本标准适用于恶臭污染源排气及厂界环境空气中三甲胺的测定.当采样体积为10L时,方法*低检出浓度为2.5<上标-3>×10mg/m<上标3>. 本标准测定以气体状态存在的三甲胺. 样品中的氨,甲胺,乙胺,二甲胺等胺类化合物在本方法选定的色谱条件下,均不干扰三甲胺的测定.

浩瀚色谱（山东）应用技术开发有限公司研究了三甲胺的测定方法和采样方法 ,用碱处理色谱柱及固体吸附剂 ,减少吸附 ,是本方法的特点。本法对三甲胺的检测限为 6 35 μg/ml;测定精密度用相对标准偏差表示为 4 5 9%～ 6 14% ;解吸效率为 93 9%～ 97 4% ;样品可在 10℃冰箱中保存 7天 ,解吸效率大于 90 %以上 ;当浓度为 140～2 2 3mg/m3时 ,采样效率大于 96 % ;2 0 0mg硅胶穿透容量为 2 38mg;应用本方法测定空气中三甲胺 ,灵敏度高 ,重现性好 ,简便易行 ,本研究符合监测规范化方法要求。

名称：石英毛细管柱
固定相：二甲基聚硅氧烷（需碱性脱活处理）
规格：30m*0.32mm*5um
型号：HH-Tamine30
应用：  环境空气和废气 三甲胺的测定 溶液吸收-顶空 气相色谱法 
 
This standard applies to the determination of trimethylamine in the exhaust of malodorous pollution sources and the ambient air at the factory boundary. When the sampling volume is 10L, the minimum detection concentration of the method is 2.5<superscript-3>×10mg/m<superscript 3>. Standard determination of trimethylamine in a gaseous state. Amine compounds such as ammonia, methylamine, ethylamine, and dimethylamine in the sample do not interfere with the determination of trimethylamine under the chromatographic conditions selected by this method.

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. has studied the determination method and sampling method of trimethylamine. Treating the chromatographic column and solid adsorbent with alkali to reduce adsorption is the characteristic of this method. The detection limit of this method for trimethylamine is 6 35 μg/ml; the precision of the determination is 459%～614% in terms of relative standard deviation; the desorption efficiency is 93.9%～97 4%; the sample can be stored in a refrigerator at 10℃ When stored in medium for 7 days, the desorption efficiency is more than 90%; when the concentration is 140～223mg/m3, the sampling efficiency is more than 96%; the 200mg silica gel penetration capacity is 238mg; this method is used to determine the trimethylamine in the air, High sensitivity, good reproducibility, simple and easy to implement, this study meets the requirements of standardized monitoring methods.

Name: Quartz Capillary Column
Stationary phase: dimethyl polysiloxane (requires alkaline deactivation treatment)
Specification: 30m*0.32mm*5um
Model: HH-Tamine30
Application: Determination of Ambient Air and Waste Gas Trimethylamine Solution Absorption-Headspace Gas Chromatography