The researchers used water and an ultrasonic extraction process, followed by gas chromatography-mass spectrometry to quantify the amount of cocaine in more than 230 bills collected in 17 cities.
研究人员从17个城市收集到230张纸币样本，并使用水和超声波提取方法，再加上气相色谱分析-质谱法对样本进行测试。
A solvent flotation-gas chromatography for the determination of sodium stearate in sodium aluminate solution in aluminium hydroxide production by the bayer process was studied.
研究了拜尔法生产氢氧化铝过程中，用溶剂浮选-气相色谱法测定结晶助剂有效成分硬脂酸钠的方法。
The volatile organic compounds (VOCs) produced in the laser-sculpture process of bicolor board were studied using cold trap condensation-gas chromatography-mass spectrometry.
研究了冷阱浓缩气相色谱-质谱法检测双色板在激光工艺雕刻过程产生的挥发性有机污染物的组成。
应用推荐