生物标志物法描述有机无机复合体对生物炭的保护  

Using Benzene Polyacid Biomarkers to Describe the Protective Effects of Organic-Inorganic Composites on Biochars

作　　者：尹梦楠 李芳芳[1] 石林 李浩[1] 张迪[1,2] YIN Mengnan;LI Fangfang;SHI Lin;LI Hao;ZHANG Di(Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Provincial Key Lab of Carbon Sequestration and Pollution Control in Soils,Kunming 650500,China)

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650500 [2]云南省土壤固碳与污染控制重点实验室,云南昆明650500

出　　处：《昆明理工大学学报（自然科学版）》2018年第6期113-117,共5页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金项目(41663014);云南省中青年学术和技术带头人后备人才项目(2018HB008)

摘　　要：生物炭(biochar)进入环境后,土壤中的无机矿物以及生物炭本身所含有的内源矿物可能与生物炭形成有机无机复合体从而保护生物炭,增加其稳定性.以滇池底泥制备的生物炭为研究对象,用酸洗的方法进行洗矿处理,通过元素分析及苯多酸生物标记物测定,对有机无机复合体对生物炭的保护作用进行描述.结果表明:洗矿处理后生物炭C含量明显高于处理前,表明去除硅酸盐后会导致氧的大量流失和碳比例的相对增加;洗矿处理后生物炭BPCAs总含量明显高于处理前,表明有机无机复合体保护生物炭不易被硝酸氧化.After biochars enters the environment,the inorganic minerals in the soil and the endogenous minerals derived from biochar itself may form an organic-inorganic composite to increase the stability of biochar.In this paper,the protective effects of organic-inorganic composites on biochar were studied.Biochars derived from Dianchi sediment were washed by acid to remove the endogenous minerals.The results showed that the content of C and the yield of BPCAs after acid treatment were significantly higher than that before acid treatment,which indicated that the removal of silicate resulted in a large loss of oxygen and a relative increase in carbon ratio,and that the organic-inorganic composite protected the biochar from being oxidized by nitric acid.

关 键 词：生物炭 有机无机复合体 洗矿 苯多酸 

分 类 号：X705[环境科学与工程—环境工程]