【摘 要】
:
建立了高效液相色谱(HPLC)测定烟用添加剂热裂解产物中苯酚含量的分析方法.样品经热裂解仪裂解后,其热裂解产物用1%的乙酸水溶液各2 mL于室温下分两级捕集吸收,把2份吸收液混
【机 构】
:
云南烟草科学研究院烟草添加剂安全性研究与测试中心,
论文部分内容阅读
建立了高效液相色谱(HPLC)测定烟用添加剂热裂解产物中苯酚含量的分析方法.样品经热裂解仪裂解后,其热裂解产物用1%的乙酸水溶液各2 mL于室温下分两级捕集吸收,把2份吸收液混合均匀后,经C18色谱柱分离,采用荧光检测器(271 nm)检测,外标法定量.在0.2~10.0μg/mL范围内,苯酚的峰面积与其质量浓度间呈良好的线性关系,相关系数为0.999 9.在0.3,1.0,3.0μg/mL添加水平下的加标回收率为81.7%~96.7%,相对标准偏差(RSD)为3.86%~12.71%.
A high performance liquid chromatography (HPLC) was developed for the determination of phenol content in the pyrolyzed products of cigarette additives.The pyrolysis products were separated by 2 mL of 1% acetic acid in 2 mL After collecting and absorbing, the two absorbents were mixed uniformly and separated by C18 column, detected by fluorescence detector (271 nm) and quantified by external standard method.The peak area of phenol in the range of 0.2 ~ 10.0 μg / mL was compared with its mass The correlation coefficient was 0.999 9. The recoveries of spiked samples at the spiked levels of 0.3, 1.0 and 3.0 μg / mL ranged from 81.7% to 96.7% and the relative standard deviations (RSDs) ranged from 3.86% to 12.71% .
其他文献
复发性阿夫他口炎(Recurrent aphthous stomatitis简称RAS)是口腔粘膜最常见的疾病之一。本文的目的是描述它的临床特点,讨论其鉴别诊断和复习有关免疫发病机理的研究。RAS
中毒性耳聋为第八对颅神经遭受毒素损害所致。毒素可分为外来与内生两种。外来毒素对内耳有损害作用者称为耳毒类,如抗菌素、奎宁、水杨酸盐、磺胺类药、利尿酸、利尿灵(呋
目的:建立奶粉和液态奶中三聚氰酸的液相色谱-串联质谱检测方法(LC-MS/MS)。方法:样品加水混匀后加乙腈超声波提取,经固相萃取柱净化,采用亲水作用色谱柱分离,在电喷雾负电离
心血管疾病严重地威胁着人类的健康。在美国,约有50%的老年人死于此类疾病。西欧各国及采用欧美饮食方式的国家,心血管疾病的发病率及死亡率也相当高。在我国及其他发展中国
前置胎盘孕期无阴道出血2例报告洛阳市妇幼保健院(471000)穆青云,李凤巧妊娠晚期阴道大出血的原因,多由于前置胎盘所引起,其典型症状为妊娠28周以后无诱因无痛性反复阴道出血。但是,据有关资
The role of Ni(NO3)2 in the preparation of a magnetic activated carbon is reported in this paper.Magnetic coal-based activated carbons(MCAC) were prepared from
本文介绍了测定尿白细胞排泄率的方法并报告了53名正常人和33名泌尿系疾病患者白天12小时内的尿白细胞排泄率。通过分析认为,正常排泄率在男性不超过7万/小时,女性不超过14万
采用彩色多普勒超声对20例正常人和26例滋养细胞肿瘤患者子宫肌层血流情况进行观察,滋养细胞肿瘤患者中良性组(良性葡萄胎)11例,恶性组15例(侵蚀性葡萄胎8例,绒癌7例)。结果发现:正常人和良性组
“华南市场因为历史形成的消费惯性和本土汽车厂商的强势,使得任何一个其他的厂家都必须面对强大的竞争。但是我们正试图在一些地区取得突破性的进展。
”The South China m
A novel and efficient method was developed for the synthesis of diarylpyrazole derivatives as cannabinoid CB1 receptor antagonist via four step reactions. The k