工作场所空气中乙醛、丁醛和异丁醛测定方法改进  

Improvement of detection method for acetaldehyde, butyraldehyde and isobutyraldehyde in workplace air

作　　者：陈冠林 何嘉恒[2] 赵颖莹 骆春霞 许志恒 霍劭欣 陈松根 CHEN Guanlin;HE Jiaheng;ZHAO Yingying;LUO Chunxia;XU Zhiheng;HUO Shaoxin;CHEN Songgen(Foshan institute of occupational disease prevention and control,Foshan,Guangdong 528000,China;不详)

机构地区：[1]佛山市职业病防治所,广东佛山528000 [2]广东省职业病防治院,广东省职业病防治重点实验室,广东广州510300

出　　处：《中国职业医学》2020年第5期578-581,共4页China Occupational Medicine

基　　金：广东省医学科学技术研究基金(A2015617);佛山市医学科研项目(20200399);佛山市医学类科技攻关项目(1920001000268)。

摘　　要：目的改进工作场所空气中乙醛、丁醛和异丁醛的标准测定方法。方法以硅胶管采集工作场所空气中的乙醛、丁醛和异丁醛,用体积分数为45.0%乙醇解吸,经毛细管色谱柱分离,火焰离子化检测器检测。结果本方法检测乙醛、丁醛和异丁醛的线性范围分别为1.57~1 568.00、1.60~1 600.00和1.59~1 588.00 mg/L,相关系数均大于0.999,检出限分别为0.52、0.46和0.54 mg/L,解吸效率为91.0%~103.0%,批内相对标准偏差(RSD)为0.7%~1.7%,批间RSD为2.0%~3.7%;室温下样品至少可以保存10 d。结论本方法可于工作场所空气中乙醛、丁醛和异丁醛的同时测定。Objective To improve the standard detection method for acetaldehyde, butyraldehyde and isobutyraldehyde in the air of workplace. Methods Acetaldehyde, butyraldehyde and isobutyraldehyde in the air of workplace were collected using silica gel tube, desorbed with 45.0% ethanol, separated by a capillary column and detected by a flame ionization detector. Results The linear range of this method for detecting acetaldehyde, butyraldehyde and isobutyraldehyde were 1.57-1 568.00, 1.60-1 600.00 and 1.59-1 588.00 mg/L, respectively. All the correlation coefficients were greater than 0.999. The detection limits were 0.52, 0.46 and 0.54 mg/L, respectively. The desorption efficiency was 91.0%-103.0%. The within-run relative standard deviation(RSD) was 0.7%-1.7%.The between-run RSD was 2.0%-3.7%. The samples could be stored for at least 10 days at room temperature. Conclusion This method can be used for simultaneous detection of acetaldehyde, butyraldehyde and isobutyraldehyde in the air of workplace.

关 键 词：工作场所 空气 乙醛 丁醛 异丁醛 气相色谱 溶剂解吸 

分 类 号：R134.4[医药卫生—劳动卫生]