Results of High-Volume Air Sampler at Cape Hedo

University of the Ryukyus, Okinawa, Japan

Contact to ;

Takemitsu Arakaki, Faculty of Science (E-mail:arakakit@sci.u-ryukyu.ac.jp)

Akira Tanahara, Instrumental Reserch Center (E-mail:tanahara@lab.u-ryukyu.ac.jp)

I. Experimental methods

• Bulk air samples were collected by using a high-volume air sampler at 500 L min^-1 for one week.

• The concentration of Na⁺, Ca²⁺ and Mg²⁺ were analyzed by using Atomic Absorption Spectrometry.

• The concentration of Br^-, Cl^-, NO₂^-, NO₃^- and SO₄^2- were analyzed by using ion chromatography.

• WSOC (Water Soluble Organic Carbon) was analyzed by using a total organic carbon analyzer after extracting organic compounds with Mili-Q water.

• WSFe (Water Soluble Fe concentration ) was determined by using a Ferrozine-HPLC technique (Okada et al., Bunseki Kagaku, Vol. 54, No. 9, 861-868, 2005)

II. Observed Data (2005 - 2006)