常用缓冲液的配制（从酸性到碱性）.doc

常用缓冲液的配制（从酸性到碱性）常用缓冲液的配制方法1.甘氨酸-盐酸缓冲液（0.05M）X ml 0.2M甘氨酸 +Y ml 0.2M盐酸 再加水稀释至200mlpH X/ml Y/ml pH X/ml Y/ml2.2 50 44.0 3.0 50 11.42.4 50 32.4 3.2 50 8.22.6 50 24.2 3.4 50 6.42.8 50 16.8 3.6 50 5.0甘氨酸分子量75.07 0.2M甘氨酸溶液含15.01g/L 2.邻苯二甲酸-盐酸缓冲液（0.05M）X ml 0.2M邻苯二甲酸氢钾 +Y ml 0.2M盐酸 再加水稀释至200mlpH X Y pH X Y2.2 5 4.670 3.2 5 1.4702.4 5 3.960 3.4 5 0.9902.6 5 3.295 3.6 5 0.5972.8 5 2.642 3.8 5 0.2633.0 5 2.032 邻苯二甲酸氢钾分子量2.4.23 0.2M邻苯二甲酸氢钾溶液含40.85g/L3.磷酸氢二钠-柠檬酸缓冲液pH 0.2M Na2HPO4/ml 0.1M柠檬酸/ml pH 0.2M Na2HPO4/ml 0.1M柠檬酸/ml2.2 0.40 19.6 5.2 10.72 9.282.4 1.24 18.76 5.4 11.15 8.852.6 2.18 17.82 5.6 11.60 8.402.8 3.17 16.83 5.8 12.09 7.913.0 4.11 15.89 6.0 12.63 7.373.2 4.94 15.06 6.2 13.22 6.783.4 5.70 14.30 6.4 13.85 6.153.6 6.44 13.56 6.6 14.55 5.453.8 7.10 12.90 6.8 15.45 4.554.0 7.71 12.29 7.0 16.47 3.534.2 8.28 11.72 7.2 17.39 2.614.4 8.82 11.18 7.4 18.17 1.834.6 9.35 10.65 7.6 18.73 1.274.8 9.86 10.14 7.8 19.15 0.855.0 10.30 9.70 8.0 19.45 0.55Na2HPO4分子量141.98 0.2M溶液含28.40g/LNa2HPO42H2O分子量178.05 0.2M溶液含35.61g/LC6H8O7H2O分子量210.14 0.1M溶液含21.01g/L4.柠檬酸-氢氧化钠-盐酸缓冲液pH 钠离子浓度/M 柠檬酸C6H8O7H2O/g 氢氧化钠NaOH/g 浓盐酸HCl/ml 终体积/L2.2 0.20 210 84 160 103.1 0.20 210 83 116 103.3 0.20 210 83 106 104.3 0.20 210 83 45 105.3 0.35 245 144 68 105.8 0.45 285 186 105 106.5 0.38 266 156 126 10使用时可以每升中加入1g酚，若最后pH有变化，再用少量50%氢氧化钠溶液或浓盐酸调节，冰箱保存。5.柠檬酸-柠檬酸钠缓冲液（0.1M）pH 0.1M柠檬酸/ml 0.1M柠檬酸钠/ml pH 0.1M柠檬酸/ml 0.1M柠檬酸钠/ml3.0 18.6 1.4 5.0 8.2 11.81.甘氨酸-盐酸缓冲液（0.05M）X ml 0.2M甘氨酸 +Y ml 0.2M盐酸 再加水稀释至200mlpH X/ml Y/ml pH X/ml Y/ml2.2 50 44.0 3.0 50 11.42.4 50 32.4 3.2 50 8.22.6 50 24.2 3.4 50 6.42.8 50 16.8 3.6 50 5.0甘氨酸分子量75.07 0.2M甘氨酸溶液含15.01g/L 2.邻苯二甲酸-盐酸缓冲液（0.05M）X ml 0.2M邻苯二甲酸氢钾 +Y ml 0.2M盐酸 再加水稀释至200mlpH X Y pH X Y2.2 5 4.670 3.2 5 1.4702.4 5 3.960 3.4 5 0.9902.6 5 3.295 3.6 5 0.5972.8 5 2.642 3.8 5 0.2633.0 5 2.032 邻苯二甲酸氢钾分子量2.4.23 0.2M邻苯二甲酸氢钾溶液含40.85g/L3.