摘要
在碱性条件下,NBS直接氧化腐殖酸产生强烈的化学发光信号,结合流动注射技术,建立了测定土壤腐殖酸含量的流动注射化学发光分析法并详细研究了影响化学发光信号强度的各种因素。方法的测定线性范围为1.0×10-7-1.0×10-3g/ml,检出限(3σ)为3×10-8g/ml。对5.0×10-5g/ml的腐殖酸进行11次平行测定,相对标准偏差为1.8%。将该法用于实际土壤样品分析,结果令人满意。
The paper, a sensitive method for the determination of humic acid with flow-injection chemiluminescence method of oxidation by NBS was reported. It is based on the chemiluminescence emitted during the direct oxidation of humic acid by NBS in sodium hydroxide condition. Various factors influenced the CL system were investigated carefully.The detection limit is 3×10^-8g/ml （3σ）, the linear range of determination was 1.0 × 10^-7 ～ 1.0 × 10^-3 g/ml and the relative standard deviation of 1.8% （5.0 × 10^-2 g/ml, n = 11）. The recommended method has been successfuUy used for analysis of humic acid in soil.
出处
《中国环境监测》
CAS
CSCD
北大核心
2007年第2期26-28,共3页
Environmental Monitoring in China
基金
第二批"重庆市高等学校优秀中青年骨干教师资助计划"[渝教人(2005)2号]
