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Analysis of Rainwater Samples in Cheju

Abstract

Precipitation samples were collected at Kosan, Cheju Island over a period of 6 months An automatic rain sampler was manufactured domestically and installed at Kosan station. All samples were collected on a weekly basis. Samples were analyzed for S $O_4$$^{=}$, N $O_3$$^{[-10]}$ , C $l^{[-10]}$ , N $H_4$$^{+}$, N $a^{+}$, $K^{+}$, $Ca^{++}$, $Mg^{++}$, and pH and specific conductivity. The quality analysis of rain sample data were performed based on ion balance and specific conductivity. The pH of rain samples ranged between 4.6 to 6.6. Bicarbonate ion concentration were included in ion balance and specific conductivity calculations. The sum of cation concentrations were slightly greater than the sum of anion concentrations. Calculated specific conductivity was greater than measured specific conductivity. The most probable explanations for this discrepancy is "an anion too low or anion missing." Two criteria were used to identify outliners. They are 1) the difference between the sum of anion concentrations and cation concentration is more than 50 $\mu$eq./1 and 2) the difference between calculated and measured specific conductivity is more than 25%. Chemical analysis from several samples did not satisfy these quality control criteria. Volume weighted average concentrations were calculated. Dominant free acids in rain samples were N $a^{+}$, C $l^{[-10]}$ , S $O_4$$^{=}$, N $O_3$$^{[-10]}$ ions in order of abundance. Non-seasalt sulfate comprises 76% of total sulfate.sulfate.e.ate.e.

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참고문헌 (10)

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이 논문을 인용한 문헌 (16)

  1. 1995. "Characteristics of particles at Kosan, Cheju Island: Intensive study results duting March 11 .sim. 17 1994" 大氣保全 : 韓國大氣保全學會誌, 11(3): 263~272 
  2. 1996. "Measurement Study at Kosan, Cheju Island during March-April, 1994: (I) Transport of Ambient Aerosol" 大氣保全 : 韓國大氣保全學會誌, 12(1): 79~90 
  3. ; ; Mikio Kasahara 1996. "Characterization of Atmospheric Aerosols Scavenged by Rain Water" 大氣保全 : 韓國大氣保全學會誌, 12(2): 159~165 
  4. 1996. "Effects of Crustal Species on Characteristics of Aerosols: Simulation of Measurements at Kosan, Cheju Island, 1994" 大氣保全 : 韓國大氣保全學會誌, 12(3): 289~296 
  5. 1996. "Measurements at Kosan, Cheju Island during the Summer, 1994: (I) Aerosol Ion Composition" 大氣保全 : 韓國大氣保全學會誌, 12(3): 297~305 
  6. 1996. "Interpretation of Analytical Data of Ion Components in Precipitation, Seoul" 大氣保全 : 韓國大氣保全學會誌, 12(3): 323~332 
  7. 1996. "A Study on Chemical Features of Fog Sample in Summer at Mt. Sobaek" 大氣保全 : 韓國大氣保全學會誌, 12(4): 399~406 
  8. 1997. "Measurement of Carbonaceous Species in Fine Particles at Kosan, Cheju Island during the Two Summer Seasons of 1994 and 1995" 大氣保全 : 韓國大氣保全學會誌, 13(3): 179~191 
  9. 1998. "Ionic Composition of Early and Succeeding Rainwater in Pusan Area" 大氣保全 : 韓國大氣保全學會誌, 14(4): 361~368 
  10. 1998. "A Study on Chemical Characterization of Precipitation in the Central Part of Korea from 1994 to 1997" 大氣保全 : 韓國大氣保全學會誌, 14(6): 589~598 
  11. 1998. "" 한국환경과학회지 = Journal of the environmental sciences, 7(4): 523~530 
  12. 1999. "Analysis of Rainwater in Clean Air Area : Characteristics of Rainwater at 1100 Site of Mt. Halla and Cheju City in 1997-1998" 한국대기환경학회지 = Journal of Korean Society for Atmospheric Environment, 15(5): 555~566 
  13. 1999. "Seasonal Variations of Acdity and Chemicstry of Precipitation in Iksan Area" 한국대기환경학회지 = Journal of Korean Society for Atmospheric Environment, 15(4): 393~402 
  14. Kim, Man-Goo ; Kang, Mi-Hee ; Lim, Yang-Suck ; Park, Ki-Jun ; Hwang, Hoon ; Lee, Bo-Kyung ; Hong, Seung-Hee ; Lee, Dong-Soo 1999. "A Study on the Behavior and Deposition of Acid Precipitation-comparison of Chemical Composition of Rain Water between Chunchon and seoul" 한국대기환경학회지 = Journal of Korean Society for Atmospheric Environment, 15(2): 89~100 
  15. Kim, Man-Goo ; Kang, Mi-Hee ; Lim, Yang-Suck ; Park, Ki-Jun ; Hwang, Hoon ; Lee, Bo-Kyung ; Hong, Seung-Hee ; Lee, Dong-Soo 1999. "A Study on the Behavior and Deposition of Acid Precipitation-comparison of Chemical Composition of Rain Water between Chunchon and seoul" 한국대기환경학회지 = Journal of Korean Society for Atmospheric Environment, 15(2): 89~100 
  16. Jung, Woon-Seon ; Park, Sung-Hwa ; Kang, Deok-Du ; Lee, Dong-In ; Kim, Dongchul 2014. "Characterization of Chemical Properties of Precipitation at Busan, Korea, 2009" Journal of environmental science international = 한국환경과학회지, 23(1): 69~79 

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