磷酸氢二钠-柠檬酸缓冲液pH 0.2M Na2HPO4/ml 0.1M柠檬酸/ml pH 0.2M Na2HPO4/ml 0.1M柠檬酸/ml2.2 0.40 19.6 5.2 10.72 9.282.4 1.24 18.76 5.4 11.15 8.852.6 2.18 17.82 5.6 11.60 8.402.8 3.17 16.83 5.8 12.09 7.913.0 4.11 15.89 6.0 12.63 7.373.2 4.94 15.06 6.2 13.22 6.783.4 5.70 14.30 6.4 13.85 6.153.6 6.44 13.56 6.6 14.55 5.453.8 7.10 12.90 6.8 15.45 4.554.0 7.71 12.29 7.0 16.47 3.534.2 8.28 11.72 7.2 17.39 2.614.4 8.82 11.18 7.4 18.17 1.834.6 9.35 10.65 7.6 18.73 1.274.8 9.86 10.14 7.8 19.15 0.855.0 10.30 9.70 8.0 19.45 0.55Na2HPO4分子量141.98 0.2M溶液含28.40g/LNa2HPO42H2O分子量178.05 0.2M溶液含35.61g/LC6H8O7H2O分子量210.14 0.1M溶液含21.01g/L4.柠檬酸-氢氧化钠-盐酸缓冲液pH 钠离子浓度/M 柠檬酸C6H8O7H2O/g 氢氧化钠NaOH/g 浓盐酸HCl/ml 终体积/L2.2 0.20 210 84 160 103.1 0.20 210 83 116 103.3 0.20 210 83 106 104.3 0.20 210 83 45 105.3 0.35 245 144 68 105.8 0.45 285 186 105 106.5 0.38 266 156 126 10使用时可以每升中加入1g酚，若最后pH有变化，再用少量50%氢氧化钠溶液或浓盐酸调节，冰箱保存。5.柠檬酸-柠檬酸钠缓冲液（0.1M）pH 0.1M柠檬酸/ml 0.1M柠檬酸钠/ml pH 0.1M柠檬酸/ml 0.1M柠檬酸钠/ml3.0 18.6 1.4 5.0 8.2 11.83.2 17.2 2.8 5.2 7.3 12.73.4 16.0 4.0 5.4 6.4 13.63.6 14.9 5.1 5.6 5.5 14.53.8 14.0 6.0 5.8 4.7 15.34.0 13.1 6.9 6.0 3.8 16.24.2 12.3 7.7 6.2 2.8 17.24.4 11.4 8.6 6.4 2.0 18.04.6 10.3 9.7 6.6 104 18.64.8 9.2 10.8 C6H8O7H2O分子量210.14 0.1M溶液含21.01g/LNa3C6H5O72H2O分子量294.12 0.1M溶液含29.41g/L6.乙酸-乙酸钠缓冲液（0.2M）pH 0.2M NaAc/ml 0.2M HAC/ml pH 0.2M NaAc/ml 0.2M HAC/ml3.6 0.75 9.25 4.8 5.90 4.103.8 1.20 8.80 5.0 7.00 3.004.0 1.80 8.20 5.2 7.90 2.104.2 2.65 7.35 5.4 8.60 1.404.4 3.70 6.30 5.6 9.10 0.904.6 4.90 5.10 5.8 9.40 0.60NaAc分子量136.09 0.2M溶液为27.22g/L7.磷酸盐缓冲液(1)磷酸氢二钠-磷酸二氢钠缓冲液（0.2M）pH 0.2M Na2HPO4/ml 0.2M NaH2PO4/ml pH 0.2M Na2HPO4/ml 0.2M NaH2PO4/ml5.8 8.0 92.0 7.0 61.0 39.05.9 10.0 90.0 7.1 67.0 33.06.0 12.3 87.7 7.2 72.0 28.06.1 15.0 85.0 7.3 77.0 23.06.2 18.5 81.5 7.4 81.0 19.06.3 22.5 77.5 7.5 84.0 16.06.4 26.5 73.5 7.6 87.0 