2012.3ChinaMetrology7979TECHNOLOGY()、。,。,JJG291-2008《》。,,,、,。、,,,::,,,,。()(),。(0.6~0.8)V,,,,。:(I=kP02),。,,,,。:,,,,,。。:Henry,P=C·HPC,Henry:P=C·H(1):H———Henry()。Henry,,,Henry,Henry,。。、,,,。20℃,,9.08mg/L,9.08mg/L(,)。,□ChinaMetrology2012.3:(Henry),,(),(),()。20℃、,273mg/L,9.08mg/L,30;,,9.08mg/L,。、、,,Henry。,。1.P02=(P-PW×)×(2):PW———,JJG291-2008D(,100%RH);21%。(1)(2),(Henry),,:H=(101325-PW)×CS=(P-PW)×CS′(3)JJG291-2008:CS′=CSP-PW101325-PW(4),,(4)CS′。,(),P,(4)。,PP0,。,JJG291-2008,。2.(2),,,,,Henry。1,,Henry,。,。,,,(),,,。,:;Henry。,,。3.Henry,,。(1),。JJG291-2008,n(g/L),NsnNsn=N0-0.0559n(5),(5),Herny。,,,。、,8080TECHNOLOGY1Henry4030201003.22.82.42.01.6Henry(℃)2012.3ChinaMetrology8181TECHNOLOGY,。,JJG291-2008。,。1.JJG291-2008,10℃、20℃30℃。,,。JJG291-2008,、。;,,。2.JJG291-2008,。,JJG291-2008,,,。JJG291-20085.3.9:。,(5),,。,,,N′,Nsn。、,:、,Henry。,,、,。,Henry、,,。,。【】JJG178-2007《、、》,,、。,,,,。,、,。、,-,A=-lg(I/IO)=KLC(1):A———;I———;IO———;K———□