二次热解吸-气相色谱法测定工作场所空气中苯系物
|
摘要
为了建立二次热解吸-气相色谱法测定工作场所空气中苯系物,采用Tenax-TA解析管吸附采集样品后,经热脱附仪二次热解吸-冷阱捕集,气相色谱-氢火焰离子化检测器(FID)分离检测,标准曲线法定量.结果显示,苯系物在0.50~50μg/mL的浓度范围内与峰面积呈良好的线性关系,相关系数均大于0.999 0.其检出限为:0.002~0.03μg/mL,最低检出浓度为0.013~0.20μg/m~3(以采集1.5 L空气样品计),平均加标回收率在97.53%~100.4%之间,相对标准偏差(RSD)为1.0%~3.2%之间.该法操作简单、快速灵敏、准确可靠,适用于工作场所空气中低浓度苯系物的分离检测.
We established a method for the determination of benzene series in workplace air by two stage therm aldesorption gas chromatography. The air sample was collected with Tenax-TA and was trapped by two stage therm aldesorption-cold trap. After separating with the flame ionization detector(FID)-gas chromatography,the quantitative was determined by standard curve. We found the concentrations of benzene series presented a good linea rrelationship with peak area when they were within 0.50-50 μg/m L,and the correlation coefficients of the standard curve were all above 0.999 0. The results showed that the detection limits of the method were 0.002-0.03 μg/m L,and the minimum detectable concentrations were 0.013-0.20 μg/m~3(sample volume was 1.5 L). The recovery rates of benzene series were in the range of 97.53%-100.4% and the relevant standard deviations(RSD)were in the range of 1.0%-3.2%. The method is simple,fast,accurate and reliable,and is suitable for the separation and detection of low concentration of benzene series in workplace air.
We established a method for the determination of benzene series in workplace air by two stage therm aldesorption gas chromatography. The air sample was collected with Tenax-TA and was trapped by two stage therm aldesorption-cold trap. After separating with the flame ionization detector(FID)-gas chromatography,the quantitative was determined by standard curve. We found the concentrations of benzene series presented a good linea rrelationship with peak area when they were within 0.50-50 μg/m L,and the correlation coefficients of the standard curve were all above 0.999 0. The results showed that the detection limits of the method were 0.002-0.03 μg/m L,and the minimum detectable concentrations were 0.013-0.20 μg/m~3(sample volume was 1.5 L). The recovery rates of benzene series were in the range of 97.53%-100.4% and the relevant standard deviations(RSD)were in the range of 1.0%-3.2%. The method is simple,fast,accurate and reliable,and is suitable for the separation and detection of low concentration of benzene series in workplace air.
引文
[1]李凤苏.苯及苯系物对作业人员健康状况的影响[J].职业与健康,2008,24(17):56-59.
[2]牛慧敏,涂建军,姚作林,等.中国城市空气质量时空分布特征[J].河南科学,2016,34(8):1318-1321.
[3]中华人民共和国卫生部.工作场所空气有毒物质测定(芳香烃类化合物):GBZ/T 160.42—2007[S].北京:人民卫生出版社,2007.
[4]周建钟,周钰芳,任媛媛,等.溶剂解析气相色谱法测定室内空气中的苯和苯系物[J].湖南理工学院学报(自然科学版),2007,20(2):57-60.
[5]许涛.苯系物测定方法的研究[J].四川环境,2003,22(4):44-48.
[6]娄大伟,孙秀云,任红,等.针式萃取-气相色谱联用测定加油站附近空气中苯系物[J].理化检验(化学分册),2012,48(5):521-523.
[7]孙谦,范军,邓晓丽,等.热脱附-GCMS法测定空气中的苯系物[J].环境化学,2013(8):1596-1597.
[8]陈慧,戴晖.空气中苯系物的GC-MS/SIM定量分析方法研究[J].理化检验(化学分册),2003,39(4):212-214.
[9]赵灿方,李中贤,李琳,等.高效液相色谱法快速测定空气中苯并[α]芘[J].河南科学,2013,31(12):2146-2148.
[10]何彩,陈卫.空气中正己烷、苯系物同时测定的热解吸气相色谱法[J].职业与健康,2006,22(7):494-495.
[11]植深晓,潘锦.气相色谱法测定空气中的苯系物[J].中山大学研究生学刊(自然科学、医学版),2014,35(1):45-48.
[12]职克利.常温捕集-热解析-气相色谱法测定空气中苯系物含量的探讨[J].河南化工,2006,23(5):40-42.
[13]张晓晖.二次热解吸直接进气相色谱法测定空气中苯系物[J].环境科学与管理,2010,35(8):87-89.
[14]胡红梅,胡彬彬,李芳,等.气相色谱法同时测定工作场所中异亚丙基丙酮和苯系物[J].中国卫生检验杂志,2012,22(9):2063-2065.
