Written Paper
The study of the distribution of organotin in the Love River in Kaohsiung [2004]
Chi, Tse-hsien; I-ming Chen [Corporate Author] Wei-hsien Wang [Corporate Author] Rong-huei Chen [Corporate Author]
استعراض النص الكامل
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AbstractLove River, the longest river in Kaohsiung City, 12 km in length, originates from Jen-Wu village of Kaohsiung County and goes into Kaohsiung Harbor from the northeast to southwest. Width of the river is increased from 14 m of the upstream to 130 m. Because there were active shipyards and many boats in Kaohsiung Harbor, TBT in paint as biocide to paint the ship will be released into seawater and cause the long-term contamination of organotin. It is possible that Love River may be polluted by the seawater from Kaohsiung Harbor for the intertidal zone of Love River reaches Chih-Ping Bridge.The goal of the present study is to analyze water and sediment of Love River in order to find out whether Love River has been polluted by organotin and, if yes, where the polluted source is. The samples were derivated with the Grignard reagent¡]n-pentylmagnesium bromide¡^and extracted by n-Hexane. Clean samples were concentrated to about 1 ml under a gentle stream of purified nitrogen gas. The final extracts¡]3£gl of each¡^were injected into a gas chromatograph with a flame photometric detector. The results reveal that TBT and DBT were predominant in the whole area of study. The concentration of TBT¡]29-360 ppt¡^was higher than DBT¡]0-292 ppt¡^in the riverwater. In the sediment, the concentration of DBT( 154-68800 ppb ) was higher than TBT ( 3650-30222 ppb )¡C Gransize between 0.053¢Pto 1.00¢P was predominant in the extent of sorption of organotin to sediments. The
percentage of this gransize was from 82¢H to 98¢H. The major source of organotin pollution was Kaohsiung Harbor, but there were some other sources upstream of Chih-Ping Bridge. The polluted source of phentyltin was from the upstream of Chih-Ping Bridge and the branch of Love River¡]Canal, No2¡^.Comparing to other countries, organotin pollution was more serious in Love River. The concentration of TBT exceeded maximum allowable level of 20 ppt in accordance with regulations set by Britain. It is necessary to strengthen the regulation of organotin in Taiwan.
