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G005524

US EPA Method 524.2: GC Analysis of Volatiles on SPB-624 after Purge & Trap using "K" Trap

suitable for GC

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About This Item

technique(s)

gas chromatography (GC): suitable

test parameters

sample/matrix: each analyte at 10 ppb in 25 mL water
purge trap: VOCARB 3000 "K" (24940-U)
dry purge: 2 min
desorption preheat: 205 °C
desorption process: 40 mL/min at 210 °C for 2 min
bake: 260 °C for 10 min
transfer line/valve temp.: 110 °C
sample preparation: purge is 40 mL/min at 25 °C for 11 min
column: SPB-624, 30 m x 0.25 mm I.D., 1.4 μm (24255)
oven: 40 °C (2 min), 7 °C/min to 135 °C, 30 °C/min to 230 °C (3 min)
carrier gas: helium, 1.2 mL/min
injection: 30:1 split
liner: 0.75 mm I.D. SPME

application(s)

environmental
food and beverages

Analysis Note

Method 524.2 describes the analysis of volatile organic compounds in surface, ground, and drinking water. This application illustrates the analysis of the compounds listed in this method on a 30m x 0.25 mm I.D., 1.4 μm SPB-624 column using purge and trap / GC-MS.

Analyte

Description
    m-Xylene
    p-Xylene

analytical column

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