毛细管柱气相色谱法测定环境空气中的樟脑

采用毛细管柱气相色谱氢火焰离子化检测器测定环境空气中的樟脑,选择硅胶为吸附剂,甲醇/丙酮混合溶剂(体积比90∶10)为解析剂.方法在0.544 mg/L～109 mg/L范围内线性良好,检出限为0.06 mg/L,当采样体积为20 L时,最低检出质量浓度为0.003 mg/m3,标准溶液平行测定的RSD≤3.8％,空白...

Camphor Determination in Ambient Air by Capillary Gas Chromatography

Camphor in the air was determined by gas chromatograph of capillary column with hydrogen flame ionization detector, using silica gel as adsorbent, and desorbed by mixed solvent V（ methanol）：V（acetone） = 90： 10]. Results of the method showed that good linearity was obtained in range from 0. 544 mg/L to 109 mg/L, detection limit 0.06 mg/L, the lowest detection concentration 0. 003 mg/m^3 at sampling 20 liters air, RSD of standard solutions〈3.8% , spiked recovery of blank from 95.4% to 101%.