????????
?????:
??[HCO3-]?
1.??
(1)???????????HCl??HClH+??CO2+H2OH2CO3H+HCO3-?Cl-?????????H+Cl-?HCl?HCl??????NaHCO3???H+????HCl????NaHCO3??????NaHCO3HCl???[HCO3-]?????[HCO3-]??
????Cl+K+????????????Cl-???HCO3-???K+???H+????????Na+??H+K+??
2H+??H+?????????????H+K+,?Na+?H+?H2COH3H+HCO3-??HCO3-??Na+??????????
2.
1???????NaHCO3????HCO3-????????????
2?HCO3-???
3??????500??16.8mEq,??HCO3-???30004000??
3.?
?????NaHCO3???K+??,??K+??H+?Na+HCO3-???????????????K+????K+H+?????????????????H+
4....
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??3.5mmol/L???2mmol/L?????????????50-100mmol90?????????????????????????????????????????????3.55.5mmol/L?4.2mmol/L???3.5mmol/L??????????????????????????????????
1???????????????????????????????????????????????????????47???20mmol/L?710?510mmol/L??38150mmol/L
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??5.5mmol/L?????????????????????????????????????????????
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