折射率的温度校正及换算为可溶性固形物含量

折射率的温度校正及换算为可溶性固形物含量(补充件)如采用的折射仪不带有可溶性固形物百分数刻度，仪器校准和样液测定时，折射率的温度校正及换算为可溶性固形物含量的方法如下。A1用蒸馏水校准折射仪读数，在20°C时，折射率调至1.3330。温度在15—25C时，按表A1中的折射率校准。A2根据在20C时，按检测的样液折射率读数，由表A2查得可溶性固形物百分数。测定时温度不在20C，需按下式先校正为20C时的折射率：N20D=ntD+O.00013(t-20)式中t为测定时的摄氏度表A1纯水的折射率温度C折射率温度C折射率151.33339211.33290161.33332221.33281171.33334231.33272181.33316241.33263191.33307251.33253201.33299表A220°C时折射率与可溶性固形物换算表折可折可折可折可折可折可射溶射溶射溶射溶射溶射溶率性率性率性率性率性率性固固固固固固形形形形形形物物物物物物%%%%%%1.330.01.3514.1.3729.1.4043.1.4358.1.4772.3049 593 066 573 013 51.330.51.3515.1.3829.1.4044.1.4358.1.4773.3757 002 576 085 525 01.331.01.3515.1.3830.1.4044.1.4359.1.4743.4465 511 086 596 037 51.331.51.3516.1.3830.1.4045.1.4459.1.4774.5173 020 596 007 549 0

1.332.01.3516.1.3831.1.4145.1.4460.1.4774.598252900751806251.332.51.3517.1.3831.1.4146.1.4460.1.4775.679003851702957401.333.01.3517.1.3832.1.4146.1.4461.1.4775.739854702754108751.333.51.3618.1.3832.1.4141.1.4461.1.4776.810605653705359901.334.01.3618.1.3833.1.4147.1.4462.1.4876.88/1456504756401251.334.51.3619.1.3833.1.4148.1.4462.1.4877.952207455807552501.345.01.3619.1.3834.1.4148.1.4463.1.4877.033158306958603851.345.51.3620.1.3834.1.4149.1.4463.1.4878.113909357909755001.346.01.3620.1.3935.1.4149.1.4564.1.4878.184750208950906351.346.51.3621.1.3935.1.4250.1.4564.1.4870.255501150002157691.347.01.3621.1.3936.1.4250.1.4565.1.4879.33635200115320885

1.347.51.3622.1.3936.1.4251.1.4565.1.4980.417202952104450101.348.01.3622.1.3937.1.4251.1.4566.1.4980.488153903155501451.348.51.3623.1.3937.1.4252.1.4565.1.4981.568914954207052701.349.01.3623.1.3938.1.4252.1.4567.1.4981.649855805358154151.349.51.3724.1.3938.1.4253.1.4567.1.4982.710606856409355401.3410.1.3724.1.3939.1.4253.1.4668.1.4982.790155707550506751.3410.1.3725.1.3939.1.4254.1.4668.1.4983.8752308758501658001.3411.1.3725.1.3940.1.4254.1.4669.1.4983.9403159759642809351.3511.1.3726.1.4040.1.4355.1.4669.1.5084.0254000750703950701.3512.1.3726.1.4041.1.4355.1.4670.1.5084.1004951601855102051.3512.1.3727.1.4041.1.4356.1.4670.1.5085.18558026529063533013.TOC\o"1-5"\