Glyoxal is prepared with waste liquid propellant HNO3-27S and ethanal.
利用报废的液体推进剂硝酸- 27s和乙醛制备乙二醛。
Methods: To prepare food sample in HNO3-H2O2 solutions and determine the sample.
方法：将食品样品以HNO3 - H2O2进行前处理，样液用铝的试剂盒法进行测定。
This paper described the modification of carbon nanotube (CNT) by treating with concentrated HNO3.
采用浓hno3对碳纳米管(CNT)进行了表面修饰。
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