①若测定吸光值超出标准线性吸光值范围:高于最高值建议将待测样本适当稀释后再进行测定;低于最低值建议适当增加样本量后再进行测定,计算时相应修改;
②浓硫酸具有强腐蚀性,请做好防护措施并谨慎操作;
③待测样本稀释倍数可参照公式计算
最大稀释倍数(DMax)=74"×W×A"
最小稀释倍数(DMin)=7.4"×W×A"
注释:W:样品质量,g;A:预估淀粉含量,mg/g;例:预估淀粉含量为400 mg/g(40%),称取0.05 g样本进行淀粉提取,DMin=148,DMax=1480,即待测样本稀释倍数可选择150-1400倍。
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