One hundred and eighty-one aerosol samples, and two cascade impector samples were collected in the atmosphere over the western Taiwan Strait from 1991 to 1993. Concentrations of Al, Fe, Cu, Pb, Cd and Na were determin...One hundred and eighty-one aerosol samples, and two cascade impector samples were collected in the atmosphere over the western Taiwan Strait from 1991 to 1993. Concentrations of Al, Fe, Cu, Pb, Cd and Na were determined by an atomic absorption spectrophotometry. The contents of Fe, Cu, Pb and Cd in the atmosphere over thewestern Taiwan Strait were lower than those over inland cities in China, Europe or North America . Annual and seaed variations of concentrations of the metals could be primarily attributed to washout or monsoon for non-sea-saltmetals. Fe was presented in bimodel distributions with size around 3. 6 and o. 52 μp, As was chieny distributed on theparticles with being greater than 2. 1 μm, Na on the particles with being greater or equal to 3. 6 μp, and the size distributions of Cu, Pb and Cd were presented in small particles, chiefly on those with being smaller than or equal to0.52 μp.展开更多
Atmospheric metals the over t he western Taiwan Siral t are studied and t heir sources are identified. Al and Feare mainly from crustal soil. A little amount of Fe is from pollution. Pb and Cd are banly from pollutio...Atmospheric metals the over t he western Taiwan Siral t are studied and t heir sources are identified. Al and Feare mainly from crustal soil. A little amount of Fe is from pollution. Pb and Cd are banly from pollution sources. Alittlee zmount of Pb is from crustal soil and recycled sea spray. Na is mostly from seawater and a little amonut of Na isfrom crustal soil or encondary aerosol Particles. Cu is mainly from crustal soil, Partly from pollutants, and a littleamount from recycled sea spray. Comparing the total inputs of the atmospheric deposition of the metals to the TaiwanStrait waters with the inputs from the rivers shaws that the input of Cu from the atmosphere is lower than that from the rivers, and the input of Ph is higher than that from the rivers; the input of Cd is a little higher than that from therivere.展开更多
Study of 1986 and 1987 heavy metal distribution in surface water of the Kuroshio area in the East China Sea showed regional and slight seasonal variations in distribution and concentration . Heavy metal levels in Taiw...Study of 1986 and 1987 heavy metal distribution in surface water of the Kuroshio area in the East China Sea showed regional and slight seasonal variations in distribution and concentration . Heavy metal levels in Taiwan Strait, the sea area north of Taiwan and the continental shelf are higher than those in the main axis of the Kuroshio . Dissolved Cu in summer and winter decreases with the increase of salinity , but dissolved Cd has no obvious change with salinity .展开更多
文摘One hundred and eighty-one aerosol samples, and two cascade impector samples were collected in the atmosphere over the western Taiwan Strait from 1991 to 1993. Concentrations of Al, Fe, Cu, Pb, Cd and Na were determined by an atomic absorption spectrophotometry. The contents of Fe, Cu, Pb and Cd in the atmosphere over thewestern Taiwan Strait were lower than those over inland cities in China, Europe or North America . Annual and seaed variations of concentrations of the metals could be primarily attributed to washout or monsoon for non-sea-saltmetals. Fe was presented in bimodel distributions with size around 3. 6 and o. 52 μp, As was chieny distributed on theparticles with being greater than 2. 1 μm, Na on the particles with being greater or equal to 3. 6 μp, and the size distributions of Cu, Pb and Cd were presented in small particles, chiefly on those with being smaller than or equal to0.52 μp.
文摘Atmospheric metals the over t he western Taiwan Siral t are studied and t heir sources are identified. Al and Feare mainly from crustal soil. A little amount of Fe is from pollution. Pb and Cd are banly from pollution sources. Alittlee zmount of Pb is from crustal soil and recycled sea spray. Na is mostly from seawater and a little amonut of Na isfrom crustal soil or encondary aerosol Particles. Cu is mainly from crustal soil, Partly from pollutants, and a littleamount from recycled sea spray. Comparing the total inputs of the atmospheric deposition of the metals to the TaiwanStrait waters with the inputs from the rivers shaws that the input of Cu from the atmosphere is lower than that from the rivers, and the input of Ph is higher than that from the rivers; the input of Cd is a little higher than that from therivere.
文摘Study of 1986 and 1987 heavy metal distribution in surface water of the Kuroshio area in the East China Sea showed regional and slight seasonal variations in distribution and concentration . Heavy metal levels in Taiwan Strait, the sea area north of Taiwan and the continental shelf are higher than those in the main axis of the Kuroshio . Dissolved Cu in summer and winter decreases with the increase of salinity , but dissolved Cd has no obvious change with salinity .
