农业环境科学学报2011，Vol.30Issue(6)：1172-1179,8.
渤海沉积物中微生物铁还原能力及其影响因素探讨
The Capability and Influencing Factors of Microbial Iron Reduction in Marine Sediments from Bohai Bay, China
摘要
Abstract
Anaerobic incubations of leaching liquors from sediments of 4.sites with different water grades in Bohai bay were conducted to research the capability of microbial Fe( Ⅲ ) reduction.Influence of carbon sources, temperature, incubation time and pH value on microbial Fe ( Ⅲ ) reduction was also investigated by monitoring the content of Fe ( Ⅱ ) in this amended incubation.As results represented, glucose and pyruvate were in prior and quick utility in microbial Fe( Ⅲ ) reduction in all the incubations.The capability of microbial Fe( Ⅲ ) reduction amended with carbon resource showed in order as glucose＞pyruvate＞lactate＞acetate.Water grades did apparently influence on capability of microbial Fe( Ⅲ ) reduction, reflecting by obviously higher capability of water grade of I and Ⅱ than that of Ⅲ and Ⅳ.Temperature from 15 °C mote the efficiency of Fe( Ⅱ ) reduction with priority carbon sources.Flooding time elongation benefited promoted the microbial community which preferred to utilize glucose and acetate and therefore enhanced the capability of microbial Fe( Ⅲ ) reduction.The strongest capability of Fe( Ⅲ ) reduction appeared in pH neutral system and the increase of pH value from 8.0 to 11.0 and the decrease from 6.0 to 3.0 both impaired the reduction of Fe( Ⅲ ) during incubation.关键词
沉积物/厌氧培养/Fe(Ⅲ)还原/碳源利用/环境因素Key words
sediments/ anaerobic incubation/iron( Ⅲ ) reduction/ carbon source utility/ environment factor分类
资源环境引用本文复制引用
陈秦,赵佳佳,曲东,朱超..渤海沉积物中微生物铁还原能力及其影响因素探讨[J].农业环境科学学报,2011,30(6):1172-1179,8.基金项目
国家自然科学基金项目(40971158) （40971158）
