亚硝胺是公认致癌物。氟乐灵生产中经过硝化、胺解等过程,产品中产生微量亚硝胺已被检测确认。分析亚硝胺的方法中,气相色谱法大都采用高灵敏度的热能分析器检测,或将亚硝胺转化、浓集,再用电子捕获检测器测定。根据我们的情况,采用氢焰检测,将氟乐灵产品用二氯甲烷溶解后直接进样,最低检出浓度为1.4～1.5ppm(二正丙基亚硝胺),重现性较好。 Nitrosamines are recognized as carcinogens. Trifluralin production through the nitrification, amine hydrolysis process, trace nitrosamines have been detected in the product to confirm. Analysis of nitrosamines in the method, most of the gas chromatography using high sensitivity thermal analyzer to detect, or nitrosamines transformation, concentration, and then electron capture detector determination. According to our situation, hydrogen flame detection, the trifluralin products dissolved in dichloromethane directly after injection, the minimum detectable concentration of 1.4 ~ 1.5ppm (di-n-propyl nitrosamines), better reproducibility.