Analysis of tert-Butanol, Methyl tert-Butyl Ether, Benzene, Toluene, Ethylbenzene and Xylene in Ground Water by Headspace Gas Chromatography-Mass Spectrometry

Abstract

Methyl tert-butyl ether (MTBE) is added to gasoline to enhance the octane number of gasoline, tert-butyl alcohol (TBA) is major degradation intermediate of MTBE in environment, and benzene, toluene, ethyl benzene and xylene (BTEX) are also major constituents of gasoline. In this study, a simplified headspace analysis method was adapted for simultaneous determination of MTBE, TBA and BTEX in ground water samples. The sample 5.0 mL and 2 g NaCl were placed in a 10 mL vial and the solution was spiked with fluorobenzene as an internal standard and sealed with a cap.

Suda Uçucu Aromatik Hidrokarbonların (UAH’lar) Hassas ve Doğru Analizi için Gaz Kromatografisi Yöntemi Doğrulama Çalışması

“…Therefore, the precision results of this method ( Table 5 and Table 6) conform to the values given in [25]. Besides, the authors [24,27] found precision and accuracy results expressed RSD higher than ours for some analytes such as benzene, toluene, xylenes, n-propylbenzene and trichlorobenzenes. Table 5.…”

Supramolecular microextraction of cobalt from water samples before its microsampling flame atomic absorption spectrometric detection

“…The lack of cobalt in the human body causes anaemia. However, exposure to a large dose of cobalt leads to asthma and causes kidney and liver disorders [1][2][3][4][5][6]. Many routes for cobalt contamination in the environment have been reported, including mining and industrial activities [6,7].…”

Kinetics and mechanism of trichloroisocyanuric acid/NaNO2‐triggered nitration of aromatic compounds under acid‐free and Vilsmeier‐Haack conditions

“…But this procedure pumps out a number of excessive acid waste streams into laboratory/industrial drains that trigger environmental pollution. During the past five decades, quite a good number of nitrating regents have been developed to address the issues that are found in classical nitration procedure . During the past one decade, our group has also been actively working on the development of ecofriendly and cost‐effective nitrating agents and accomplished few noteworthy nitration protocols under acid‐free conditions .…”

“…During the past five decades, quite a good number of nitrating regents have been developed to address the issues that are found in classical nitration procedure. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] During the past one decade, our group has also been actively working on the development of ecofriendly and cost-effective nitrating agents and accomplished few noteworthy nitration protocols under acid-free conditions. [20][21][22][23][24] Trichloroisocyanuric acid (TCCA) is a cost-effective, less toxic, less corrosive, efficient, and versatile laboratory reagent, which has been reported in 1902 by for the first time by Chattaway and Wadmore 25 and explored as an efficient reagent for oxidation and chlorination reactions.…”