Gcms method analysis regulated de khan uzman (8 resultados)

Condición: New.

Condición: New.

PAP. Condición: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condición: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A new method was established for the determination of extractable flame retardants from textile, foam, leather and plastic test specimens. The flame retardants were extracted with toluene from test specimens using ultrasonic assisted extraction with extraction time of 60 min at 60 ºC. Flame retardants were separated on a DB-XLB column using gas chromatography mass spectrometry (GC-MS) with helium (99.9 %) as carrier gas. One target and two qualifier ions were selected for target analyte under SIM/SCAN mode. Pre-treatment parameters were optimized, including the type of extractant, extraction method and extraction time. Under optimized conditions, recoveries of target compounds ranged from 90 to 100.8 %. Calibration curve working range was 0.25 to 5.0 mg L-1 with regression value 0.996-0.998. Relative standard deviation (RSD) was <15% for test specimens and <10% for pure standards respectively. Limit of detections (LODs) were lower than 0.02 mg L-1 level. The proposed method was successfully used for the determination of actual specimens with concentrations ranging from 1.20 to 18.34 mg L-1. 60 pp. Englisch.…

Condición: New. Print on Demand.

Condición: New. PRINT ON DEMAND.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -A new method was established for the determination of extractable flame retardants from textile, foam, leather and plastic test specimens. The flame retardants were extracted with toluene from test specimens using ultrasonic assisted extraction with extraction time of 60 min at 60 ºC. Flame retardants were separated on a DB-XLB column using gas chromatography mass spectrometry (GC-MS) with helium (99.9 %) as carrier gas. One target and two qualifier ions were selected for target analyte under SIM/SCAN mode. Pre-treatment parameters were optimized, including the type of extractant, extraction method and extraction time. Under optimized conditions, recoveries of target compounds ranged from 90 to 100.8 %. Calibration curve working range was 0.25 to 5.0 mg L-1 with regression value 0.996-0.998. Relative standard deviation (RSD) wasVDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 60 pp. Englisch.…