Page 8 - Shimadzu Journal vol.3 Issue1

Environmental Analysis

4. Analysis of Volatile and Semi-Volatile Organic
Compounds using a GCMS-QP2010 Ultra

The EPA regulates many organic compounds known or suspected groundwater in the event of contamination from UOG activities,
to be harmful to the environment or human health. In addition, while also screening for other volatile and semi-volatile organic
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organic compounds identified in groundwater may help determine compounds in an untargeted fashion. Samples were prepared by
the source of contamination. For example, specific compounds extracting 5 mL of ground water with 2 mL of ethyl acetate. Table
thought to be used in unconventional drilling techniques such as 1 and Table 2 display the MS program used and selected SIM ions
hydraulic fracturing. The Shimadzu QP2010 Ultra GC-MS equipped for compounds of interest, respectively. Fig. 2 displays an example
with a SHRXI-5MS (30 m x 0.25 mm x 0.25 µm) column was used GC-MS chromatogram using this method on DI water spiked with
to simultaneously target compounds that might be present in several compounds.

1 2 4 5 6 8 9
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Fig. 2 GC-MS chromatogram. 1: ethylene glycol, 2: p-xylene, 3: ethylene glycol butyl ether, 4: naphthalene, 5:
2-methylnaphthalene, 6: 1-methylnapthalene, 7: 2-naphthol, 8: 1-naphthol, 9: bisphenol A

Analysis Conditions [GC] [MS]
Instrument: GCMS- QP2010 Ultra Carrier gas: He Acquisition mode: Scan/ SIM
Column: SHRXI-5MS, 30 mL. x 0.25 I.D., df: 0.25 µm Carrier gas control: Linear velocity, Interface temp.: 260 °C
35 cm/s
Column oven temp.: 40 °C (3 min.) ˠ (20 °C/min.) ˠ 70 °C (0 min.) ˠ Ion source temp.: 260 °C
Split ratio: 20:1
(40 °C/min.) ˠ 330 °C (2 min.)
Injection port temp.: 300 °C
Injection volume: 2 µL

Table 1 MS program

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