植物对甲醛吸收的气相色谱研究

The Determination of Formaldehyde Absorbing of Ornamental Plants by Gas Chromatography

为了比较几种常见居室观赏性植物对室内甲醛的吸收效果,本文采用定时抽取放有植物的密闭箱内气体,以蒸馏水吸收,直接进样气相色谱法测定甲醛浓度.结果显示甲醛的浓度在0.2～1.0μg/mL范围内,线性关系良好,回归方程y=0.14261x-0.14711,(r=0.99657,n=6),检测限为0.053μg/mL;样品分析的精密度试验,相对标准偏差为1.27%.可见,以蒸馏水直接进样气相色谱的方法测定植物对甲醛吸收准确、简便.植物对甲醛吸收能力为:芦荟>虎尾兰>仙人掌>玉树.

Objective： study the different ornamental plants abilities that absorbing formaldehyde indoor. Methods： Formaldehyde is collected by distilled water and injected into the capillary directly then through FID to be detected. Results： the faction of the precision line was y = 0. 14261 x -0. 14711 , （ r = 0.99657, n = 6 methods linear range between 0.2 - 1.0 μg/ml ） which showed that the detection limit of this method for formaldehyde was 0. 01 mg/m3 （ indoor air ） ; the RDS was 1.27%. Conclusion： The method was simple ,rapid and reliable for the determination of formaldehyde and the purification allilities of four species were identified from strong to weak ： Alor vera var 〉 Sansevieria trifasciata 〉 chinensis 〉 tamaki.