13.06.5 31.5 68.5 7.7 89.5 10.56.6 37.5 62.5 7.8 91.5 8.56.7 43.5 56.5 7.9 93.0 7.06.8 49.5 51.0 8.0 94.7 5.36.9 55.0 45.0 Na2HPO42H2O分子量178.05 0.2M溶液含35.61g/LNa2HPO412H2O分子量358.22 0.2M溶液含71.64g/LNaH2PO4H2O分子量138.01 0.2M溶液含27.6g/LNaH2PO42H2O分子量156.03 0.2M溶液含31.21g/L(2) 磷酸氢二钠-磷酸二氢钾缓冲液（1/15M）pH 1/15M Na2HPO4/ml 1/15M KH2PO4/ml pH 1/15M Na2HPO4/ml 1/15M KH2PO4/ml4.92 0.10 9.90 7.17 7.00 3.005.29 0.50 9.50 7.38 8.00 2.005.91 1.00 9.00 7.73 9.00 1.006.24 2.00 8.00 8.04 9.50 0.506.47 3.00 7.00 8.34 9.75 0.256.64 4.00 6.00 8.67 9.90 0.106.81 5.00 5.00 9.18 10.00 06.98 6.00 4.00 Na2HPO42H2O分子量178.05 1/15M溶液含35.61g/LKH2PO4分子量136.09 1/15M溶液含9.078g/L8.磷酸二氢钾-氢氧化钠缓冲液（0.05M）X ml 0.2M KH2PO4 +Y ml 0.2M NaOH 再加水稀释至20mlpH(20) X/ml Y/ml pH(20) X/ml Y/ml5.8 5 0.372 7.0 5 2.9636.0 5 0.570 7.2 5 3.5006.2 5 0.860 7.4 5 3.9506.4 5 1.260 7.6 5 4.2806.6 5 1.780 7.8 5 4.5206.8 5 2.365 8.0 5 4.6809.巴比妥钠-盐酸缓冲液（18）pH 0.04M巴比妥钠/ml 0.2M盐酸/ml pH 0.04M巴比妥钠/ml 0.2M盐酸/ml6.8 100 18.4 8.4 100 5.217.0 100 17.8 8.6 100 3.827.2 100 16.7 8.8 100 2.527.4 100 15.3 9.0 100 1.657.6 100 13.4 9.2 100 1.137.8 100 11.47 9.4 100 0.708.0 100 9.39 9.6 100 0.358.2 100 7.21 100 巴比妥钠分子量206.18 0.04M溶液为8.25g/L10.Tris-盐酸缓冲液50ml 0.1M三羟甲基氨基甲烷(Tris)溶液于X ml 0.1M盐酸混匀后，加水稀释至100mlpH X/ml pH X/ml7.1 45.7 8.1 26.27.2 44.7 8.2 22.97.3 43.4 8.3 19.97.4 42.0 8.4 17.27.5 40.3 8.5 14.77.6 38.5 8.6 12.47.7 36.6 8.7 10.37.8 34.5 8.8 8.57.9 32.0 8.9 7.08.0 29.2 三羟甲基氨基甲烷(Tris)分子量121.14 0.1M溶液为12.114g/LTris溶液可以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）pH 0.05M硼砂/ml 0.2M硼酸/ml pH 0.05M硼砂/ml 0.2M硼酸/ml7.4 1.0 9.0 8.2 3.5 6.57.6 1.5 8.5 8.4 4.5 5.57.8 2.0 8.0 8.7 6.0 4.08.0 3.0 7.0 9.0 8.0 2.0硼砂Na2B4O710H2O分子量381.43 0.05M(=0.2M硼酸根)溶液为19.07g/L硼酸H3BO3分子量61.84 0.2M溶液为12.37g/L硼砂易失去结晶水，必须在带塞的瓶中保存12.甘氨酸-氢氧化钠缓冲液（0.05M）X ml 0.2M甘氨酸 +Y ml 0.2M氢氧化钠 再加水稀释至200mlpH X/ml Y/ml pH X/ml Y/