[15]徐东群,刘晨明,张爱军,等.Tenax TA吸附/二次热解吸/毛细管气相色谱法测定环境空气中苯系物的方法[J].卫生研究,2004,33(4):425-427.
[16]何小军,杨玉华,梅爱华,等.用Tenax-TA吸附剂检测空气中的苯及TVOC的方法研究[J].工程质量,2011,29(4):55-58.
[17]郭莉华,何新星,丁军平,等.Tenax-TA吸附联合气相色谱-质谱仪测定密闭环境苯系物[J].航天医学与医学工程,2012,25(2):144-146.
[18]朱小红,潘红,马二琴,等.吸附剂Tenax-TA和活性炭对空气中苯的吸附性能比较[J].化学建材,2006,22(5):12-14.
[19]黄翠华,梅爱华,何小军,等.Tenax-TA吸附剂检测室内空气中苯浓度的影响因素分析[J].工程质量,2011,29(2):78-80.
[20]张敬华,田新峰.工作场所中苯系物的热解吸气相色谱法测定[J].广东化工,2016,43(10):194,178.
[21]陈晓峰.二次热解析气相色谱法测定塑料玩具厂界空气中TVOC[J].能源与环境,2015(4):74-77.
[22]冯丽,贾瑜玲,翟莉,等.气相色谱法测定空气中苯系物的热解吸和溶剂解吸比对研究[J].中国测试技术,2005,31(6):125-129.
[2]牛慧敏,涂建军,姚作林,等.中国城市空气质量时空分布特征[J].河南科学,2016,34(8):1318-1321.
[3]中华人民共和国卫生部.工作场所空气有毒物质测定(芳香烃类化合物):GBZ/T 160.42—2007[S].北京:人民卫生出版社,2007.
[4]周建钟,周钰芳,任媛媛,等.溶剂解析气相色谱法测定室内空气中的苯和苯系物[J].湖南理工学院学报(自然科学版),2007,20(2):57-60.
[5]许涛.苯系物测定方法的研究[J].四川环境,2003,22(4):44-48.
[6]娄大伟,孙秀云,任红,等.针式萃取-气相色谱联用测定加油站附近空气中苯系物[J].理化检验(化学分册),2012,48(5):521-523.
[7]孙谦,范军,邓晓丽,等.热脱附-GCMS法测定空气中的苯系物[J].环境化学,2013(8):1596-1597.
[8]陈慧,戴晖.空气中苯系物的GC-MS/SIM定量分析方法研究[J].理化检验(化学分册),2003,39(4):212-214.
[9]赵灿方,李中贤,李琳,等.高效液相色谱法快速测定空气中苯并[α]芘[J].河南科学,2013,31(12):2146-2148.
[10]何彩,陈卫.空气中正己烷、苯系物同时测定的热解吸气相色谱法[J].职业与健康,2006,22(7):494-495.
[11]植深晓,潘锦.气相色谱法测定空气中的苯系物[J].中山大学研究生学刊(自然科学、医学版),2014,35(1):45-48.
[12]职克利.常温捕集-热解析-气相色谱法测定空气中苯系物含量的探讨[J].河南化工,2006,23(5):40-42.
[13]张晓晖.二次热解吸直接进气相色谱法测定空气中苯系物[J].环境科学与管理,2010,35(8):87-89.
[14]胡红梅,胡彬彬,李芳,等.气相色谱法同时测定工作场所中异亚丙基丙酮和苯系物[J].中国卫生检验杂志,2012,22(9):2063-2065.
[15]徐东群,刘晨明,张爱军,等.Tenax TA吸附/二次热解吸/毛细管气相色谱法测定环境空气中苯系物的方法[J].卫生研究,2004,33(4):425-427.
[16]何小军,杨玉华,梅爱华,等.用Tenax-TA吸附剂检测空气中的苯及TVOC的方法研究[J].工程质量,2011,29(4):55-58.
[17]郭莉华,何新星,丁军平,等.Tenax-TA吸附联合气相色谱-质谱仪测定密闭环境苯系物[J].航天医学与医学工程,2012,25(2):144-146.
[18]朱小红,潘红,马二琴,等.吸附剂Tenax-TA和活性炭对空气中苯的吸附性能比较[J].化学建材,2006,22(5):12-14.
[19]黄翠华,梅爱华,何小军,等.Tenax-TA吸附剂检测室内空气中苯浓度的影响因素分析[J].工程质量,2011,29(2):78-80.
[20]张敬华,田新峰.工作场所中苯系物的热解吸气相色谱法测定[J].广东化工,2016,43(10):194,178.
[21]陈晓峰.二次热解析气相色谱法测定塑料玩具厂界空气中TVOC[J].能源与环境,2015(4):74-77.
[22]冯丽,贾瑜玲,翟莉,等.气相色谱法测定空气中苯系物的热解吸和溶剂解吸比对研究[J].中国测试技术,2005,31(6):125-129.