整理各种缓冲液的配制方法

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1、1甘氨酸盐酸缓冲液(0.05mol/L)X毫升0.2 mol/L甘氨酸+Y毫升0.2 mol/L HCI,再加水稀释至200毫升pHXYpHXY2.02.42.62.85050505044.032.424.216.83.03.23.43.65050505011.48.26.45.0甘氨酸分子量 = 75.07,0.2 mol/L甘氨酸溶液含15.01克/升。2邻苯二甲酸盐酸缓冲液(0.05 mol/L)X毫升0.2 mol/L邻苯二甲酸氢钾 + 0.2 mol/L HCl,再加水稀释到20毫升pH(20)XYpH(20)XY2.22.42.62.83.0555554.0703.9603.295

2、2.6422.0223.23.43.63.855551.4700.9900.5970.263邻苯二甲酸氢钾分子量 = 204.23,0.2 mol/L邻苯二甲酸氢溶液含40.85克/升3磷酸氢二钠柠檬酸缓冲液pH0.2mol/L Na2HPO4(毫升)0.1mol/L柠檬酸(毫升)pH0.2mol/L Na2HPO4(毫升)0.1mol/L柠檬酸(毫升)2.22.42.62.83.03.23.43.63.84.04.24.44.64.85.00.401.242.183.174.114.945.706.447.107.718.288.829.359.8610.3010.6018.7617.821

3、6.8315.8915.0614.3013.5612.9012.2911.7211.1810.6510.149.705.25.45.65.86.06.26.46.66.87.07.27.47.67.88.010.7211.1511.6012.0912.6313.2213.8514.5515.4516.4717.3918.1718.7319.1519.459.288.858.407.917.376.786.155.454.553.532.611.831.270.850.55Na2HPO4分子量 = 14.98,0.2 mol/L溶液为28.40克/升。Na2HPO4-2H2O分子量 = 178.

4、05,0.2 mol/L溶液含35.01克/升。C4H2O7H2O分子量 = 210.14,0.1 mol/L溶液为21.01克/升。4柠檬酸氢氧化钠-盐酸缓冲液pH钠离子浓度(mol/L)柠檬酸(克)C6H8O7H2O氢氧化钠(克)NaOH 97%盐酸(毫升)HCl(浓)最终体积(升)2.23.13.34.35.35.86.50.200.200.200.200.350.450.3821021021021024528526684838383144186156160116106456810512610101010101010 使用时可以每升中加入1克克酚,若最后pH值有变化,再用少量50%氢氧化

5、钠溶液或浓盐酸调节,冰箱保存。 5柠檬酸柠檬酸钠缓冲液(0.1 mol/L)pH0.1 mol/L柠檬酸(毫升)0.1 mol/L柠檬酸钠(毫升)pH0.1 mol/L柠檬酸(毫升)0.1 mol/L柠檬酸钠(毫升)3.03.23.43.63.84.04.24.44.64.818.617.216.014.914.013.112.311.410.39.21.42.84.05.16.06.97.78.69.710.85.05.25.45.65.86.06.26.46.68.27.36.45.54.73.82.82.01.411.812.713.614.515.316.217.218.018.6柠檬

6、酸C6H8O7H2O:分子量210.14,0.1 mol/L溶液为21.01克/升。柠檬酸钠Na3 C6H5O72H2O:分子量294.12,0.1 mol/L溶液为29.41克/毫升。6乙酸乙酸钠缓冲液(0.2 mol/L)pH(18)0.2 mol/LNaAc(毫升)0.3 mol/LHAc(毫升)pH(18)0.2 mol/LNaAc(毫升)0.3 mol/LHAc(毫升)2.63.84.04.24.44.60.751.201.802.653.704.909.258.808.207.356.305.104.85.05.25.45.65.85.907.007.908.609.109.404

7、.103.002.101.400.900.60Na2Ac3H2O分子量 = 136.09,0.2 mol/L溶液为27.22克/升。7磷酸盐缓冲液(1)磷酸氢二钠磷酸二氢钠缓冲液(0.2)pH0.2 mol/LNa2HPO4(毫升)0.3 mol/LNaH2PO4(毫升)pH0.2 mol/L Na2HPO4(毫升)0.3 mol/LNaH2PO4(毫升)5.85.96.06.16.26.36.46.56.66.76.86.98.010.012.315.018.522.526.531.537.543.549.555.092.090.087.785.081.577.573.568.562.556

8、.551.045.07.07.17.27.37.47.57.67.77.87.98.061.067.072.077.081.084.087.089.591.593.094.739.033.028.023.019.016.013.010.58.57.05.3Na2HPO42H2O分子量 = 178.05,0.2 mol/L溶液为85.61克/升。Na2HPO42H2O分子量 = 358.22,0.2 mol/L溶液为71.64克/升。Na2HPO42H2O分子量 = 156.03,0.2 mol/L溶液为31.21克/升。(2)磷酸氢二钠磷酸二氢钾缓冲液(1/15 mol/L)pHmol/L/1

9、5Na2HPO4(毫升)mol/L/15KH2PO4(毫升)pHmol/L/15Na2HPO4(毫升)mol/L/15KH2PO4(毫升)4.925.295.916.246.476.646.816.980.100.501.002.003.004.005.006.009.909.509.008.007.006.005.004.007.177.387.738.048.348.678.187.008.009.009.509.759.9010.003.002.001.000.500.250.100Na2HPO42H2O分子量 = 178.05,1/15M溶液为11.876克/升。KH2PO4分子量 =

10、 136.09,1/15M溶液为9.078克/升。8磷酸二氢钾氢氧化钠缓冲液(0.05M)X毫升0.2M K2PO4 + Y毫升0.2N NaOH加水稀释至29毫升pH(20)X (毫升)Y(毫升)pH(20)X (毫升)Y(毫升)5.86.06.26.46.66.85555550.3720.5700.8601.2601.7802.3657.07.27.47.67.88.05555552.9633.5003.9504.2804.5204.6809巴比妥钠-盐酸缓冲液(18)pH0.04M巴比妥钠溶液0.2V盐酸pH0.04M巴比妥钠溶液(毫升)0.2N盐酸(毫升)6.87.07.27.47.6

11、7.88.08.210010010010010010010010018.417.816.715.313.411.479.397.218.48.68.89.09.29.49.61001001001001001001001005.213.822.521.651.130.700.35巴比妥钠盐分子量=206.18;0.04M溶液为8.25克/升10Tris盐酸缓冲液(0.05M,25)50毫升0.1M三羟甲基氨基甲烷(Tris)溶液与X毫升0.1N盐酸混匀后,加水稀释至100毫升。pHX(毫升)pHX(毫升)7.107.207.307.407.507.607.707.807.908.0045.744.743.442.040.338.536.634.532.029.28.108.208.308.408.508.608.708.808.9026.222.919.917.214.712.410.38.57.0三羟甲基氨基甲烷(Tris)HOCH2 CH2OH CHOCH2 NH2分子量=121.14;0. 1M溶液为12.114克/升。Tris溶液可从空气中吸收二氧化碳,使用时注意将瓶盖严。11硼酸硼砂缓冲液(0.2M硼酸根)pH0.05M硼砂(毫

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