阿贝折光仪的校正.doc

折光仪的校正1折光仪的校正1.1将折光仪与恒温水浴锅连接，调节水温，使折光仪的棱镜恒定在20。1.2打开折光以棱镜,用以蒸馏水润湿的脱脂棉小心擦净,将滴蒸馏水滴于镜面中心(不得有气泡),迅速闭合棱镜。13调节小反光镜及大反光镜，使目镜的视野明亮。1.4旋转目镜与色散补偿器旋纽，使视野的明暗交界线清晰。再转动补偿器旋纽，使明暗分界线对准十字交叉处，在20时，从目镜中读取折光率应为1.3330。入折光率不符，再用附件方孔调节扳手转动示值调节螺丝，直至折光率为1.3330。如无恒温水浴，蒸馏水不同温度的折光率可按表1校正。测定样品时不得再次转动示值调节螺丝2不同温度下蒸馏水的折光率见表1温度折光率温度折光率101.333371261.33242111.33365271.33231121.333592281.33220131.33353291.33203141.33346301.33196151.33339321.33164161.33324341.33136171.33320361.33107181.33316381.33079191.33307401.33051201.33299421.33023211.33290441.32992221.33281461.32959231.33272481.32927241.33263501.32894251.33253521.32860 在波长下，蔗糖（干物质）折光计测定的温度校正值（20）温度蔗糖(干物质）%0510152025303540455055606570758085从固形物中减去150.290.310.320.330.340.350.360.370.370.380.380.380.380.380.380.380.370.37160.240.250.360.270.280.280.290.300.300.300.310.310.310.310.310.300.300.30170.180.190.200.200.210.210.220.220.230.230.230.230.230.230.230.230.230.22180.120.130.130.140.140.140.150.150.150.150.150.150.150.150.150.150.150.15190.060.060.070.070.070.070.070.080.080.080.080.080.080.080.080.080.080.0720加于测定值210.060.070.070.070.070.070.080.080.080.080.080.080.080.080.080.080.080.07220.130.140.140.140.150.150.150.150.160.160.160.160.160.160.150.150.150.15230.200.210.210.220.220.230.230.230.230.240.240.240.240.230.230.230.230.22240.270.280.290.290.300.300.310.310.310.320.320.320.320.310.310.310.300.30250.340.350.360.370.380.380.390.390400.400.400.400.400.390.390.390.380.37260.420.430.440.450.460.460.470.470.480.480.480.480.480.470.470.460.460.45270.500.510.520.530.540.550.550.560.560.560.560.560.560.550.550.540.530.52280.580.590.600.610.620.630.640.640.640.650.650.640.640.640.630.620.610.60290.660.670.680.690.700.710.720.730.730.730.730.730.720.720.710.700.690.68300.740.750.770.780.790.800.810.810.810.820.810.810.810.800.790.780.770.75310.830.840.850.870.880.890.890.900.900.900.900.900.890.880.870.860.840.83320.910.930.940.950.960.970.980.990.990.990.990.980.970.960.950.940.920.90331.001.021.031.041.051.061.071.081.081.081.071.071.061.051.031.021.000.98341.101.111.121.131.151.151.161.171.171.171.161.151.141.131.121.101.081.06351.191.201.221.231.241.251.251.261.261.251.251.241.231.211.201.181.161.13361.291.301.311.321.331.341.351.351.351.351.341.331.321.301.281.261.241.21371.381.401.411.421.431.441.441.441.441.441.431.421.401.381.361.341.321.29381.481.501.511.521.531.541.541.531.531.531.521.511.491.471.451.421.391.36391.591.601.611.621.621