Mercury vapour standard concentration ng/ml

J E Patterson - jepspectro.com - 20231119

Description


Mercury vapour calibration

Elemental mercury vapour in air: The origins and validation of the 'Dumarey equation' describing the mass concentration at saturation

The concentration of mercury vapour in air, above liquid mercury, depends on the temperature.
A good calibration curve can be obtained using a simplified Dumarey equation.
Reference: R. Dumarey, E. Temmerman, R. Dams, J. Hoste, Analyt. Chim. Acta 170, 337 (1985).

Enter temperature T in °C of the mercury calibration vessel.
T GSB A
The mercury vapour concentration in the calibration vessel is displayed in ng/ml

The equation is Hg ng/ml = 10(-3229/(T+273.15)+14.6 - Log(T +273.15)).
At 20°C mercury saturated air has a mercury concentration of 13.12 ng/l

Program Resources

Labels

Name Description
 A Enter temperature in °C

Storage Registers

Name Description
 1 Temperature in °K
 2 Mercury vapour concentration ng/ml

Program

Line Display Key Sequence Line Display Key Sequence
000 014 16 CHS
001 42,21,11 f LBL A 015 45,10, 1 RCL ÷ 1
002 2 2 016 1 1
003 7 7 017 4 4
004 3 3 018 48 .
005 48 . 019 6 6
006 1 1 020 40 +
007 5 5 021 45 1 RCL 1
008 40 + 022 43 13 g LOG
009 44 1 STO 1 023 30 −
010 3 3 024 13 10ˣ
011 2 2 025 44 2 STO 2
012 2 2 026 43 32 g RTN
013 9 9