ugg stivali SPE-GCMS Determination of organophosph

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SPE-GC/MS Determination of organophosphorus and carbamate pesticides in water

9 results corresponding to 3 times the concentration of noise (rag / L) calculated detection limit, results in Table 2. Solid phase extraction for sample concentration when the 1O times, so the detection limit lower than the detection limit l0 times. 3.3.2 Method accuracy, precision, 5 copies of the same samples taken, each 20OraL, mixed pesticide standard solution were added so that the pesticide content of the sample 0.025ms / L, respectively, by experimental items SPE measured results in Table 3. 3.3.3 wrapped 4SCAN mode working curve and standard curve linear range of the standard series investigated the preparation of organic phosphorus in duplicate, one to 0mg / L,[link widoczny dla zalogowanych], 0.1m, 015mgL, o5mgL, 1.0mgL, ZSmgL, 5.0mg / L, for the SCAN test mode. Another is 0rode, 0.05mdL, 0.1mg / L,[link widoczny dla zalogowanych], 0.25mg / L, 0.5mg / L, 1.0mg / L,[link widoczny dla zalogowanych], 2.5mg / L for the SIM detection mode (due to solid phase extraction sample Concentration of organic phosphorus content by 10 times compared to the organic phosphorus content in water samples should be low-1O-fold), the use of SCAN and SIM detection mode were measured, the results shown in Table 4, Table 5.4 Conclusion Using technology to build SPE-GC/MS the drinking water and hydrogen 2O organophosphorus pesticides based ester method. The method is simple, fast, accurate, sensitive, pesticide contamination of drinking water for emergency testing, has practical value. The subject of the Sichuan Key Laboratory Medicine, Chengdu Medical Laboratory Construction Fund. References 【1] USEPAMethod1657: 1993, TheDeterminationofOrgano-Phosph013.18PesticidesinMunicipalandIndustrialWastewater [S]. 【2] KabbanySE, eta1. Monitoringofthepesticidelevelsin8omewatersuppliesandagriculturalland, inE1-Haram [J]. JournalofHazardousMaterials, 2000,72 (1) :11-21. 【3] CarpenterRA, HoUoweURH,[link widoczny dla zalogowanych], HillKM. Determinationofthemetabolitesoftheherbicidedimethyltetrachloroterephthalateindrinkingwaterbyhigh-performanceliquidchromatographywithgaschromatography/massspectrometryconfumation】【『. AnalChem. , 1997,69 (16): 3314. [4] GB/T5750.9-2006, the standard calibration method for pesticides in drinking water indicators 【S】. Beijing: China Standard Press, 2006. [5】 Ma Yan, Li Wei, Zhao Chuang, et al. Pesticide residues in modern technology and development trends 【J]. Beijing Agricultural University, 2007,23 (S2) :119-123. [6] LI Jia-Fu, Xu Yongfu. Total organic phosphorus in wastewater by gas chromatography】【J. Of Health Laboratory Technology, 1993,3 (3) :165-167. [7] HE Miao, Rao bamboo. Solid Phase Extraction Disk A surface water by gas chromatography of organochlorine and organophosphorus pesticides】【J. Rock and Mineral Analysis, 2008,27 (1) :12-16. 【8】 BSEN12918-1999: Waterquality-determinationofparathion, parathion-methylandsomeotherorganophosphoruscompoundsinwaterbydichloromethaneextractionandgaschromatographicanalysis [S]. BritishStandardInstitution. 1999. 【9] Song Xianlin Var Compensator Xuhua Jie, et al. Gas chromatography analysis of water, diesel】【J. China Measurement Technology, 2007,33 (5) :77-78.

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