Water Environmental Quality and Health Risk Assessment of Dongchang Lake
GUO Na
DONG Jie
LU Changjuan
ZHANG Ju
DENG Huanguang
ZHANG Mengyue
WANG Aijing
Abstract：A total of 21 water samples were collected uniformly around Dongchang Lake in April 2015.The concentrations of the nitrogen,phosphorus and arsenic were analyzed,and the preliminary health risk involved with the pollutants by drinking water was conducted by using the models of US EPA.The results showed that the total nitrogen and phosphorus in all water samples exceeded the type Ⅲ standard values of GB 3838-2002 National Environmental Quality for Surface Water,and the average concentrations were 2.70 mg/L and 0.15 mg/L respectively.The total arsenic concentrations were 0.13-0.82 μg/L with an average of 0.60 μg/L which were far lower than its corresponding type Ⅲ standard value of GB 3838-2002.The individual carcinogenic risk value caused by As through drinking water with an average of 3.99 × 106/a,in the tolerate level of 1.0 × 10-6/a～ 1.0 × 104/a recommended by USEPA.The health risk caused by non-carcinogens ammonium (NH[) and nitrate (NO3-) was at the rate of 10-11 ～10-10/a,which were much lower than that caused by the carcinogen As.Therefore,great attention should be paid both to the eutrophication caused by nitrogen and phosphorus and the health risk caused by carcinogen As.
Keywords：ArsenicNitrogenPhosphorusHealth risk assessmentDongchang Lake
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 53-57 )