摘要
氨氮是水体中的营养素,可导致水体质量恶化,出现富营养化现象,对鱼类及某些水生生物产生毒害,此现象已成为当今重大环境问题之一。本文利用光谱分析技术采集、分析了不同氨氮浓度的水样,并应用线性回归和偏最小二乘方法分析二者的相关关系,建立了水质中氨氮含量与其吸收光强的定量分析模型,模型的R2为0.977 2,SEC为0.1,SEP为0.08,并通过了F验证。本研究有效地分析了水中氨氮的含量,为水质检测奠定了基础。
The ammonia nitrogen is the nutrient in the water,but it could cause the water quality deterioration and eutrophication,and has poisonous effects on some hydrobiont and fishes.And this phenomenon has becoming a serious environmental problem around the world now.In this paper,the spectral analysis technologies were used to collect and analyse the water samples with different ammonia nitrogen concentration.Then the quantitative analysis model elaborating the relationship between the ammonia nitrogen concentration and the corresponding absorption spectrum was estab1ished with linear regression and partia1 least squares.The correlation coefficient（R^2）,standard error for calibration（SEC） and prediction error（SEP） are respectively 0.977 2,0.1 and 0.08 in the model which had passed the F-test.The researches in this paper effectively analyse the ammonia nitrogen concentration and form the foundation for the water quality detection.
出处
《天津农学院学报》
CAS
2010年第3期26-28,共3页
Journal of Tianjin Agricultural University
基金
天津农学院科学研究发展基金项目"基于近红外光谱的渔业养殖水域水质直测技术研究"(2008N014)
关键词
可见-近红外光谱
氨氮
线性回归
定量分析模型
visible-near infrared spectroscopy
ammonia nitrogen
linear regression
quantitative analysis model
