摘要
采用荧光分光光度法对北方某城市给水管网中的铝含量及形态分布状况进行调查.结果表明,该市饮用水中的铝残留量较低,总铝平均含量为0.038 mg.L-1,最高为0.078 mg.L-1,低于我国新水质标准0.2 mg.L-1的规定;起主要毒性作用的无机单核铝及无机多核铝平均含量分别为0.011 mg.L-1和0.013 mg.L-1,为饮用水中铝的主要存在形态;而有机结合铝含量较低.相关性分析结果表明,饮用水中铝的含量及形态分布情况与对应管段的水质条件密切相关,含盐量越高,可溶性有机物含量越小,水中总铝浓度则越低,为给水管网铝含量控制提供重要理论依据.
The residual Al concentration and species distribution of a north Chinese city was surveyed using fluorimetry. Results showed that the highest total Al concentration was 0.078 mg·L^-1 and the mean concentration was 0.038 mg·L^-1 , lower than the latest portable water standard of 0.2 mg·L^-1, Inorganic mono-aluminum and inorganic poly-aluminum, the main toxicity-leading species, were also the major existence species with the mean concentration 0.011 mg·L^-1and 0.013 mg·L^-1 respectively. While organic combined aluminum concentration was quite low. Correlation analysis results showed that the Al concentration and species distribution in a certain pipe line was connected with the water quality. When the distribution system contained more salts and less soluble organic matter, the Al concentration would be controlled in a low level, which was important to guide the local operation.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2007年第11期2557-2561,共5页
Environmental Science
基金
国家自然科学基金项目(50238020)
美国铝业基金项目
关键词
铝形态
给水管网
荧光分光光度法
水质条件
aluminum species
water distribution system
fluorimetry
water quality
