FORMER MEMBER

 

Lucksagoon Ganranoo

Visitor (Exchange student)

 ganranoo@uta.edu

 

Research Profile

Determination of Nitrophenolic Compouds in the Atmosphere

      

The origins of nitrophenols presented in atmospheric have been described from many sources. There was review about source of nitrophenol in atmosphere by Harrison. In primary sources, generally,  nitrophenols  are the hazardous chemicals, which are either used as raw materials or intermediate products in the manufacturing of phenol-formaldehyde resins, pharmaceauticals, disinfectants, dyes, explosives, herbicides (like dinoseb and nitrofen) and insecticides (like parathion and methyl parathion) . Nitrophenols are introduced into the atmosphere directly by the usage or disposal of these commercial products, combustion of coal and wood and traffic activity. Some report has suggested that NPs can be present in internal combustion engine of automobiles

The OH radical, considered as atmospheric vacuum cleaner, plays a key role in atmospheric processes, including ozone generation.  Many metropolitan areas including Houston, DFW, etc. have morning ozone excursions that is difficult to explain.  HONO provides a reservoir for a photolytic morning OH release, but measured values of HONO are not enough to account for the observed excursions.  Nitrophenols can potentially generate HONO and hence an assessment of atmospheric nitrophenols is of importance.  Also, several nitrophenols are phytotoxic, estrogenic and act as vasodilators, raising direct concerns about adverse health effects.  Nitrophenols could easily be scavenged by rain (they are highly water soluble) and hence measurement of nitrophenols in both air and rain are relevant.  That vehicular exhaust contains nitrophenols is well documented but there is no significant data in the US on nitrophenol concentrations either in air or in precipitation

 

. 

Figure 1 Chromatographic system for determination of nitrophenols

Silica gel cartridges were used for air sampling. Chromatographic system was applied for analysis nitrophenols. The Four prevalent nitrophenols were found to be present in the air samples collected at University of Houston. These are 2,4-Dinitrophenol (2.03 0.69 ng/m3),  4-nitrophenol (6.04 1.11 ng/m3), 2-nitrophenol (2.30 0.92 ng/m3)and 2-Methyl-4-nitrophenol (2.61 0.79 ng/m3).

 

Education

M.S. (Chemistry), Chiang Mai University, Thailand, 2005.

B.S. (Chemistry), Chiang Mai University,Thailand, 2002.


Education

M.S. (Chemistry), Chiang Mai University, Thailand, 2005.

B.S. (Chemistry), Chiang Mai University,Thailand, 2002. 

Publications

  • S. Kradtap- Hartwell, D. Somprayoon, P. Kongtawelert, S. Ongchai, O. Arppornchayanon, L. Ganranoo, S. Lapanantnoppakhun, K. Grudpan, "Online assay of bone specific alkaline phosphatase with a flow injection-bead injection system", Anal Chim Acta., 600 (1-2), 188-193 (2007).  DOI:10.1016/j.aca.2006.12.056
  • S. Lapanantnoppakhun, S. Kasuwas, L. Ganranoo, J. Jakmunee, K. Grudpan, "Simple spectrophotometric flow injection system with an in-valve minicolumn for enhancement during the determination of chromium(III) using EDTA", Anal. Sci., 22 (1), 153-155 (2006).  DOI:10.2116/analsci.22.153

 

 

 

Home

 

News

Research

People

Pictures

 

 

 

UTA Chemistry

UTA Home

Contact Us