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Development of split-splitless PTV large-volume injection for analytes covering a wide boiling point range

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A programmed-temperature vaporiser (PTV)-large-volume injection (LVI) method with a two-stage evaporation process was developed capable of effectively introducing analytes covering a wide boiling-point range (from that of n-nonane to that of n-tetracontane). The method uses speed-controlled sample introduction (50 µL) and a simple PTV setup with Peltier Cooling. Besides, an important cause of discrimination of high-boiling compounds in LVI was identified. The method was successfully applied to simplify the sample preparation in the extractable petroleum hydrocarbon analysis of water and soil samples. The method proved to be resistant to matrix contamination. Linearity was tested between 0.01 and 20 µg mL-1. The correlation coefficients ranged from 0.996 to 0.999. The relative standard deviation calculated from five parallel runs was 2.73%. The major advantage of the method is its simplicity making it an attainable choice for smaller environmental laboratories.
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Keywords: extractable petroleum hydrocarbon (EPH); large-volume injection (LVI); programmed-temperature vaporiser (PTV)

Document Type: Research Article

Affiliations: 1: Joint Research and Training Laboratory on Separation Techniques, Eotvos Lorand University, H-1117, Pazmany Peter setany 1/A, Budapest, Hungary 2: Wessling Hungary Ltd., H-1047, Foti ut 56, Budapest, Hungary 3: Eotvos Lorand University, H-1117, Pazmany Peter setany 1/A, Budapest, Hungary

Publication date: January 1, 2009

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