Simultaneous Analysis of 66 Pesticides by GC-MS Using Hydrogen Carrier Gas
19 Dec 2014Helium gas is typically used as a carrier gas for GC-MS. However, in recent years, the insufficient supply of helium gas and its increase in price have caused problems, prompting global efforts to address these problems. The use of hydrogen gas as an alternative carrier gas holds promise for addressing the issue. This application note presents the application of hydrogen carrier gas to the simultaneous analysis of a standard sample of 66 pesticides using the GCMS-QP2010 Ultra, which features a Dual Inlet Turbo Molecular Pump.
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GCMS-QP2010 Ultra Gas Chromatograph Mass Spectrometer
Capable of fast data measurement with sensitivity five times higher than previous models, the GCMS-QP2010 Ultra offers improved applicability for comprehensive two-dimensional GC and ultra-high separation. Shimadzu used new, patented mass spectrometry technology called Advanced Scanning Speed Protocol (ASSP™), a firmware protocol that optimizes the ion transmission hardware parameters with a highly efficient data collection algorithm, to increase data acquisition speed up to 20,000 u/sec and 100 Hz. ASSP also provides the added benefit of maintaining system sensitivity at elevated scan speeds. To help increase throughput, the GCMS-QP2010 Ultra features high-speed oven cooling for shorter analysis cycles. Using a double jet cooling system, the GC cools from 350 to 50 degrees Celsius in less than three minutes. The combination of a high-speed GC method and a high-speed cooling oven can reduce the analysis cycle by up to 50 percent. To further increase lab efficiency, the GCMS-QP2010 Ultra can accept two narrow-bore capillary columns into the MS simultaneously. Its twin-line MS system allows users to switch applications without physically modifying the column installation. Users simply decide which columns are required for analysis and choose the associated injection port.