Optimization of Static Head-Space Gas Chromatography - Mass Spectrometry-Conditions for the Determination of Benzene, Toluene, Ethyl benzene, Xylene, and Styrene in Model Solutions

Q3 Environmental Science

Ekoloji Pub Date : 2013-12-24 DOI:10.5053/EKOLOJI.2013.899

Ozlem Yilmazcan, E. Özer, B. Izgi, Ş. Gucer

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引用次数: 9

Abstract

A method was developed and validated for the analysis of benzene, toluene, ethylbenzene, xylene (BTEX), and styrene in sea water samples using gas chromatography-mass spectrometry (GC-MS) with static headspace extraction. To carefully characterize the performance of this method, several factors affecting the parameters were studied in detail, such as the heating procedure, loop filling time, equilibrium temperature, the sample dilution ratio, equilibrium, and injection times. The optimized conditions are as follows: 1)the heating procedure, 50°C for 4 min, then increased to 170°C at 15°C min-1, 2) equilibrium temperature, 60°C, 3) equilibrium time, 5 min, and 4) injection time 0.5 min. Under the optimized conditions, the linear equations were obtained in the concentration range of 10 - 50 μg L-1 with good correlation coefficient values. The limits of detection were 1.8 - 3.3 μg L -1 . The recoveries at the spiked level of 20 μg L -1 BTEX and styrene ranged from 97% - 103% with the relative standard deviations were (RSD, n=3) 1.0% - 7.6%.

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静态顶空气相色谱-质谱-模型溶液中苯、甲苯、乙苯、二甲苯和苯乙烯测定条件的优化

建立了静态顶空萃取气相色谱-质谱联用分析海水样品中苯、甲苯、乙苯、二甲苯(BTEX)和苯乙烯的方法，并进行了验证。为了仔细表征该方法的性能，详细研究了影响该方法参数的几个因素，如加热程序、循环填充时间、平衡温度、样品稀释比、平衡和进样次数。优化条件为:1)加热过程，50℃加热4 min, 15℃加热至170℃，min-1, 2)平衡温度，60℃，3)平衡时间，5 min, 4)注射时间0.5 min。在优化条件下，在10 ~ 50 μg L-1的浓度范围内得到线性方程，相关系数值较好。检出限为1.8 ~ 3.3 μg L -1。在20 μg L -1 BTEX和苯乙烯加标水平下，加标回收率为97% ~ 103%，相对标准偏差(RSD, n=3)为1.0% ~ 7.6%。

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来源期刊

Ekoloji 环境科学-生态学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Cessation. Ekoloji is an international journal that focuses on papers that report results from original research on all disciplines engaged in the field of environmental research. We welcome articles that cover the entire spectrum of environmental problems and environmental pollutants, whether chemical, biological or physical. Its coverage extends to all environmentally related issues: air and water pollution, solid waste, noise, recycling, natural resources, ecology and environmental protection. It includes articles on basic and applied environmental pollution research, including environmental engineering and environmental health. All types of pollution are covered, including atmospheric pollutants, detergents, fertilizers, industrial effluents, metals, mining wastes, oil, pesticides, plastics, radioactive materials and sewage. It also includes research papers on ecological and environmental issues such as climate change, biodiversity. The primary criteria for publication are scientific quality and ecological/environmental significance. The journal will be read and contributed to by biologists, applied ecologists, environmental scientists, natural resource specialists, environmental engineers, environmental health specialists, agro-ecologists, veterinaries, agricultural engineers, landscape planners and designers. The journal welcomes full "research papers" and short "research notes", only in the English language.