EFFECT OF YELLOW LOESS ON ODOROUS GAS ADSORPTION AND ECOTOXICITY TEST USING DAPHNIA MAGNA  

作　　者：Hongseok Jang Boram Lee Seungyoung So 

机构地区：[1]Jeonbuk National University,Department of Architectural Engineering,Korea. [2]Jeonbuk National University,Department of Architectural Engineering,Research Center of Industrial Technology,Korea

出　　处：《Journal of Green Building》2021年第1期103-114,共12页绿色建筑学报（英文）

基　　金：(14AUDP-B070935-02,19AUDP-B128638-03)from the Urban and Architectural Research Program funded by the Republic of Korea Ministry of Land,Infrastructure and Transport Affairs.

摘　　要：To minimize damage caused by harmful substances released from artificial construc-tion materials,there has been increasing interest in eco-friendly houses constructed with natural materials.Among natural materials,yellow loess is South Korea’s most representative eco-friendly construction material,with high purification performance for indoor use.However,there has been no objective assessment of yellow loess’s performance at purifying indoor air.In this study,internal pores were found in yellow loess that were of a lamellar crystal structure consisting of bonds of silica and alumina plates,and there was a high negative charge on the loess surface;these might have contributed to the excellent performance of yellow loess in adsorbing odorous gas.There was also an exposure test using Daphnia magna to determine the eco-friendliness of yellow loess compared with that of cement mortar.Results showed the survival of Daphnia magna was longer in the indoor environment of a test chamber with higher concentration of ammonia wherein yellow loess was placed.EC50(median effective concentration,the concentration that caused death of 50%of bio-specimens)value of 19 ml of ammonia(0.1%solution),which was three times more than EC50 value of 6 ml of ammonia of the same area of cement mortar.

关 键 词：eco-friendly material yellow loess Daphnia magna evaluation CEC gas adsorption 

分 类 号：P53[天文地球—古生物学与地层学]