检索结果-南通市图书馆

Microwave-assisted combustion to produce benzene polycarboxylic acids as molecular markers for biochar identification and quantification

引用

Biochar 2021年第4期3卷 407-418页

作者： Bruno Glaser Marie Guenther heike maennicke Tobias Bromm Institute of Agricultural and Nutritional Sciences Soil BiogeochemistryMartin Luther University Halle-Wittenbergvon-Seckendorff-Platz 306120 HalleGermany

Biochar is a promising carbon dioxide removal(CDR)technology for climate change *** procedures for its determination are lengthy,labor-intensive,and difficult to *** polycarboxylic acids(BPCA)are the most promising molecular markers for identification and quantification of biochar and its quality as they specifically represent the stable polyaromatic backbone of ***,using the BPCA method,its stability and,thus,its C sequestration potential could be used for CDR *** current BPCA method relies on a specific high-pressure digestion apparatus,which is not available around the ***,the aims of the present work were(i)to compare the conventional high-pressure nitric acid oxidation with a microwave-assisted digestion technique and optimize the oxidation conditions in such a way that previous results are comparable with future ones,and(ii)to significantly reduce the digestion time of soil samples of 8 h and to develop a suitable routine method that produces comparable and reproducible *** this purpose,soil and control sample series were prepared for different *** results were compared with the values of the conventional method both for individual samples and for the whole dataset *** ensure the representative-ness of the results,in addition to various soil samples with different properties,we included two reference materials into our data set,one without biochar(wheat flour)and a biochar *** results showed that conventional nitric acid oxidation in the BPCA determination at 170°C and 8 h can be substituted by digestion in a microwave reaction system(CEM Mars6)at 190°C and 1 *** results further showed that this condition needs to be strictly matched,because,otherwise,over-or underestimation of biochar quantity and/or quality will be the *** goal of a less time-consuming BPCA extrac-tion from soil samples was achieved by reducing the extraction t

关键词： Biochar Black carbon Pyrogenic carbon Analysis Molecular marker Microwave-assisted combustion

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：