and sample preparation and liquid-liquid extraction
14 بار بازدید -
3 سال پیش
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Two frequently encountered analytical problems
Two frequently encountered analytical problems are: (1) the presence of matrix
components interfering with the analysis of the analyte; and (2) the presence of analytes at concentrations too small to analyze accurately. We have seen how a separation can be used to solve the former problem. Interestingly, separation techniques
can often be used to solve the second problem as well. For separations in which a
complete recovery of the analyte is desired, it may be possible to transfer the analyte
in a manner that increases its concentration. This step in an analytical procedure is
known as a preconcentration
3 سال پیش
در تاریخ 1400/08/27 منتشر شده
است.
14
بـار بازدید شده