A Reduced scale spectrofluorometric method for determination of total petroleum hydrocarbon in seawater

Main Article Content

Napa Tangtreamjitmun
Ruchanon Wongpun

Abstract

The standard guide for determining total petroleum hydrocarbon (TPH) in seawater, established by the Intergovernmental Oceanographic Commission (IOC), has been adapted to align with principles of green analytical chemistry. This adaptation involves reducing both the sample volume and the amount of extraction solvent used. These modifications have reduced the pre-concentration factor from 800 to 20, making it compatible with the high-sensitivity spectrofluorometers currently available in the market. A calibration curve of chrysene without extraction was linear over a concentration range of 10-200 mg/L. The regression equation was y=1.567x+2.524 with the coefficient of determination (R2) 0.9992. Limit of detection (3sd/m, n=10) and limit of quantitation (10sd/m, n=10) were 0.065 and 0.22 mg/L, respectively. The method was employed to assess TPH levels in seawater along Bangsean beach in Chonburi province, Thailand. To establish it as a standard method, collaborative trials of this approach should be conducted for validation and acceptance.

Article Details

How to Cite
[1]
N. Tangtreamjitmun and R. Wongpun, “A Reduced scale spectrofluorometric method for determination of total petroleum hydrocarbon in seawater”, NKRAFA J SCI TECH, vol. 20, no. 2, pp. 36–44, Oct. 2024.
Section
Research Articles

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