SPME-GCMS analysis of dimethyl phosphate (DMMP) in water samples

SPMEProbe item number：ZZ-SPME-06-s
Analysis condition

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Sample: 10 ml standard water sample, DMMP concentration: 100 ng/mL

Extraction method: immersion, extraction temperature: ### ºC, extraction time: ### min, salt concentration: supersaturated sodium chloride (add 4 g), stirring rate: ### rpm

Desorption temperature: ### ºC, desorption time: ###min

Inlet: ### ºC, shunt ratio ###:1

Carrier gas: Helium, flow rate ###ml/min

Program temperature rise: ###ºC hold ###min, heat up to ###ºC /min at ### #ºC, hold ###min

MS conditions: Scanning range 40-300 m/z, ion source temperature 220 ºC

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SPME-GC/MS Total Ion Flow Chromatography (TIC)

Linear range, linear correlation coefficient, minimum detection limit and repeatability

化合物	线性范围(ng/mL)	相关系数（r）	LOD (ng/mL)	加标回收率%（50ng/mL，RSD%, n=5）
化合物	线性范围(ng/mL)	相关系数（r）	LOD (ng/mL)	海水	地下水	河水	自来水
DMMP	1-1000	0.9930	0.33	105.2 (9.1)	96.6(9.3)	114.2(9.8)	101.0(9.5)

Comparison of extraction efficiency between custom probe and commercial probe

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Key word：Solidphasemicroextraction

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