Investigation of Haloacetic acids (HAAs) levels in water supply and its correlated HAAs formation

2018 2nd International Conference on Energy and Environmental Science

能源学;生态环境科学

Saengchut, P.^1 ; Karuchit, S.^1 ; Pentamwa, P.^2

School of Environmental Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima, Thailand^1

School of Environmental Health, Institute of Public Health, Suranaree University of Technology, Nakhon Ratchasima, Thailand^2

关键词: Correlation coefficient;    Haloacetic acids;    Mass detectors;    Multiple linear regression analysis;    Multiple linear regression equations;    Residual chlorines;    Water samples;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/164/1/012023/pdf
DOI  :  10.1088/1755-1315/164/1/012023

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Haloacetic acids (HAAs) are usually found as disinfecting by-products in water supply. This study aims to investigate the concentration of HAA5 levels and to predict the HAA5 formation by multiple linear regression equations. HAA5 in the university water supply and the vicinity were analyzed by the mass detector (GC-MS) method with the use of gas chromatography. It was found that HAAs in 8 of 19 water samples were higher than US.EPA standard of 60 μg/L. The concentration HAA5 were ranged from 60 to 300 μg/L. The residual chlorine in the water samples were found between 1.2 - 1.8 mg/L which was above the standard set of 0.2 - 1.0 mg/L. The HAA5, pH, DOC, Free Cl2 variables were used to predict the correlation formation by multiple linear regression analysis at the 0.05 level of significance. It should be noted that correlation coefficient among target variables was high at the 0.91 level of statistically significant.