US EPA Method 325: GC Analysis of Volatile Organic Compounds on SPB®-HAP after Thermal Desorption using FLM Carbopack™ X Tube
材料
配件
用于 Luer 针头和带 TLL 锁定器进样针的 Hamilton® 针头
Metal Hub (N), needle size 22 ga (cone tip, side-port), needle L 51 mm (2 in.), pkg of 6 eaHamilton® Samplelock 注射器
1010SL, volume 10 mL, needle size 22 ga (bevel tip), needle L 51 mm (2 in.)Luer 公接头/可拆卸针头的接头，件
converts large hub RN termination (250 μL or larger) to a Male luer connection.CONDITIONS
sample/matrix
14 Day Storage Time after Spiking with Gas Mix
thermal desorption tube
FLM Carbopack X 1/4" (6.35 mm O.D. X 3.5" (89mm) Long Stainless Steel TD Tube (28686-U)
dry purge
50 mL/min @ Ambient for 1 min
desorption preheat
FLM Carbopack-X Tube Desorption: 50 mL/min @ 330°C for 5 min
desorption process
Refocusing Trap: 7 mL/min @ 330°C for 5 min
bake
n/a
transfer line/valve temp.
175 °C
column
SPB-HAP. 60 m x 0.32 mm I.D., 4.0μm (25020-U)
oven
40° C (5 min), 5°C/min to 100° C, 15°C/min to 220° C (12 min)
detector
MSD
MSD interface
230°C
scan range
Full Scan. m/z 35-265
carrier gas
helium, 2 mL/min @ambient
injection
Thermal Desorption
liner
N/A
说明
分析说明
Carbopack™-X TD spiked with 12.7 mL of the gas mix using the ATIS Adsorbent Tube Injector System. Swagelok® endcaps were placed on the tube. The spiked tube was stored at ambeint temperature for 14 days prior to analysis.
法律信息
Carbopack is a trademark of Merck KGaA, Darmstadt, Germany
SPB is a registered trademark of Merck KGaA, Darmstadt, Germany
Swagelok is a registered trademark of Swagelok Company