Mercury IDL on AA 240Z

Hi All.

1) What is the IDL for mecrury on AA240Z (furnace) with VGA 77 and

2) what is the normal equilibration time of the mercury absorbtion cell at the concentration used for this IDL measurements?

I found that at 1ppb (Hg ion) the signal is increasing for very, very long time (so, the cell is NOT equilibrated) - more than one hour, in fact.

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