顶空/气相色谱-质谱法测定圆珠笔中8种挥发性苯系物

李长于; 廖上富; 胡丹; 叶涛

doi:doi：10.3969/j.issn.1004-4957.2019.06.018

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顶空/气相色谱-质谱法测定圆珠笔中8种挥发性苯系物

- 顶空/气相色谱-质谱法测定圆珠笔中8种挥发性苯系物
- Determination of Eight Volatile Benzene Homologues in Ball-point Pen by Headspace Gas Chromatography-Mass Spectrometry
- 分析测试学报 2019年38卷第6期页码：739-743
- 作者机构：
  
  浙江方圆检测集团股份有限公司
- 作者简介：
- 基金信息：
  
  浙江省质量技术监督系统科研计划项目资助(20180346)
- DOI：doi：10.3969/j.issn.1004-4957.2019.06.018
  中图分类号：
- 纸质出版：2019
- 稿件说明：
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李长于, 廖上富, 胡丹, 叶涛. 顶空/气相色谱-质谱法测定圆珠笔中8种挥发性苯系物[J]. 分析测试学报, 2019,38(6):739-743.

李长于, 廖上富, 胡丹, 叶涛. Determination of Eight Volatile Benzene Homologues in Ball-point Pen by Headspace Gas Chromatography-Mass Spectrometry[J]. 2019, 38(6): 739-743.
李长于, 廖上富, 胡丹, 叶涛. 顶空/气相色谱-质谱法测定圆珠笔中8种挥发性苯系物[J]. 分析测试学报, 2019,38(6):739-743. DOI： doi：10.3969/j.issn.1004-4957.2019.06.018.

李长于, 廖上富, 胡丹, 叶涛. Determination of Eight Volatile Benzene Homologues in Ball-point Pen by Headspace Gas Chromatography-Mass Spectrometry[J]. 2019, 38(6): 739-743. DOI： doi：10.3969/j.issn.1004-4957.2019.06.018.

摘要

建立了顶空/气相色谱-质谱法测定圆珠笔中8种挥发性苯系物(苯、甲苯、乙苯、对二甲苯、间二甲苯、异丙苯、邻二甲苯和苯乙烯)含量的分析方法。选择顶空平衡温度和时间分别为70 ℃和40 min，以HP-INNOWax色谱柱(60 m×320 μm×0.25 μm)分离，采用选择离子监测模式（SIM）检测，外标法定量。结果显示，8种苯系物在0.005~0.5 mg/L质量浓度范围内均与对应的峰面积呈良好的线性关系(r2>0.999)

检出限(S/N=3)为0.01~0.02 mg/kg，加标回收率为86.0%~104%，相对标准偏差(RSD)为2.3%~9.6%。该方法操作简单，快速，且灵敏度高，适用于圆珠笔中挥发性苯系物的快速检测。

Abstract

A method of headspace gas chromatography-mass spectrometry(HS/GC-MS) was developed for the determination of eight volatile benzene homologues

i.e.benzene

toluene

ethylbenzene

p-xylene

m-xylene

isopropylbenzene

o-xylene and styrene in ball-point pen.The equilibrium temperature and time for headspace sampler were set at 70 ℃ and 40 min

respectively.The analytes were separated on an HP-INNOWax column(60 m×320 μm×0.25 μm)

then detected in selected-ion monitoring mode and quantified by external standard method.Results showed that the standard curves for eight benzene homologues were linear over the concentration range of 0.005-0.05 mg/L with the linear correlation coefficients greater than 0.999.The detection limits of the method(S/N=3) were in the range of 0.01-0.02 mg/kg.The spiked recoveries ranged from 86.0% to 104% with RSDs of 2.3%-9.6%.The method is simple

rapid and high sensitive

and is suitable for the determination of volatile benzene homologues in ball-point pen.

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