磷酸缓冲液配制.doc

表A1-3B 25下0.1mol/L磷酸钠缓冲液的配制pH 1mol/L Na2HPO4的体积/mL 1mol/L NaH2P04体积/mL5.8 7.9 92.16.0 12.0 88.06.2 17.8 82.26.4 25.5 74.56.6 35.2 64.86.8 46.3 53.77.0 57.7 42.37.2 68.4 31.67.4 77.4 22.67.6 84.5 15.57.8 89.6 10.48.0 93.2 6.8表A1-3B 25下0.1mol/L磷酸钠缓冲液的配制pH 1mol/L Na2HPO4的体积/mL 1mol/L NaH2P04体积/mL5.8 7.9 92.16.0 12.0 88.06.2 17.8 82.26.4 25.5 74.56.6 35.2 64.86.8 46.3 53.77.0 57.7 42.37.2 68.4 31.67.4 77.4 22.67.6 84.5 15.57.8 89.6 10.48.0 93.2 6.8另：其它各种另PH值的0.2MPB（100ml)配方：pH0.2MNaH2PO4（ml）0.2MNa2HPO4（ml）5.793.56.55.89285.990106.087.712.36.185156.281.518.56.377.522.56.473.526.56.568.531.56.662.537.56.756.543.56.851496.945557.038627.133677.228727.323777.419ml81ml7.516847.613877.710.50.57.88.591.57.97938.05.394.7配制方法：配制时，常先配制0.2mol/L的 NaH2PO4和0.2mol/L的Na2HPO4，两者按一定比例混合即成0.2mol/L的磷酸盐缓冲液（PB），根据需要可配制不同浓度的PB和PBS。（1）0.2mol/L的 Na2HPO4；称取Na2HPO4.12H2O 31.2g(或 NaH2PO4H2O 27.6g)加重蒸水至1000ml溶解。（2）0.2mol/L的 Na2HPO4：称取NaHPO4.12H2O 71.632g（或 Na2HPO47H2O 53.6g或 Na2HPO42H2O 35.6g）加重蒸水至1000ml溶解。（3）0.2mol/L pH7.4的PB的配制：取19ml 0.2mol/L的 NaH2PO4和81ml 0.2mol/L的 Na2HPO412H2O,充分混合即为0.2mol/L的PB（pH约为7.47.5）。若pH偏高或偏低，可通过改变二者的比例来加以调整，室温保存即可。0.2mol/L磷酸盐缓冲液（pH5.78.0）pH 0.2mol/L NaH2PO4(ml) 0.2mol/L Na2HPO4(ml)5.7 93.5 6.55.8 92.0 8.05.9 90.0 10.06.0 87.7 12.36.1 85.0 15.06.2 81.5 18.56.3 77.5 22.56.4 73.5 26.56.5 68.5 31.56.6 62.5 37.56.7 56.5 43.56.8 51.0 49.06.9 45.0 55.07.0 39.0 61.07.1 33.0 67.07.2 28.0 72.07.3 23.0 67.07.4 19.0 81.0