| 原位土壤溶液采样及可溶性有机碳(DOC)的紫外吸收光谱直接测定探讨 |
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| 引用本文： | 罗小三,仓龙,郝秀珍,李连祯,周东美. 原位土壤溶液采样及可溶性有机碳(DOC)的紫外吸收光谱直接测定探讨[J]. 土壤, 2007, 39(6): 943-947 |
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| 作者姓名： | 罗小三 仓龙 郝秀珍 李连祯 周东美 |
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| 作者单位： | 1. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008;中国科学院研究生院,北京,100049
2. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008 |
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| 基金项目： | 国家重点基础研究发展计划(973计划);中国科学院知识创新团队国际合作伙伴计划项目 |
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| 摘 要： | 首次采用管壁过滤孔径为微米级(0.1~0.3μm)的水处理用多孔聚丙烯(腈)空心纤维细管,与注射器或真空管相连,自制成土壤溶液采样器,将空心纤维管埋置或插入土壤中抽取层面土壤溶液,所得溶液无须过滤即可进行各种理化分析和测定,且可连续采样,提出了一种价廉实用的原位土壤溶液取样方法。并根据可溶性有机碳(DOC)在紫外光区的吸收特征,将土壤溶液在254nm波长处的吸光度(UVA254)与DOC浓度(TOC仪法)进行比较,发现两者有较好的相关性(DOC=38.84×UVA254,n=37,R2=0.82),即直接测定土壤溶液的UVA254,再乘以系数38.84可以估算DOC浓度。与复杂的氧化-比色和昂贵的TOC仪测定法对比,UVA254能快速便捷地估计土壤溶液中DOC的浓度。UVA254也适用于水体DOC的估计。
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| 关 键 词： | 原位土壤溶液采样器 可溶性有机碳(DOC) 紫外分光光度法 |
In-Situ Sampling of Soil Solution and Determination of Dissolved Organic Carbon (DOC) with UV Absorption Method (UVA254) |
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| LUO Xiao-san,CANG Long,HAO Xiu-zhen,LI Lian-zhen and ZHOU Dong-mei. In-Situ Sampling of Soil Solution and Determination of Dissolved Organic Carbon (DOC) with UV Absorption Method (UVA254)[J]. Soils, 2007, 39(6): 943-947 |
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| Authors: | LUO Xiao-san CANG Long HAO Xiu-zhen LI Lian-zhen ZHOU Dong-mei |
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| Affiliation: | State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China,State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China,State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China,State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China and State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China |
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| Abstract: | |
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| Keywords: | UVA254 |
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